Engine Maintenance; Servicing The Air Cleaner - Toro 74901 Operator's Manual

14. Apply a thread-locking adhesive to the second spacer
nut, and thread it onto the axle with the wrench flats
facing outward.
15. Torque the nut to 8 to 9 N-m (75 to 80 in-lb), loosen,
then torque to 2 to 3 N-m (20 to 25 in-lb).
Note: Make sure axle does not extend beyond either
nut.
16. Install the seal guards over the wheel hub, and insert
wheel into the caster fork.
17. Install the caster bolt and tighten the nut fully.
Important: To prevent seal and bearing damage, check
the bearing adjustment often. Spin the caster tire. The
tire should not spin freely (more than 1 or 2 revolutions)
or have any side play. If the wheel spins freely, adjust the
torque on the spacer nut until there is a slight amount of
drag. Apply another layer of thread-locking adhesive.

Engine Maintenance

WARNING
Contact with hot surfaces may cause personal
injury.
Keep hands, feet, face, clothing, and other body
parts away the muffler and other hot surfaces.

Servicing the Air Cleaner

Service Interval: Every 150 hours
Every 300 hours/Yearly (whichever comes
first)—Replace the primary air filter (more often in
dusty or sandy conditions).
Every 300 hours—Check the inner air filter.
Every 600 hours—Replace the inner air filter.
Note: Check the filters more frequently if the operating
conditions are extremely dusty or sandy.
Removing the Filters
1. Disengage the PTO, move the motion-control levers to
the neutral-locked position, and set the parking brake.
2. Stop the engine, remove the key, and wait for all moving
parts to stop before leaving the operating position.
3. Release the latches on the air cleaner, and pull the
air-inlet cover off the air-cleaner body (Figure 46).
4. Clean the air-inlet screen and cover.
5. Install the air-inlet cover and secure it with the latches
(Figure 46).
2
1
1. Air-inlet cover
2. Air-inlet screen
6. Release the latches on the air cleaner and pull the
air-cleaner cover off the air-cleaner body (Figure 47).
7. Clean the inside of the air-cleaner cover with
compressed air.
35
3
4
Figure 46
3. Air-cleaner body
4. Latch
g012996