| Maintenance Service Interval | Maintenance Procedure |
|---|---|
| Before each use or daily |
|
Introduction
This rotary-blade, walk-behind lawn mower is intended to be used by professional, hired operators. It is designed primarily for cutting grass on well-maintained lawns on residential or commercial properties. Using this product for purposes other than its intended use could prove dangerous to you and bystanders.
Read this information carefully to learn how to operate and maintain your product properly and to avoid injury and product damage. You are responsible for operating the product properly and safely.
Visit www.Toro.com for more information, including safety tips, training materials, accessory information, help finding a dealer, or to register your product.
Whenever you need service, genuine Toro parts, or additional information, contact an Authorized Service Dealer or Toro Customer Service and have the model and serial numbers of your product ready. Figure 1 identifies the location of the model and serial numbers on the product. Write the numbers in the space provided.
Important: With your mobile device, you can scan the QR code on the serial number decal (if equipped) to access warranty, parts, and other product information
This manual identifies potential hazards and has safety messages identified by the safety-alert symbol (Figure 2), which signals a hazard that may cause serious injury or death if you do not follow the recommended precautions.
This manual uses 2 words to highlight information. Important calls attention to special mechanical information and Note emphasizes general information worthy of special attention.
This product complies with all relevant European directives; for details, please see the separate product specific Declaration of Conformity (DOC) sheet.
Gross or Net Torque: The gross or net torque of this engine was laboratory rated by the engine manufacturer in accordance with the Society of Automotive Engineers (SAE) J1940 or J2723. As configured to meet safety, emission, and operating requirements, the actual engine torque on this class of mower will be significantly lower. Please refer to the engine manufacturer’s information included with the machine.
Do not tamper with or disable safety devices on the machine, and check their proper operation regularly. Do not attempt to adjust or tamper with the engine speed control; doing so may create an unsafe operating condition, resulting in personal injury.
Safety
This machine has been designed in accordance with EN ISO 5395.
General Safety
This product is capable of amputating hands and feet and of throwing objects. Always follow all safety instructions to avoid serious personal injury or death.
-
Read, understand, and follow the instructions and warnings in this Operator’s Manual and on the machine and attachments before starting the engine.
-
Do not put your hands or feet near moving parts or under the machine. Keep clear of any discharge opening.
-
Do not operate the machine without all guards and other safety protective devices in place and functioning properly on the machine.
-
Keep bystanders and children out of the operating area. Do not allow children to operate the machine. Allow only people who are responsible, trained, familiar with the instructions, and physically capable to operate the machine.
-
Stop the machine, shut off the engine, and wait for all moving parts to stop before servicing, fueling, or unclogging the machine.
Improperly using or maintaining this machine can result in injury.
To reduce the potential for injury, comply with these safety instructions
and always pay attention to the safety-alert symbol 
, which means Caution, Warning,
or Danger—personal safety instruction. Failure to comply with
these instructions may result in personal injury or death.
Safety and Instructional Decals
 |
Safety decals and instructions are easily visible to the operator and are located near any area of potential danger. Replace any decal that is damaged or missing. |
Setup
Important: Remove and discard the protective plastic sheet that covers the engine and any other plastic or wrapping on the machine.
Installing the Handle
Warning
Folding or unfolding the handle improperly can damage the cables, causing an unsafe operating condition.
-
Do not damage the cables when folding or unfolding the handle.
-
If a cable is damaged, contact an Authorized Service Dealer.
Adding Oil to the Engine
Important: Your machine does not come with oil in the engine. Before starting the engine, add oil to the engine.
Assembling the Grass Bag
Product Overview
| Model | Weight | Length | Width | Height |
| 22207 | 85 kg | 169 cm | 81 cm | 97 cm |
| (187 lb) | (66-1/2 inches) | (32 inches) | (38-1/2 inches) |
Attachments/Accessories
A selection of Toro approved attachments and accessories is available for use with the machine to enhance and expand its capabilities. Contact your Authorized Service Dealer or authorized Toro distributor or go to www.Toro.com for a list of all approved attachments and accessories.
To ensure optimum performance and continued safety certification of the machine, use only genuine Toro replacement parts and accessories. Replacement parts and accessories made by other manufacturers could be dangerous, and such use could void the product warranty.
Operation
Note: Determine the left and right sides of the machine from the normal operating position.
Before Operation
Before Operation Safety
General Safety
-
Always shut off the machine, wait for all moving parts to stop, and allow the machine to cool before adjusting, servicing, cleaning, or storing it.
-
Become familiar with the safe operation of the equipment, operator controls, and safety signs.
-
Check that all guards and safety devices, such as deflectors and/or grass catcher, are in place and functioning properly.
-
Always inspect the machine to ensure that the blades and blade bolts are not worn or damaged.
-
Inspect the area where you will use the machine, and remove all objects that could interfere with the operation of the machine or that the machine could throw.
-
Contact with the moving blade will cause serious injury. Do not put your fingers under the housing.
Fuel Safety
-
Fuel is extremely flammable and highly explosive. A fire or explosion from fuel can burn you and others and can damage property.
-
To prevent a static charge from igniting the fuel, place the container and/or machine directly on the ground before filling, not in a vehicle or on an object.
-
Fill the fuel tank outdoors, in an open area, when the engine is cold. Wipe up any fuel that spills.
