Titan® X4850, X5450, XS4850, and XS5450 Riding Mower

• For best results, use only clean, fresh (less than 30 days old), unleaded gasoline with an octane rating of 87 or higher ((R+M)/2 rating method).

• Ethanol: Gasoline with up to 10% ethanol (gasohol) or 15% MTBE (methyl tertiary butyl ether) by volume is acceptable. Ethanol and MTBE are not the same. Gasoline with 15% ethanol (E15) by volume is not approved for use. Never use gasoline that contains more than 10% ethanol by volume, such as E15 (contains 15% ethanol), E20 (contains 20% ethanol), or E85 (contains up to 85% ethanol). Using unapproved gasoline may cause performance problems and/or engine damage which may not be covered under warranty.

• Do not use gasoline containing methanol.

• Do not store fuel either in the fuel tank or fuel containers over the winter unless you use a fuel stabilizer.

• Do not add oil to gasoline.

Use fuel stabilizer/conditioner in the machine to keep the fuel fresh longer when used as directed by the fuel-stabilizer manufacturer.

Important: Do not use fuel additives containing methanol or ethanol.

Add the amount of fuel stabilizer/conditioner to fresh fuel as directed by the fuel-stabilizer manufacturer.

1. Park the machine on a level surface.

2. Engage the parking brake.

3. Shut off the engine and remove the key.

4. Clean around the fuel-tank cap.

5. Fill the fuel tank until the fuel gauge reads at the full mark (Figure 8).

   Note: Do not fill the fuel tank completely full. The empty space in the tank allows the fuel to expand.

   

   Figure 8

The safety-interlock system is designed to prevent the engine from starting unless:

• The blade-control switch (PTO) is disengaged.

• The motion-control levers are in the NEUTRAL-LOCK position.

• The parking brake is engaged.

The safety-interlock system also is designed to shut off the engine whenever the control levers are out of the NEUTRAL-LOCK position and you rise from the seat.

Test the safety-interlock system before you use the machine each time. If the safety system does not operate as described below, have an Authorized Service Dealer repair the safety system immediately.

1. Sit on the seat, engage the parking brake, and move the blade-control switch (PTO) to the ON position. Try starting the engine; the engine should not crank.

2. Sit on the seat, engage the parking brake, and move the blade-control switch (PTO) to the OFF position. Move either motion-control lever (out of the NEUTRAL-LOCK position). Try starting the engine; the engine should not crank. Repeat for other control lever.

3. Sit on the seat, engage the parking brake, move the blade-control switch (PTO) to the OFF position, and move the motion-control levers to the NEUTRAL-LOCK position. Start the engine. While the engine is running, release the parking brake, engage the blade-control switch (PTO), and rise slightly from the seat; the engine should shut off.

4. Sit on the seat, engage the parking brake, move the blade-control switch (PTO) to the OFF position, and move the motion-control levers to NEUTRAL-LOCK position. Start the engine. While the engine is running, center either motion-control lever and move it forward or reverse; the engine should shut off. Repeat for other motion-control lever.

5. Sit on the seat, disengage the parking brake, move the blade-control switch (PTO) to the OFF position, and move the motion-control levers to NEUTRAL-LOCK position. Try starting the engine; the engine should not crank.

1. Park the machine on a level surface, disengage the blade-control switch, and engage the parking brake.

2. Shut off the engine, remove the key, and wait for all moving parts to stop before leaving the operating position.

3. Remove the mower deck; refer to Removing the Mower Deck.

4. Remove the 2 locknuts (5/16 inch) secured to the welded posts of the left baffle on the top of the mower deck at the center and left of center positions (Figure 12).

   

   Figure 12

   1. Locknut (5/16 inch)
   2. Carriage bolt (5/16 x 3/4 inch)
   3. Left baffle
   4. Install the fasteners here.

5. Remove the carriage bolt and locknut on the side wall of the mower deck securing the left baffle to the deck.

6. Remove the left baffle from the mower deck as shown in Figure 12.

7. Remove the 2 carriage bolts (5/16 x 3/4 inch) and 2 locknuts (5/16 inch) securing the assembled right baffle and baffle guard to the mower deck (Figure 13).

