48in Snowthrower

• Thoroughly inspect the area where you will use the attachment, and remove all doormats, sleds, boards, wires, and other foreign objects.

• Shut off the engine before unclogging the attachment and always use a stick.

• Never direct the discharge toward people or areas where property damage can occur.

• When not actively clearing snow, disengage power to the auger.

• Exercise extreme caution when operating the machine on or crossing gravel drives, walks, or roads. Stay alert for hidden hazards or traffic.

• Do not overload the attachment capacity by attempting to clear snow at too fast a rate.

• Never operate the machine at high transport speeds on slippery surfaces.

• Do not operate the machine at a speed that could cause injury to you and/or damage to the machine if it were to hit an unseen, immovable object.

• Raise the attachment when transporting it.

• Run the attachment a few minutes after throwing snow to prevent freeze-up of the collector and impeller.

1. Park the machine on a level surface.

2. Disengage the PTO, engage the parking brake, and move the motion-control levers outward to the NEUTRAL-LOCK position.

3. Raise the A-frame and support it using blocks or a cylinder lock.

4. Shut off the engine and remove the key.

Refer to the Removing the Deck procedure in the Operator’s Manual for your machine. Retain the fasteners securing the strut bracket to the machine.

Remove the nut and bolt from each caster, move the caster to the middle position, and install the nut and bolt (Figure 3). Torque to 91 to 113 N∙m (67 to 83 ft-lb).

Figure 3

1. Nut and bolt
2. Middle position

Parts needed for this procedure:

1. Remove the 4 carriage bolts (3/8 x 2-1/2 inches), 4 nuts (3/8 inch), and the existing lock bracket (Figure 4).

   

   Figure 4

   1. Carriage bolt (3/8 x 2-1/2 inches)
   2. Nut
   3. Lock bracket

2. Use the fasteners that you just removed to install the snowthrower lock bracket (Figure 5). Torque to 37 to 45 N∙m (27 to 33 ft-lb).

   

   Figure 5

   1. Carriage bolt (3/8 x 2-1/2 inches)
   2. Nut
   3. Snowthrower lock bracket

Parts needed for this procedure:

1. Install the attachment tube to the accessory frame receiver. Secure it using the hitch pin and hairpin cotter in the front hole of the frame.

   

   Figure 6

   1. Hitch pin
   2. Accessory frame
   3. Hairpin cotter
   4. Attachment tube

2. Install the 2 stop blocks.

   

   Figure 7

   1. Carriage bolt—3/8 x 1-1/2 inches (2)
   2. Stop block (2)
   3. Nut—3/8 inch (2)

3. Secure the strut assembly to the frame using the fasteners removed from the mower strut bracket and 2 washers.

   

   Figure 8

   1. Carriage bolt—3/8 x 2-1/4 inches (2)
   2. Strut assembly
   3. Washer (2)
   4. Nut—3/8 inch (2)

4. Loosely install the chute-cable bracket on the frame near lift-arm assembly.

   

   Figure 9

   1. Carriage bolt (5/16 x 4 inches)
   2. Chute-cable bracket
   3. Nut (5/16 inch)
   4. Lift-arm assembly

5. Remove the shoulder bolt, washer, and nut securing the linkage to the lift-arm assembly. Discard the washer.

   

   Figure 10

   1. Nut
   2. Washer
   3. Shoulder bolt

6. Route the chute cable between the chute and the chute post.

   

   Figure 11

7. Use the shoulder bolt and nut to install the chute cable to the lift-arm assembly. Torque the bolt 98 to 119 N∙m (72 to 88 ft-lb).

   Note: When you remove the snowthrower from the machine, remove the fasteners securing the cable to the cable plate shown in Figure 13. Do not remove the cable plate from the linkage and lift-arm assembly.

   

   Figure 12

   1. Nut
   2. Chute cable
   3. Remove these fasteners when removing the snowthrower.
   4. Cable plate
   5. Shoulder bolt
   

   Figure 13

   1. Nut
   2. Cable
   3. Shoulder bolt
   4. Washer (2)
   5. Cable plate

8. Secure the cable in the chute-cable bracket.

   

   Figure 14

   1. Cable is tight when height-of-cut is in transport position.

9. Raise the height-of-cut lever and lock it into the highest (transport) position.

   

   Figure 15

10. Slide the bracket forward so that the cable is tight (Figure 14).

11. Tighten the fasteners securing the bracket.

Parts needed for this procedure:

Refer to the Installation Instructions for the kit.