-
Do not handle fuel when smoking or around an open flame or sparks.
-
Do not remove the fuel cap or add fuel to the tank while the engine is running or hot.
-
If you spill fuel, do not attempt to start the engine. Avoid creating a source of ignition until the fuel vapors have dissipated.
-
Store fuel in an approved container and keep it out of the reach of children.
-
-
Fuel is harmful or fatal if swallowed. Long-term exposure to vapors can cause serious injury and illness.
-
Avoid prolonged breathing of vapors.
-
Keep your hands and face away from the nozzle and the fuel-tank opening.
-
Keep fuel away from your eyes and skin.
-
Filling the Fuel Tank
| Type | Unleaded gasoline |
| Minimum octane rating | 87 (US) or 91 (research octane; outside the US) |
| Ethanol | No more than 10% by volume |
| Methanol | None |
| MTBE (methyl tertiary butyl ether) | Less than 15% by volume |
| Oil | Do not add to the fuel |
Use only clean, fresh (no more than 30 days old), fuel from a reputable source.
Important: To reduce starting problems, add fuel stabilizer/conditioner to fresh fuel as directed by the fuel-stabilizer/conditioner manufacturer.
Fill the fuel tank as shown in Figure 10.
Note: The capacity of the fuel tank is 3.8 L (1 US gallon).
Checking the Engine-Oil Level
Important: If the oil level in the crankcase is too low or too high and you run the engine, you may damage the engine.
Adjusting the Handle Height
You can raise or lower the handle to 1 of 3 positions that is more comfortable for you (Figure 12).
-
Remove both handle bolts and corresponding nuts.
-
Move the handle to the desired height position.
-
Secure the handle with the previously removed bolts and corresponding nuts.
Adjusting the Cutting Height
Warning
Adjusting the cutting-height levers could bring your hands into contact with a moving blade and result in serious injury.
-
Shut off the engine and wait for all moving parts to stop before adjusting the cutting height.
-
Do not put your fingers under the housing when adjusting the cutting height.
The cutting height is controlled with a front lever and a rear lever, both on the left side of the machine. To raise or lower the machine, engage the lever, raise or lower the machine, and then disengage the lever.
Checking the Blade-Stop System Operation
Before each use, check that the blades stop within 3 seconds of releasing the control bar.
Using the Grass Bag
| Maintenance Service Interval | Maintenance Procedure |
|---|---|
| Before each use or daily |
|
You can use the grass bag to check the blade-stop system.
-
Remove the rear-discharge plug.
-
Install the empty grass bag on the machine.
-
Start the engine.
-
Engage the blades.
Note: The bag should begin to inflate, indicating that the blades are rotating.
-
While watching the bag, release the control bar.
Note: If the bag does not deflate within 3 seconds of releasing the control bar, the blade-stop system may be deteriorating and, if ignored, could result in an unsafe operating condition. Have the machine inspected and serviced by an Authorized Service Dealer.
-
Shut off the engine and wait for all moving parts to stop.
Not Using the Grass Bag
-
Move the machine onto a paved surface in a non-windy area.
-
Set all 4 wheels to the 3-1/2 inch (89 mm) cutting height setting.
-
Take a half sheet of newspaper and crumple it into a ball small enough to go under the machine (about 3 inches or 75 mm in diameter).
-
Place the newspaper ball about 5 inches (13 cm) in front of the machine.
-
Start the engine.
-
Engage the blades.
-
Release the control bar and begin counting out 3 seconds.
-
On the count of 3, push the machine quickly forward over the newspaper.
-
Shut off the engine and wait for all moving parts to stop.
-
Go to the front of the machine and check the newspaper ball.
Note: If the newspaper ball did not go under the machine, repeat steps 4 through 10.
Important: If the newspaper is unravelled or shredded, the blades did not stop properly, which could result in an unsafe operating condition. Contact an Authorized Service Dealer.
During Operation
During Operation Safety
General Safety
-
Wear appropriate clothing, including eye protection; long pants; substantial, slip-resistant footwear; and hearing protection. Tie back long hair and do not wear loose clothing or loose jewelry.
-
Use your full attention while operating the machine. Do not engage in any activity that causes distractions; otherwise, injury or property damage may occur.
-
Do not operate the machine while ill, tired, or under the influence of alcohol or drugs.
-
The blade is sharp; contacting the blade can result in serious personal injury. Shut off the engine, remove the ignition key (if equipped), and wait for all moving parts to stop before leaving the operating position.
-
Keep bystanders out of the operating area. Keep small children out of the operating area and under the watchful care of a responsible adult who is not operating the machine. Stop the machine if anyone enters the area.
-
Always look down and behind you before moving the machine in reverse.
-
Operate the machine only in good visibility and appropriate weather conditions. Do not operate the machine when there is the risk of lightning.
-
Wet grass or leaves can cause serious injury if you slip and contact the blade. Avoid mowing in wet conditions.
-
Use extreme care when approaching blind corners, shrubs, trees, or other objects that may block your view.
-
Do not direct the discharge material toward anyone. Avoid discharging material against a wall or obstruction; material may ricochet toward you. Stop the blade(s) when crossing gravel surfaces.
-
Watch for holes, ruts, bumps, rocks, or other hidden objects. Uneven terrain could cause you to lose your balance or footing.