   

   Figure 13

   1. Carriage bolt (5/16 x 3/4 inch)
   2. Locknut (5/16 inch)
   3. Right baffle
   4. Baffle guard

8. Remove the 2 locknuts (5/16 inch) to securing the welded posts of the right baffle to the top of the mower deck at the center and right of center positions (Figure 14).

   Note: Remove the right baffle from the mower deck.

   

   Figure 14

   1. Locknut (5/16 inch)
   2. Right baffle
   3. Welded posts (right baffle)

9. Locate the cutoff baffle in the loose parts bag and remove the fasteners at the rear holes of the discharge plate (Figure 15).

   

   Figure 15

   1. Carriage bolts (existing)
   2. Rear holes in the discharge plate
   3. Cutoff baffle (loose)
   4. Locknuts (existing)

10. Install the baffle at the side discharge opening on the mower deck.

11. Use the fasteners removed to secure the cutoff baffle to the deck.

12. Install the mower deck; refer to Installing the Mower Deck.

1. Park the machine on a level surface, disengage the blade-control switch, and engage the parking brake.

2. Shut off the engine, remove the key, and wait for all moving parts to stop before leaving the operating position.

3. Remove the mower deck; refer to Removing the Mower Deck.

4. Remove the 3 locknuts (5/16 inch) secured to the welded posts of the left baffle on the top of the mower deck at the center, left of center, and left positions (Figure 16).

   

   Figure 16

   1. Locknut (5/16 inch)
   2. Carriage bolt (5/16 x 3/4 inch)
   3. Left baffle
   4. Install the fasteners here.

5. Remove the carriage bolt and locknut on the side wall of the mower deck securing the left baffle to the deck (Figure 16).

6. Remove the left baffle from the mower deck (Figure 16).

7. Locate the 2 bolts in loose parts and use the existing locknuts and install these fasteners into the holes shown in Figure 16 on the mower deck to prevent flying debris.

   Note: Install the bolt upward, through the underside of the deck and use an existing locknut to secure from the topside.

8. Remove the carriage bolt (5/16 x 3/4 inch) and locknut (5/16 inch) on the rear wall of the mower deck securing the baffle to the deck (Figure 17).

   

   Figure 17

   1. Locknuts—front of discharge plate (install after removing the baffle)
   2. Hex-head bolt—forward hole in deck (install after removing the baffle)
   3. Locknut—forward hole in deck (install after removing the baffle)
   4. Carriage bolts—front of discharge plate (install after removing the baffle)
   5. Baffle guard—54-inch decks
   6. Locknut (5/16 inch)
   7. Carriage bolt (5/16 x 3/4 inch)

9. Locate the baffle guard at the front edge of the side discharge opening (Figure 17).

10. Remove the fasteners securing the baffle guard and the right baffle to the mower deck (Figure 17).

    Note: Remove the baffle guard and retain all fasteners.

11. Remove the 2 locknuts (5/16 inch) securing the welded posts of the right baffle to the top of the mower deck at center and right of center positions (Figure 18).

    

    Figure 18

    1. Locknut (5/16 inch)
    2. Right baffle
    3. Welded posts (right baffle)

12. Remove the carriage bolt and locknut securing the right baffle to the top of the mower deck and remove the right baffle from the mower deck (Figure 18).

13. Install the fasteners removed previously at the front holes in the discharge plate and forward hole in the deck (Figure 17).

14. Locate the cutoff baffle in the loose parts bag, remove the fasteners at the rear holes of the discharge plate, and install the baffle at the side-discharge opening on the mower deck (Figure 19).

    

    Figure 19

    1. Carriage bolts
    2. Rear holes in the discharge plate
    3. Cutoff baffle
    4. Locknuts

15. Use the fasteners removed to secure the cutoff baffle to the deck.

16. Install the mower deck; refer to Installing the Mower Deck.

Park the machine on a level surface.