1. Connect the hoses from the snowthrower cylinder to the hoses from the low flow assembly.

   

   Figure 16

   1. Snowthrower cylinder
   2. Low-flow assembly hoses

2. Connect the hoses from the hydraulic pump to the high flow assembly.

   

   Figure 17

   1. High-flow assembly
   2. Hydraulic pump

1. Start the machine and lower the snowthrower on cardboard so that there is a small gap between the scraper edge and the ground.

2. Shut off the machine and remove the key.

3. Loosen the nuts that secure both skids to the auger sides until the skids slide up and down easily.

   

   Figure 18

   1. Skid
   2. Nut (2)

4. Move the skids down until they are even with the ground.

5. Adjust the stop bolt as follows:

   1. Support the A-frame using blocks or a cylinder lock.

   2. Loosen the jam nut.

      

      Figure 19

      1. Stop bolt
      2. Jam nut

   3. Adjust the stop bolt until it contacts the A-frame.

      Note: This prevents the hydraulics from applying force on the skids and reduces wear.

   4. Tighten the jam nut.

• Move the left switch up or down to raise or lower the snowthrower.

• Move the right switch left or right to angle the discharge chute.

Figure 21

1. Raise or lower the snowthrower
2. Angle the discharge chute left or right.

Use the power-takeoff switch (PTO) to start and stop the attachment.

Use the height-of-cut lever to raise and lower the snowthrower deflector.

Important: Raise the snowthrower when transporting it.

1. Start the machine.

2. Move the throttle lever midway between the FAST and SLOW positions.

   Note: In cold conditions, the traction unit engine may need time to warm up prior to engaging the attachment.

3. Engage the PTO switch to start the snowthrower auger.

4. Move the throttle lever to the FAST position before clearing snow.

5. Disengage the PTO switch or release the motion-control levers to stop the snowthrower auger.

Note: The auger should spin counterclockwise when viewed from the left side from the operating position (Figure 22). If the auger spins in the wrong direction, switch the couplers on the hydraulic hoses connected to the High Flow Kit.

Figure 22

Note: If an object is lodged in the auger, reverse the hydraulic flow. If this does not dislodge the object, continue as follows.

1. Park the machine on a level surface, disengage the 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. Disconnect the hydraulic hoses.

4. Use a stick to clear the snowthrower.

5. Connect the hydraulic hoses before resuming operation.

1. Park the machine on a level surface, disengage the 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 nuts on each drift breaker and adjust the breaker as necessary (Figure 23).

4. Tighten the nuts.

Figure 23

1. Nut
2. Drift breaker

Use a heavy-duty trailer or truck to transport the machine. Use a full-width ramp. Ensure that the trailer or truck has all the necessary brakes, lighting, and marking as required by law. Please carefully read all the safety instructions. Knowing this information could help you or bystanders avoid injury. Refer to your local ordinances for trailer and tie-down requirements.

Selecting a Trailer

Warning

Loading a machine onto a trailer or truck increases the possibility of tip-over and could cause serious injury or death (Figure 24).

• Use only a full-width ramp; do not use individual ramps for each side of the machine.

• Ensure that the length of ramp is at least 4 times as long as the height of the trailer or truck bed to the ground.

Figure 24

1. Full-width ramp in stowed position
2. Ramp is at least 4 times as long as the height of the trailer or truck bed to the ground
3. H=height of the trailer or truck bed to the ground
4. Trailer

Unloading the Machine

1. Lower the ramp.

2. Unload the machine from the trailer with the heavy end up the ramp (Figure 27).

   • If the attachment is installed, unload the machine with the front up the ramp.

   • If the attachment is not installed, unload the machine with the rear up the ramp.

Figure 27

Machines without the attachment installed

1. Machine with attachment—unload the machine with the front up the ramp.
2. Machine without attachment—unload the machine with the rear up the ramp.

• In snowy and cold conditions, some controls and moving parts may freeze. Do not use excessive force when trying to operate frozen controls. If you have difficulty operating any control or part, start the engine and let it run for a few minutes. Thaw frozen parts before operating the machine.

• After using the machine, let the engine run for a few minutes to prevent moving parts from freezing. Shut off the engine, wait for all moving parts to stop, and remove all ice and snow from the machine.