-
If the machine strikes an object or starts to vibrate, immediately shut off the engine, remove the ignition key (if equipped), wait for all moving parts to stop, and disconnect the wire from the spark plug before examining the machine for damage. Make all necessary repairs before resuming operation.
-
Before leaving the operating position, shut off the engine, remove the ignition key (if equipped), and wait for all moving parts to stop.
-
If the engine has been running, it will be hot and can severely burn you. Keep away from the hot engine.
-
Operate the engine only in well-ventilated areas. Exhaust gases contain carbon monoxide, which is an odorless, deadly poison.
-
Check the grass catcher components and the discharge chute frequently for any wear or deterioration and replace them with genuine Toro parts when necessary.
Slope Safety
-
Mow across the face of slopes; never up and down. Use extreme caution when changing direction on slopes.
-
Do not mow on excessively steep slopes. Poor footing could cause a slip-and-fall accident.
-
Mow with caution near drop-offs, ditches, or embankments.
Starting the Engine
-
Connect the wire to the spark plug (Figure 6).
-
Open the fuel-shutoff valve (Figure 14).
Note: When the fuel-shutoff valve is open, the lever is parallel with the fuel line.
-
Move the throttle control to the CHOKE position (A of Figure 15).
-
Pull the starter handle lightly until you feel resistance, then pull it sharply (B of Figure 15).
-
Move the throttle control lever to the FAST position when the engine starts (C of Figure 15).
Note: If the engine fails to start after 3 pulls, repeat steps 3 through 5.
Operating the Self-Propel Drive and Engaging the Blades
To operate the self-propel drive, pull and hold the drive bail to the handle (Figure 16).
To engage the blades, do the following:
-
Push and hold the blade-control lock lever forward to release the blade-control bar (A of Figure 17).
-
Pull the blade-control bar to the handle and release the blade-control-lock lever; the blade should engage (A of Figure 17).
-
Release the blade-control bar to disengage the blade (B of Figure 17). The blade-control-lock lever resets to lock the blade-control bar.
Shutting Off the Engine
-
Move the throttle control to the OFF position and wait for all moving parts to stop.
-
Close the fuel-shutoff valve and disconnect the wire from the spark plug if you do not use the machine or leave it unattended.
Engaging the Parking Brake
Engage the parking brake by pulling the brake lever up toward the handle (Figure 18).
Disengaging the Parking Brake
Disengage the parking brake by pushing the brake lever down away from the handle (Figure 19).
Recycling the Clippings
This machine comes from the factory ready to recycle grass and leaf clippings back into the lawn. To prepare the machine to recycle:
-
If the side-discharge chute is on the machine, remove it and install the side-discharge deflector; refer to Removing the Side-Discharge Chute.
-
If the grass bag is on the machine, remove it; refer to Removing the Grass Bag.
-
If the rear-discharge plug is not installed, grip it by the handle, raise the rear deflector, and insert it into the rear-discharge chute until the latch locks into place; refer to Figure 20.
Bagging the Clippings
Use the grass bag when you want to collect grass and leaf clippings from the lawn.
If the side-discharge chute is on the machine, remove it and install the side-discharge deflector before bagging the clippings; refer to Removing the Side-Discharge Chute.
Installing the Grass Bag
-
Raise and hold up the rear deflector (A of Figure 21).
-
Remove the rear-discharge plug by pulling down on the latch with your thumb and pulling the plug out from the machine (B of Figure 21).
-
Install the bag rod into the notches at the base of the handle, and rock the bag back and forth to ensure that the rod is seated at the bottom of both notches (C of Figure 21).
-
Lower the rear deflector until it rests on the grass bag.
Removing the Grass Bag
To remove the bag, reverse the steps in Installing the Grass Bag.
Side-Discharging the Clippings
Use the side discharge for cutting very tall grass.
Installing the Side-Discharge Chute
Important: Ensure that the rear-discharge plug is in place before you recycle the clippings.
-
Shut off the engine and wait for all moving parts to stop.
-
Remove the grass bag if it is installed on the machine; refer to Removing the Grass Bag.
-
Insert the rear-discharge plug (A of Figure 22).
-
Remove the side-discharge deflector by pulling up on the spring that holds the deflector in place and removing the deflector (B and C of Figure 22).
-
Install the side-discharge chute by pulling up on the spring, placing the chute over the opening, and lowering the spring over the tabs on top of the discharge chute (D and E of Figure 22).
Removing the Side-Discharge Chute
To remove the side-discharge chute, reverse the steps in Installing the Side-Discharge Chute.
Operating Tips
General Tips
-
Review the safety instructions and read this manual carefully before operating the machine.
-
Clear the area of sticks, stones, wire, branches, and other debris that the blades could hit and throw.
-
Keep everyone, especially children and pets, away from the area of operation.
-
Avoid striking trees, walls, curbs, or other solid objects. Never deliberately mow over any object.
-
If the machine strikes an object or starts to vibrate, immediately shut off the engine, disconnect the wire from the spark plug, and examine the machine for damage.
-
Maintain sharp blades throughout the cutting season. Periodically file down nicks on the blades.
-
Replace the blades when necessary with original Lawn-Boy replacement blades.
-
Mow only dry grass or leaves. Wet grass and leaves tend to clump on the yard and can cause the machine to plug or the engine to stall.