Figure 23

To disengage the parking brake, pull the lever out of the detent slot and toward you, then push it down (Figure 24).

Figure 24

1. Push the parking brake out of the detent slot and toward you.
2. Push the parking brake down.

Note: The engine shuts off when you move the traction-control with the parking brake engaged.

To stop the machine, pull the motion-control levers to the NEUTRAL position.

1. Disengage the parking brake; refer to Disengaging the Parking Brake.

2. Move the levers to the center, unlocked position.

3. To go forward, slowly push the motion-control levers forward (Figure 33).

   

   Figure 33

1. Move the levers to the center, unlocked position.

2. To go backward, slowly pull the motion-control levers rearward (Figure 34).

   

   Figure 34

For best mowing and maximum air circulation, operate the engine at the FAST position. Air is required to thoroughly cut grass clippings, so do not set the height-of-cut so low as to totally surround the mower deck in uncut grass. Always try to have 1 side of the mower deck free from uncut grass, which allows air to be drawn into the mower deck.

Cut grass slightly longer than normal to ensure that the cutting height of the mower deck does not scalp any uneven ground. However, the cutting height used in the past is generally the best one to use. When cutting grass longer than 15 cm (6 inches) tall, you may want to cut the lawn twice to ensure an acceptable quality of cut.

It is best to cut only about a third of the grass blade. Cutting more than that is not recommended unless grass is sparse, or it is late fall when grass grows more slowly.

Alternate the mowing direction to keep the grass standing straight. This also helps disperse clippings, which enhances decomposition and fertilization.

Grass grows at different rates at different times of the year. To maintain the same cutting height, mow more often in early spring. As the grass growth rate slows in mid summer, mow less frequently. If you cannot mow for an extended period, first mow at a high cutting height, then mow again 2 days later at a lower height setting.

To improve cut quality, use a slower ground speed in certain conditions.

When mowing uneven turf, raise the cutting height to avoid scalping the turf.

If you must stop the forward motion of the machine while mowing, a clump of grass clippings may drop onto your lawn. To avoid this, move onto a previously cut area with the blades engaged or you can disengage the mower deck while moving forward.

Clean clippings and dirt from the underside of the mower deck after each use. If grass and dirt build up inside the mower deck, cutting quality will eventually become unsatisfactory.

Maintain a sharp blade throughout the cutting season because a sharp blade cuts 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. Check the mower blades after each use for sharpness, and for any wear or damage. File down any nicks and sharpen the blades as necessary. If a blade is damaged or worn, replace it immediately with a genuine Toro replacement blade.

1. Park the machine on a level surface, disengage the blade-control switch, and engage the parking brake.

2. Shut off the engine, remove the key, and wait for all moving parts to stop before leaving the operating position.

3. Locate the bypass levers on the frame on both sides of the engine.

4. Move the bypass levers forward through the key hole and down to lock them in place (Figure 37).

   Note: Do this for each lever.

5. Disengage the parking brake.

   

   Figure 37

   1. Bypass-lever locations
   2. Lever position for operating the machine
   3. Lever position for pushing the machine

6. When finished, engage the parking brake.

Move the bypass levers rearward through the keyhole and down to lock them in place as shown in Figure 37.

Note: Do this for each lever.

1. If using a trailer, connect it to the towing vehicle and connect the safety chains.

2. If applicable, connect the trailer brakes and lights.

3. Lower the ramp, ensuring that the angle between the ramp and the ground does not exceed 15 degrees (Figure 38).

4. Back the machine up the ramp (Figure 39).

   

   Figure 39

   1. Back the machine up the ramp.
   2. Drive the machine forward down the ramp.

5. Shut off the engine, remove the key, and engage the parking brake.

6. Tie down the machine near the front caster wheels and the rear bumper with straps, chains, cable, or ropes (Figure 40). Refer to local regulations for tie-down requirements.