• Always set the throttle to the FAST position when throwing snow.

• Remove snow as soon as possible after it falls. This produces the best snow removal results.

• Do not overload the snowthrower by clearing snow at too fast a rate.

• If the engine slows down or the front of the snowthrower rides up, reduce the forward speed.

• Discharge snow downwind whenever possible and overlap each pass to ensure complete snow removal. If wheels slip, reduce the forward speed.

• Run the snowthrower for a few minutes after clearing snow so that moving parts do not freeze.

Check the skids to ensure that the auger does not contact the paved or gravel surface. Adjust the skids as needed to compensate for wear.

1. Park the machine on a level surface, disengage the 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 nuts that secure both skids to the auger sides until the skids slide up and down easily (Figure 28).

   Important: Support the auger blades above the ground using the skids.

   

   Figure 28

   1. Skid
   2. Nut (2)

4. Move the skids down until they are even with the ground.

5. Ensure that the trip edges are 3 mm (1/8 inch) above and parallel to a level surface (Figure 30).

   Note: If the pavement is cracked, rough, or uneven, adjust the skids to raise the trip edges. For gravel surfaces, adjust the skids further down to prevent the machine from picking up rocks.

6. Firmly tighten the nuts that secure both skids to the auger sides.

   Note: To quickly adjust the skids if they loosen, support the trip edges 3 mm (1/8 inch) off the pavement, then adjust the skids down to the pavement

7. Adjust the stop bolt as follows:

   1. Support the A-frame using blocks or a cylinder lock.

   2. Loosen the jam nut.

      

      Figure 29

      1. Stop bolt
      2. Jam nut

   3. Adjust the stop bolt until it contacts the A-frame.

      Note: This prevents the hydraulics from applying force on the skids and reduces wear.

Replace the trip edges when they are worn.

Note: Operating conditions affects trip-edge wear. Operating the snowthrower on dry pavement will cause the trip edges to wear faster than operating it on wet snow.

1. Park the machine on a level surface, disengage the 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. Remove the bolts and retainer plate.

   

   Figure 30

   1. Bolt (4)
   2. Retainer plate
   3. Trip Edge

4. Remove the trip edge and install a new one using the retainer plate and fasteners.

1. Park the machine on a level surface, disengage the 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 pipe plug and remove the pipe plug from the gearbox.

   Note: If needed, use pliers to assist in removing the pipe plug.

   

   Figure 31

4. Check the oil level using a suitable measuring device, such as a clean cable tie. The oil should be approximately 3.8 cm (1.5 inches) below the filler opening

   

   Figure 32

5. If the oil level is low, add SAE 80W-140 gear oil lubricant to the gearbox, then check the oil level again.

   Note: Do not use synthetic oil.

6. Install the pipe plug in the gearbox.

Check belt for cracks, frayed edges, burn marks, wear, signs of overheating, or any other damage.

The signs of a worn belt are squealing while the belt is rotating, cracks, cuts or gouges. Replace the belt if you detect any of these signs.

1. Park the machine on a level surface, disengage the 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. Remove the 4 hairpin cotters securing the belt cover (Figure 33).

   

   Figure 33

   1. Hairpin cotter (4)
   2. Belt cover

4. Remove the belt from the pulleys (Figure 34).

   Warning

   The spring is under tension when installed and can cause personal injury.

   Be careful when removing the belt.

   

   Figure 34

   1. Spring
   2. Belt

5. Wrap the new belt around the small pulley (Figure 34).

6. Rotate the large pulley by hand and wrap the belt around it as it rotates (Figure 34).

   Note: The tension on the spring will increase as you rotate the belt on the pulley.

7. Install the belt cover and secure it using the 4 hairpin cotters (Figure 33).

1. Park the machine on a level surface, disengage the 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. Remove the drive-chain cover.

   

   Figure 35

   1. Wing nut (2)
   2. Spacer
   3. Cover
   4. Bolt (2)

4. Loosen the nut.

   

   Figure 36

   1. Sprocket
   2. Shoulder bolt
   3. Nut

5. Using a closed-end wrench, pull the nut to apply tension to the chain, and tighten the bolt using a socket wrench.

   Note: Ensure that the chain is tight but does not bind.

   Important: If you remove the shoulder bolt, apply anti-seize compound to the bolt before installing it.

6. Tighten the nut.

7. Install the cover as shown in Figure 35.