-
Clean the underside of the machine deck after each mowing. Refer to Cleaning under the Machine.
-
Keep the engine in good running condition.
-
Set the engine speed to the fastest position for the best cutting results.
-
Clean the air filter frequently. Mulching stirs up more clippings and dust which clogs the air filter and reduces engine performance.
Cutting Grass
-
Grass grows at different rates at different times of the year. In the summer heat, it is best to cut grass at the 51 mm (2 inch), 64 mm (2-1/2 inch), or 83 mm (3 inch) cutting-height settings. Cut only about a third of the grass blade at a time. Do not cut below the 51 mm (2 inch) setting unless the grass is sparse or it is late fall when grass growth begins to slow down.
-
When cutting grass over 15 cm (6 inches) tall, first mow at the highest cutting-height setting and walk slower; then mow again at a lower setting for the best lawn appearance. If the grass is too long and the leaves clump on top of the lawn, the machine may plug and cause the engine to stall.
-
Alternate the mowing direction. This helps disperse the clippings over the lawn for even fertilization.
If the finished lawn appearance is unsatisfactory, try 1 or more of the following:
-
Sharpen the blades.
-
Walk at a slower pace while mowing.
-
Raise the cutting height on your machine.
-
Cut the grass more frequently.
-
Overlap cutting swaths instead of cutting a full swath with each pass.
Cutting Leaves
-
After cutting the lawn, ensure that half of the lawn shows through the cut leaf cover. You may need to make more than a single pass over the leaves.
-
For light leaf coverage, set all the wheels at the same cutting-height setting.
-
Slow down your mowing speed if the machine does not cut the leaves finely enough.
After Operation
After Operation Safety
General Safety
-
Always shut off the machine, wait for all moving parts to stop, and allow the machine to cool before adjusting, servicing, cleaning, or storing it.
-
Clean grass and debris from the machine to help prevent fires. Clean up oil or fuel spills.
-
Never store the machine or fuel container where there is an open flame, spark, or pilot light, such as on a water heater or on other appliances.
Hauling Safety
-
Use care when loading or unloading the machine.
-
Secure the machine from rolling.
-
Close the fuel valve before loading the machine for hauling.
Cleaning under the Machine
For optimal cutting performance, keep the underside of the machine housing clean. You may either wash or scrape the clippings away from under the machine housing.
Washing under the Machine
| Maintenance Service Interval | Maintenance Procedure |
|---|---|
| After each use |
|
-
Position the machine on a flat concrete or asphalt surface near a garden hose.
-
Start the engine.
-
Hold the running garden hose at handle level and direct the water to flow on the ground just in front of the right rear wheel (Figure 23).
Note: The blades will draw in water and wash out clippings. Let the water run until you no longer see clippings being washed out from under the machine.
-
Shut off the engine and wait for all moving parts to stop.
-
Turn off the water.
-
Start the machine and let it run for a few minutes to dry out the moisture on the machine and its components.
Scraping under the Machine
If washing does not remove all debris from under the machine, scrape it clean.
-
Disconnect the wire from the spark plug.
-
Drain the fuel from the fuel tank; refer to Emptying the Fuel Tank and Cleaning the Filter.
-
Tip the machine onto its side, with the air filter up in the air, until the upper handle rests on the ground.
-
Remove the dirt and grass clippings with a hardwood scraper; avoid burrs and sharp edges.
-
Turn the machine upright.
-
Fill the fuel tank.
-
Connect the wire to the spark plug.
Cleaning the Wheels
| Maintenance Service Interval | Maintenance Procedure |
|---|---|
| Every 40 hours |
|
-
Remove the rear wheels and clean any debris from the wheel-gear area.
-
After cleaning, apply a small amount of anti-seize to the gears.
Note: If you are operating the machine in extreme conditions, cleaning the wheels more frequently than recommended will increase gear life.
Note: To prevent damage to the bearing seals, do not use a high-pressure water sprayer on the bearings.
Maintenance
Recommended Maintenance Schedule(s)
| Maintenance Service Interval | Maintenance Procedure |
|---|---|
| After the first 5 hours |
|
| After the first 8 hours |
|
| Before each use or daily |
|
| After each use |
|
| Every 25 hours |
|
| Every 40 hours |
|
| Every 50 hours |
|
| Every 100 hours |
|
| Every 200 hours |
|
| Every 250 hours |
|
| Every 300 hours |
|
| Yearly or before storage |
|
Important: Refer to your engine manual for additional maintenance procedures.
Maintenance Safety
-
Always shut off the machine, wait for all moving parts to stop, and allow the machine to cool before adjusting, servicing, cleaning, or storing it.
-
Disconnect the spark-plug wire from the spark plug before performing any maintenance procedure.
-
Wear gloves and eye protection when servicing the machine.
-
The blade is sharp; contacting the blade can result in serious personal injury. Wear gloves when servicing the blade. Do not repair or alter the blade(s).
-
Never tamper with safety devices. Check their proper operation regularly.
-
Tipping the machine may cause the fuel to leak. Fuel is flammable and explosive, and can cause personal injury. Run the engine dry or remove the fuel with a hand pump; never siphon the fuel.
-
To ensure optimum performance of the machine, use only genuine Toro replacement parts and accessories. Replacement parts and accessories made by other manufacturers could be dangerous, and such use could void the product warranty.