   

   Figure 40

   1. Tie-down loops

1. Lower the ramp, ensuring that the angle between the ramp and the ground does not exceed 15 degrees (Figure 38).

2. Drive the machine forward down the ramp (Figure 39).

1. Park the machine on a level surface, disengage the blade-control switch (PTO), and engage the parking brake.

2. Shut off the engine, remove the key, and wait for all moving parts to stop before leaving the operating position.

3. Clean around the air-cleaner cover to prevent dirt from getting into the engine and causing damage.

4. Lift the cover and rotate the air-cleaner assembly out of the engine (Figure 42).

   

   Figure 42

5. Separate the foam and paper elements (Figure 43).

   

   Figure 43

1. Wash the foam element in liquid soap and warm water. When the element is clean, rinse it thoroughly.

2. Dry the element by squeezing it in a clean cloth.

   Important: Replace the foam element if it is torn or worn.

1. Clean the paper element by tapping it gently to remove dust.

   Note: If it is very dirty, replace the paper element with a new one.

2. Inspect the element for tears, an oily film, or damage to the rubber seal.

3. Replace the paper element if it is damaged.

   Important: Do not clean the paper filter.

1. Install the foam element over the paper element.

   Note: Ensure that you do not damage the elements.

2. Align the holes of the filter into the manifold ports.

3. Rotate the filter down into the chamber and fully seat it against the manifold (Figure 44).

   

   Figure 44

4. Close the cover.

Oil Type: Detergent oil (API service SF, SG, SH, SJ, or SL)

Crankcase Capacity: 2.4 L (81 fl oz) with oil filter

Viscosity: See the table below.

Figure 45

Note: Check the oil when the engine is cold.

Important: If you overfill or underfill the engine crankcase with oil and run the engine, you may damage the engine.

1. Park the machine on a level surface, disengage the blade-control switch (PTO), and engage the parking brake.

2. Shut off the engine, remove the key, and wait for all moving parts to stop before leaving the operating position.

   Note: Ensure that the engine is cool so that the oil has had time to drain into the sump.

3. To keep dirt, grass clippings, etc., out of the engine, clean the area around the oil-fill cap and dipstick before removing it (Figure 46).

Figure 46

1. Park the machine on a level surface to ensure that the oil drains completely.

2. Disengage the blade-control switch (PTO) and engage the parking brake.

3. Shut off the engine, remove the key, and wait for all moving parts to stop before leaving the operating position.

4. Drain the oil from the engine.

   

   Figure 47

5. Change the engine-oil filter (Figure 48).

   Note: Ensure that the oil-filter gasket touches the engine and then turn the filter an extra 3/4 turn.

   

   Figure 48

6. Slowly pour approximately 80% of the specified oil into the filler tube and slowly add the additional oil to bring it to the Full mark (Figure 49).

   

   Figure 49

7. Dispose of the used oil at a recycling center.

1. Park the machine on a level surface, disengage the blade-control switch (PTO), and engage the parking brake.

2. Shut off the engine, remove the key, and wait for all moving parts to stop before leaving the operating position.

3. Clean the area around the base of the plug to keep dirt and debris out of the engine.

4. Remove the spark plug (Figure 50).

   

   Figure 50

Important: Do not clean the spark plug(s). Always replace the spark plug(s) when it has a black coating, worn electrodes, an oily film, or cracks.

If you see light brown or gray on the insulator, the engine is operating properly. A black coating on the insulator usually means the air cleaner is dirty.

Set the gap to 0.75 mm (0.03 inch).

Figure 51

1. Park the machine on a level surface, disengage the blade-control switch (PTO), and engage the parking brake.

2. Shut off the engine, remove the key, and wait for all moving parts to stop before leaving the operating position.

3. Loosen the 2 fasteners on the battery cover counterclockwise 1/4 turn, and remove the battery cover (Figure 55).

   

   Figure 55

   1. Battery cover
   2. Fasteners

4. Disconnect the negative (black) ground cable from the battery post (Figure 56).

   Note: Retain all fasteners.