Servicing the Air Filter
| Maintenance Service Interval | Maintenance Procedure |
|---|---|
| Before each use or daily |
|
| Every 25 hours |
|
| Every 300 hours |
|
Important: Do not operate the engine without the air filter assembly; extreme engine damage will occur.
-
Shut off the engine and wait for all moving parts to stop.
-
Disconnect the wire from the spark plug.
-
Remove the cover and clean it thoroughly (Figure 25).
-
Remove the foam pre-filter from the paper filter (Figure 25), and replace the paper filter if it is excessively dirty.
Important: Do not try to clean a paper filter.
-
Wash the foam pre-cleaner with a mild detergent and water, then blot it dry.
Note: Do not add oil to the foam pre-cleaner.
-
Install the foam pre-cleaner onto the paper filter.
-
Install the air-filter assembly.
-
Install the cover.
Changing the Engine Oil
| Maintenance Service Interval | Maintenance Procedure |
|---|---|
| After the first 8 hours |
|
| Every 50 hours |
|
| Every 100 hours |
|
Note: Run the engine a few minutes before changing the oil to warm it. Warm oil flows better and carries more contaminants.
| Engine oil capacity | 0.65 L (22 fl oz)* without oil filter; 0.85 L (29 fl oz)* with oil filter |
| Oil viscosity | SAE 30 or SAE 10W-30 detergent oil |
| API service classification | SJ or higher |
*There is residual oil in the crankcase after you drain the oil. Do not pour the entire capacity of oil into the crankcase. Fill the crankcase with oil as directed in the following steps.
-
Move the machine to a level surface.
-
Refer to Maintenance Safety.
-
Remove the dipstick by rotating the cap counterclockwise and pulling it out (Figure 26).
-
Tip the machine onto its side (so that the air filter is up) to drain the used oil from the oil-fill tube (Figure 27).
-
After draining the used oil, return the machine to the operating position.
-
Carefully pour about 3/4 of the engine capacity of oil into the oil-fill tube.
-
Wait 3 minutes for the oil to settle in the engine.
-
Wipe the dipstick clean with a clean cloth.
-
Insert the dipstick into the oil-fill tube, then remove the dipstick.
-
Read the oil level on the dipstick (Figure 26).
-
If the oil level on the dipstick is too low, carefully pour a small amount of oil into the oil-fill tube, wait 3 minutes, and repeat steps 8 through 10 until the oil level on the dipstick is correct.
-
If the oil level on the dipstick is too high, drain the excess oil until the oil level on the dipstick is correct.
Important: If the oil level in the engine is too low or too high and you run the engine, you may damage the engine.
-
-
Install the dipstick securely.
-
Recycle the used oil properly.
Changing the Oil Filter
| Maintenance Service Interval | Maintenance Procedure |
|---|---|
| Every 200 hours |
|
-
Run the engine to warm the oil.
-
Shut off the engine and wait for all moving parts to stop.
-
Disconnect the wire from the spark plug.
-
Drain the engine oil; refer to Changing the Engine Oil.
-
Place a rag under the oil filter to catch any oil that may leak out as you remove the filter.
-
Remove the oil filter (Figure 28).
Note: Make sure that the oil-filter gasket comes off with the filter.
-
Use your finger to coat the gasket on the new filter with oil (Figure 29).
-
Install the new filter until the gasket contacts the filter base, then hand tighten the filter an additional 2/3 turn.
-
Fill the crankcase to the correct level on the dipstick with fresh oil; refer to Checking the Engine-Oil Level.
-
Connect the wire to the spark plug.
-
Run the engine for about 3 minutes.
-
Shut off the engine, wait for all moving parts to stop, and check for oil leakage around the filter.
-
Add oil to compensate for the oil in the oil filter; refer to Adding Oil to the Engine
-
Recycle the used oil filter according to local codes.
Servicing the Spark Plug
| Maintenance Service Interval | Maintenance Procedure |
|---|---|
| Every 100 hours |
|
Use an NGK BPR5ES spark plug or equivalent.
-
Shut off the engine and wait for all moving parts to stop.
-
Disconnect the wire from the spark plug.
-
Clean around the spark plug.
-
Remove the spark plug from the cylinder head.
Important: Replace a cracked, fouled, or dirty spark plug. Do not clean the electrodes because grit entering the cylinder can damage the engine.
-
Set the gap on the plug to 0.76 mm (0.030 inch); refer to Figure 30.
-
Install the spark plug and the gasket seal.
-
Torque the plug to 22 N∙m (16 ft-lb).
-
Connect the wire to the spark plug.
Checking the Condition of the Belts
| Maintenance Service Interval | Maintenance Procedure |
|---|---|
| Every 50 hours |
|
-
Shut off the engine and wait for all moving parts to stop.
-
Remove the belt cover (Figure 6) by removing the 4 bolts that hold it to the machine housing.
-
Check the belts for any cracks, frayed edges, burn marks, or any other damage.
-
Replace all damaged belts.
-
If you replace the blade-drive belt, you must adjust it. Refer to Servicing the Blade-Drive System.
-
Install the belt cover with the 4 bolts that you removed in step 2.
Emptying the Fuel Tank and Cleaning the Filter
| Maintenance Service Interval | Maintenance Procedure |
|---|---|
| Every 50 hours |
|
| Every 100 hours |
|
| Yearly or before storage |
|
Note: The fuel-tank filter (screen) element is located inside the fuel tank at the outlet. This filter is a part of the fuel tank and cannot be removed.