5. Slide the rubber cover up the positive (red) cable.

6. Disconnect the positive (red) cable from the battery post (Figure 56).

   Note: Retain all fasteners.

7. Remove the battery hold-down (Figure 56), and lift the battery from the battery tray.

   

   Figure 56

   1. Battery
   2. Negative (–) battery post
   3. Bolt, washer, and nut for the negative (–) battery post
   4. Bolt, washer, and nut for the positive (+) battery post
   5. Positive (+) battery post
   6. Terminal boot
   7. Battery hold-down

1. Remove the battery from the chassis; refer to Removing the Battery.

2. Charge the battery for a minimum of 1 hour at 6 to 10 A.

   Note: Do not overcharge the battery.

3. When the battery is fully charged, unplug the charger from the electrical outlet, then disconnect the charger leads from the battery posts (Figure 57).

   

   Figure 57

   1. Positive (+) battery post
   2. Negative (–) battery post
   3. Red (+) charger lead
   4. Black (–) charger lead

1. Position the battery in the tray (Figure 56).

2. Using the fasteners previously removed, install the positive (red) battery cable to the positive (+) battery terminal.

3. Using the fasteners previously removed, install the negative battery cable to the negative (-) battery terminal.

4. Slide the red terminal boot onto the positive (red) battery post.

5. Secure the battery with the hold-down (Figure 56).

6. Install the battery cover by pushing down and tightening the 2 fasteners clockwise (Figure 55).

1. Park the machine on a level surface, disengage the blade-control switch (PTO), and engage the parking brake.

2. Shut off the engine, remove the key, and disconnect the spark-plug wires from the spark plugs.

1. Inspect the cutting edges (Figure 62).

2. If the edges are not sharp or have nicks, remove and sharpen the blade; refer to Sharpening the Blades.

3. Inspect the blades, especially in the curved area.

4. If you notice any cracks, wear, or a slot forming in this area, immediately install a new blade (Figure 62).

   

   Figure 62

   1. Cutting edge
   2. Curved area
   3. Wear/slot forming
   4. Crack

Note: The machine must be on a level surface for the following procedure.

1. Raise the mower deck to the highest height-of-cut position.

2. While wearing thickly padded gloves, or other adequate hand protection, slowly rotate the blade into a position that allows you to measure the distance between the cutting edge and the level surface the machine is on (Figure 63).

   

   Figure 63

   1. Deck
   2. Spindle housing
   3. Blade

3. Measure from the tip of the blade to the flat surface (Figure 64).

   

   Figure 64

   1. Blade (in position for measuring)
   2. Level surface
   3. Measured distance between blade and the surface (A)

4. Rotate the same blade 180 degrees so that the opposing cutting edge is now in the same position (Figure 65).

   

   Figure 65

   1. Blade (side previously measured)
   2. Measurement (position used previously)
   3. Opposing side of blade being moved into measurement position

5. Measure from the tip of the blade to the flat surface (Figure 66).

   Note: The variance should be no more than 3 mm (1/8 inch).

   

   Figure 66

   1. Opposite blade edge (in position for measuring)
   2. Level surface
   3. Second measured distance between blade and surface (B)

   1. If the difference between A and B is greater than 3 mm (1/8 inch), replace the blade with a new blade; refer to Removing the Blades and Installing the Blades.

      Note: If a bent blade is replaced with a new blade, and the dimension obtained continues to exceed 3 mm (1/8 inch), the blade spindle could be bent. Contact an Authorized Service Dealer for service.

   2. If the variance is within constraints, move to the next blade.

6. Repeat this procedure on each blade.

Replace the blades if they hit a solid object, or if the blade is out of balance or bent.

1. Hold the blade end using a rag or thickly padded glove.

2. Remove the blade bolt, curved washer, and blade from the spindle shaft (Figure 67).

   

   Figure 67

   1. Sail area of the blade
   2. Blade
   3. Curved washer
   4. Blade bolt

1. Use a file to sharpen the cutting edge at both ends of the blade (Figure 68).

   Note: Maintain the original angle.