-
Shut off the engine and wait for it to cool down.
Important: Drain fuel from a cold engine only.
-
Disconnect the wire from the spark plug.
-
Close the fuel-shutoff valve.
-
Disconnect the fuel line by loosening the tube clamp at the carburetor.
-
Open the fuel-shutoff valve and drain the fuel completely from the tank and fuel line into an approved fuel container.
-
Remove the fuel tank from the machine.
-
Pour a small amount of fuel in the fuel tank, move the fuel around in the tank, and pour it out into an approved fuel container.
-
Install the fuel tank and the fuel line.
Changing the Fuel Filter
| Maintenance Service Interval | Maintenance Procedure |
|---|---|
| Every 100 hours |
|
-
Shut off the engine and wait for all moving parts to stop.
-
Disconnect the wire from the spark plug.
-
Close the fuel-shutoff valve (Figure 31).
-
Remove the fuel filter (Figure 31) from the fuel line by loosening the tube clamps surrounding the fuel filter.
-
Install a new fuel filter in the fuel line using the tube clamps that you removed in step 4.
Servicing the Blade-Drive System
| Maintenance Service Interval | Maintenance Procedure |
|---|---|
| After the first 5 hours |
|
| Every 50 hours |
|
-
Loosen the 2 quarter-turn fasteners on the belt-cover-access panel and remove the panel (Figure 32).
-
Brush or blow out debris from the inside of the belt cover and around all the parts.
-
Hold a feeler gauge set between 0.13 and 0.76 mm (0.005 and 0.03 inches) against the wall and slide it down behind the belt tension spring; refer to Figure 33.
Note: If there is a visible gap between the gauge and the spring, tighten the adjusting bolt and the nut until the feeler gauge barely slides freely in and out of the gap (Figure 32).
Important: Do not overtighten the adjusting bolt. This could damage the blade-drive belt.
-
Install the belt-cover-access panel.
Servicing the Blades
| Maintenance Service Interval | Maintenance Procedure |
|---|---|
| Before each use or daily |
|
Important: You will need a torque wrench to install the blades properly. If you do not have a torque wrench or are uncomfortable performing this procedure, contact an Authorized Service Dealer.
Examine the blades for sharpness and any wear or damage whenever you run out of fuel; refer to Inspecting the Blades. If the blade edge is dull or nicked, have it sharpened or replace it. If the blades are worn, bent, damaged or cracked, replace them immediately with genuine Lawn-Boy replacement blades.
Danger
A worn or damaged blade can break, and a piece of the blade could be thrown toward you or bystanders, resulting in serious personal injury or death.
-
Inspect the blades periodically for wear or damage.
-
Replace worn or damaged blades.
Note: Maintain sharp blades throughout the cutting season, because sharp blades cut cleanly without tearing or shredding the grass blades. Tearing and shredding turns grass brown at the edges, which slows growth and increases the chance of disease.
Preparing to Service the Cutting Blades
Tip the machine onto its side, with the air filter up in the air, until the upper handle rests on the ground.
Warning
The blades are sharp; contacting a blade could result in serious personal injury.
-
Disconnect the wire from the spark plug.
-
Wear gloves when servicing the blades.
Inspecting the Blades
| Maintenance Service Interval | Maintenance Procedure |
|---|---|
| Before each use or daily |
|
-
Inspect the cutting edges (Figure 34). If the edges are not sharp or have nicks, remove the blades and have them sharpened or replace them.
-
Inspect the blades themselves, especially the curved area (Figure 34). If you notice any damage, wear, or a slot forming in this area, immediately replace them with new blades.
Danger
If you allow a blade to wear, a slot will form between the sail and flat part of the blade. Eventually a piece of the blade may break off and be thrown from under the housing, possibly resulting in serious injury to you or bystanders.
-
Inspect the blades periodically for wear or damage.
-
Never try to straighten a blade that is bent or weld a broken or cracked blade.
-
Check for bent blades; refer to Checking for Bent Blades.
-
Checking for Bent Blades
-
Rotate the blades until they are positioned as shown in Figure 35.
-
Measure from a level surface to the cutting edges at locations A and B, (Figure 35), and record both dimensions.
-
Rotate the blades so that their opposite ends are at locations A and B.
-
Repeat the measurements in step 2 and record them.
Note: If the difference between dimensions A and B obtained in steps 2 and 4 exceeds 1/8 inch, replace the blades; refer to Removing the Blades.
Warning
A blade that is bent or damaged could break apart and could seriously injure or kill you or bystanders.
-
Always replace a bent or damaged blade with a new blade.
-
Never file or create sharp notches in the edges or surfaces of a blade.
-
Removing the Blades
Replace the blades when they strike a solid object, are out of balance, bent, or worn. Use only genuine Toro replacement blades.
Installing the Blades
Warning
Incorrectly installing the blades could damage the machine or cause an injury to you or bystanders.
Install the blades according to the instructions.
-
Install the first blade so that it is horizontal, along with all mounting hardware as shown in Figure 37.
Note: Tighten the bolt with your fingers.
Important: Position the curved ends of the blades to point toward the machine housing. Be sure to nest the raised areas on each blade driver with the recesses in the head of its corresponding spindle, and the pins on the other side of each blade driver with the holes in its corresponding blade.