   Note: The blade retains its balance if the same amount of material is removed from both cutting edges.

   

   Figure 68

   1. Sharpen at original angle.

2. Check the balance of the blade by putting it on a blade balancer (Figure 69).

   Note: If the blade stays in a horizontal position, the blade is balanced and can be used.

   Note: If the blade is not balanced, file some metal off the end of the sail area only (Figure 68).

   

   Figure 69

   1. Blade
   2. Balancer

3. Repeat this procedure until the blade is balanced.

1. Install the blade onto the spindle shaft (Figure 67).

   Important: The curved part of the blade must be pointing upward toward the inside of the mower to ensure proper cutting.

2. Install the curved washer (cupped side toward the blade) and the blade bolt (Figure 67).

3. Torque the blade bolt to 135 to 150 N∙m (100 to 110 ft-lb).

   

   Figure 70

   1. Sail area of the blade
   2. Blade
   3. Curved washer
   4. Blade bolt

1. Park the machine on a level surface, disengage the blade-control switch (PTO), and engage the parking brake.

2. Shut off the engine, remove the key, and wait for all moving parts to stop before leaving the operating position.

3. Set the height of cut to 76 mm (3 inches).

4. Carefully rotate the blades side to side.

5. Measure between the outside cutting edges and the flat surface (Figure 71).

   Note: If both measurements are not within 5 mm (3/16 inch), an adjustment is required; refer to Leveling the Mower Deck.

   

   Figure 71

   1. Blades side to side
   2. Outside cutting edges
   3. Measure from the tip of the blade to the flat surface here.

Check the front-to-rear blade level any time you install the mower. If the front of the mower is more than 7.9 mm (5/16 inch) lower than the rear of the mower, adjust the blade level.

1. Park the machine on a level surface, disengage the blade-control switch (PTO), and engage the parking brake.

2. Shut off the engine, remove the key, and wait for all moving parts to stop before leaving the operating position.

3. Set the height of cut to 76 mm (3 inches).

4. Carefully rotate the blades so they are facing front to rear (Figure 72).

5. Measure from the tip of the front blade to the flat surface and the tip of the rear blade to the flat surface (Figure 72).

   Note: If the front blade tip is not 1.6 to 7.9 mm (1/16 to 5/16 inch) lower than the rear blade tip, continue to the Leveling the Mower Deck procedure.

   

   Figure 72

   1. Blades front to rear
   2. Outside cutting edges
   3. Measure from the tip of the blade to the flat surface here.

1. Set the anti-scalp rollers to the top holes or remove them completely for this procedure; refer to Adjusting the Anti-Scalp Rollers.

2. Set the height-of-cut lever to the 76 mm (3 inch) position; refer to Adjusting the Height of Cut.

3. Place 2 blocks, each having a thickness of 6.6 cm (2-5/8 inches), under each side of the front edge of the deck but not under the anti-scalp roller brackets (Figure 73).

4. Place 2 blocks, each having a thickness of 7.3 cm (2-7/8 inches), under the rear edge of the cutting deck skirt, 1 on each side of the cutting deck (Figure 73).

   

   Figure 73

   1. Wood block—6.6 cm (2-5/8 inches) thick
   2. Wood block—7.3 cm (2-7/8 inches) thick
   3. Front edge

5. Loosen the adjustment bolts on all 4 corners so that the deck is sitting securely on all 4 blocks (Figure 74).

   

   Figure 74

   1. Deck-lift arm
   2. Chain
   3. Hook
   4. Adjustment bolt

6. Ensure that there is tension on all 4 chains (Figure 74).

7. Tighten the 4 adjustment bolts (Figure 74).

8. Ensure that the blocks fit snugly under the deck skirt and that all bolts are tight.

9. Verify that the deck is level by checking the side-to-side level and front-to-rear blade slope; repeat the deck leveling procedure if necessary.