-
Steady each blade with a board and turn the blade bolt clockwise with a torque wrench as shown in Figure 38; torque each blade bolt to 82 N∙m (60 ft-lb).
-
Rotate the installed blade 1/4 turn until it is vertical, and install the other blade in the same manner as the first (refer to step 1).
Note: The blades should be perpendicular, forming an inverted “T” as shown in Figure 39.
-
Tighten the second blade; refer to step 2.
-
Rotate the blades by hand a full 360° turn to ensure that they do not touch.
Note: If the blades touch each other, they are not mounted correctly. Repeat steps 1 through 3 until the blades no longer touch each other.
Changing the Blade-Drive Belt
Change the blade-drive belt as needed.
-
Shut off the engine and wait for all moving parts to stop.
-
Disconnect the wire from the spark plug.
-
Remove the belt cover (Figure 6) by removing the 4 bolts that hold it to the machine housing.
Note: Save the bolts for installing the belt cover to the machine housing.
-
Remove any debris from under the belt cover.
-
Remove the BBC belt guard and the mounting hardware.
Note: Save the BBC belt guard and hardware for installation later.
-
Remove the BBC belt from the front, left pulley.
-
Loosen the adjusting bolt (Figure 32).
-
Remove the fixed idler pulley and the hardware (Figure 41).
Note: Save the idler pulley and hardware for installation later.
-
Remove the blade-drive belt.
-
Align the holes in the right and left sprockets with the holes in the housing as shown in Figure 41.
Note: Hold the sprockets in place with a rod or a screwdriver.
-
When you have locked the sprockets in place, install the blade-drive belt and the fixed idler pulley.
Note: Ensure that the teeth are engaged in the sprockets.
-
Tighten the belt tension to the recommended settings; refer to Servicing the Blade-Drive System.
-
Remove the rod or screwdriver from the sprockets.
-
Ensure that the blades under the housing are properly aligned; refer to Inspecting the Blades.
-
Install the BBC belt and the BBC belt guard and hardware.
-
Install the belt cover using the 4 bolts that you removed in step 3.
-
Connect the wire to the spark plug.
-
Check the operation of the control bar and the blade-brake clutch.
Changing the Blade-Brake-Clutch (BBC) Belt
| Maintenance Service Interval | Maintenance Procedure |
|---|---|
| Every 250 hours |
|
-
Shut off the engine and wait for all moving parts to stop.
-
Disconnect the wire from the spark plug.
-
Remove the 4 bolts that hold the belt cover to the machine housing.
Note: Save the bolts for installing the belt cover to the machine housing.
-
Remove the belt cover.
-
Remove any debris from under the belt cover.
-
Remove the transmission belt; refer to Removing the Transmission Belt.
-
Remove the BBC belt guard (Figure 42).
Note: Save the mounting hardware for installing the BBC belt guard later.
-
Remove the BBC belt from the brake-drum pulley and then remove the belt from the machine.
Note: Hold one of the blades using a glove or a rag and turn the blade spindle to help remove the BBC belt.
-
To install a new BBC belt, reverse the steps above.
-
Adjust the BBC cable; refer to Adjusting the Blade-Brake Cable.
Adjusting the Blade-Brake Cable
Adjust the blade-brake cable whenever you install a new cable or replace the BBC belt.
-
Shut off the engine and wait for all moving parts to stop.
-
Disconnect the wire from the spark plug.
-
Remove the belt cover (Figure 6) by removing the 4 bolts that hold it to the machine housing.
Note: Save the bolts for installing the belt cover to the machine housing.
-
Remove any debris from under the belt cover.
-
Loosen the cable-clamp screw (Figure 43).
-
Pull the cable jacket to remove slack (Figure 44).
Note: Do not put tension on the spring.
-
Mark the brake cable (Figure 45), then adjust the jacket until there is approximately 11 mm (7/16 inch) of slack (Figure 46).
-
Torque the cable-clamp screw to 11 to 14 N∙m (99 to 121 in-lb) to lock the adjustment in place.
-
Install the belt cover with the 4 bolts that you removed in step 3.
-
Connect the wire to the spark plug.
-
Check the operation of the blade-brake clutch.
Changing the Transmission Belt
| Maintenance Service Interval | Maintenance Procedure |
|---|---|
| Every 250 hours |
|
Removing the Transmission Belt
Note: Retain all hardware removed in this procedure, except the old transmission belt, for installation in Installing the Transmission Belt.
-
Shut off the engine and wait for all moving parts to stop.
-
Disconnect the wire from the spark plug.
-
Remove the 4 bolts that hold the belt cover to the machine housing.
-
Remove the belt cover.
-
Remove any debris from under the belt cover.
-
If the grass bag is on the machine, remove it. Refer to Removing the Grass Bag.
-
Raise and hold up the rear deflector.
-
Remove the rear-viewing window, located under the rear-discharge deflector, by removing the bolt holding it in place (Figure 47).
-
Remove the trailing shield by removing the 2 bolts holding it in place (Figure 48).
-
Rotate the idler pulley over the access hole on the transmission by using a socket wrench to turn the idler-pulley nut clockwise.
-
While you are holding the idler pulley over the access hole on the transmission, insert a screwdriver through the access hole to catch a rib on the idler pulley.
-
Use the screwdriver to hold the idler pulley out of the way until you are done installing the new transmission belt.
-
From the front of the machine, remove the belt from the engine pulley and then remove from the transmission pulley.
Installing the Transmission Belt
-
While the idler pulley is pulled out of the way, install the new transmission belt placing the belt over the transmission pulley first and then over the engine pulley.
-
Remove the screwdriver from the access hole in the transmission to return the idler pulley to its tensioned position.
-
Use the rear-viewing window, located under the rear-discharge deflector, to ensure that the new transmission belt is positioned correctly.
-
Install the trailing shield using the 2 trailing-shield bolts removed in Step 9 of Removing the Transmission Belt.
-
Install the rear-viewing window, located under the rear-discharge deflector, using the corresponding bolt removed in 8 ofRemoving the Transmission Belt.
Adjusting the Parking-Brake Cable
| Maintenance Service Interval | Maintenance Procedure |
|---|---|
| Before each use or daily |
|
Whenever you install a new parking-brake cable or if the parking brake is out of adjustment, adjust the parking-brake cable.
-
Disengage the parking brake; refer to Disengaging the Parking Brake.
-
Turn the adjustment nut counterclockwise to loosen the cable adjustment (Figure 51).
-
Adjust the tension on the cable (Figure 51) by pulling or pushing the cable jacket and holding that position.
Note: Pull the cable jacket toward the engine to increase tension (also increases brake clamp load); push the cable jacket away from the engine to decrease tension (also decreases brake clamp load).
Important: Adjust the cable jacket in small increments to avoid over tensioning. Over tensioning may cause the machine to not roll free even when the parking brake is disengaged. Correct tensioning allows the machine to roll free when the parking brake is disengaged and to hold position when the parking brake is engaged.
-
Turn the adjustment nut clockwise to tighten the cable adjustment.
Note: Tighten the nut firmly with a socket or wrench.
Adjusting the Self-Propel Drive
For Self-Propel-Drive Models Only
Whenever you install a new self-propel cable or if the self-propel drive is out of adjustment, adjust the self-propel drive.
-
Turn the adjustment nut counterclockwise to loosen the cable adjustment (Figure 52).
-
Adjust the tension on the cable (Figure 52) by pulling it forward or pushing it back and holding that position.
Note: Pull the cable toward the engine to increase the traction; push the cable away from the engine to decrease the traction.
Note: Adjust the cable in small increments to avoid over adjusting it.
-
Turn the adjustment nut clockwise to tighten the cable adjustment.
Note: Tighten the nut firmly with a socket or wrench.
Storage
Storage Safety
Always shut off the machine, wait for all moving parts to stop, and allow the machine to cool before adjusting, servicing, cleaning, or storing it.
General Information
Store the machine in a cool, clean, dry place. Cover the machine to keep it clean and protected.
-
Perform the recommended annual maintenance procedures; refer to .
-
Clean under the machine; refer to Cleaning under the Machine.
-
Remove chaff, dirt, and grime from the external parts of the engine, the shrouding, and the top of the machine.
-
Check the condition of the blades; refer to Inspecting the Blades.
-
Service the air filter; refer to Servicing the Air Filter.
-
Tighten all nuts, bolts, and screws.
-
Touch up all rusted or chipped paint surfaces with paint available from an Authorized Service Dealer.
Preparing the Fuel System
On the last refueling of the year, add fuel stabilizer to the fuel as directed by the engine manufacturer. Empty the fuel tank when mowing the last time before storing the machine.
-
Run the machine until the engine shuts off from running out of fuel.
-
Start the engine again.
-
Allow the engine to run until it shuts off. When you can no longer start the engine, it is sufficiently dry.
Preparing the Engine
-
While the engine is still warm, change the engine oil and the oil filter; refer to Changing the Engine Oil and Changing the Oil Filter.
-
Remove the spark plug.
-
Using an oil can, add about 30 ml (1 fl oz), of motor oil to the engine through the spark-plug hole.
-
Slowly pull the starter rope several times to distribute oil throughout the cylinder.
-
Install the spark plug but do not connect the wire to the spark plug. Secure the wire so that it does not come into contact with the spark plug.
Removing the Machine from Storage
-
Check and tighten all fasteners.
-
Remove the spark plug and spin the engine rapidly using the starter to blow excess oil from the cylinder.
-
Inspect the spark plug and replace it if it is dirty, worn, or cracked; refer to the engine owner’s manual.
-
Install the spark plug and tighten it to the recommended torque of 20 N∙m (180 in-lb).
-
Perform any needed maintenance procedures; refer to .
-
Check the engine-oil level; refer to Checking the Engine-Oil Level.
-
Fill the fuel tank with fresh fuel; refer to Filling the Fuel Tank.
-
Connect the wire to the spark plug.
Troubleshooting
| Problem | Possible Cause | Corrective Action |
|---|---|---|
| The engine does not start. |
|
|
| The engine starts hard or loses power. |
|
|
| The engine runs rough. |
|
|
| The machine or engine vibrates excessively. |
|
|
| There is an uneven cutting pattern. |
|
|
| The discharge chute gets plugged up. |
|
|
| The machine does not self-propel. |
|
|
| The blades do not rotate or they slip. |
|
|
| The blades contact each other. |
|
|