Engine Maintenance; Servicing The Air Cleaner - Toro 74408 Operator's Manual

Figure 26
1. 1/8 inch (3 mm) of the nut past the axle
12. Install the assembled nut and axle into the
wheel on the side with the bearing and a new
seal (Figure 27).
13. Place the wheel with the open end facing
up and fill the area inside the wheel with
multi-purpose grease.
14. Install the second bearing and a new seal into
the wheel (Figure 27).
15. Apply thread locking adhesive to the second
spacer nut and install it onto the axle with the
wrench flats facing outward.
16. Torque the spacer nut to 75-80 in-lb (8-9 N⋅m)
then loosen it and torque it to 20–25 in-lb (2-3
N⋅m). Make sure the axle does not extend past
either nut (Figure 26).
17. Install the seal guards over the wheel hubs and
insert the wheel into the caster fork (Figure 25).
18. Install the caster bolt and tighten the nut
(Figure 25).
Important: Check the bearing
adjustment often to prevent seal and
bearing damage. Spin the caster tire. The
tire should not spin freely more than 1 to 2
revolutions or have any side-to-side play
between the caster fork. If the wheel spins
freely, adjust the torque on the spacer nut
until there is a slight amount of drag.
Figure 27
1. Spacer nut
2. Bearing seal (new seals
required)
3. Bearing

Engine Maintenance

Servicing the Air Cleaner

Service Interval/Specication
Foam element: Clean it after every 25 operating
hours.
Paper element: Check it after every 50 operating
hours. Replace it after every 200 operating hours
or yearly, which ever comes first.
Inspect the foam and paper elements and replace
them if they are damaged or excessively dirty.
Note: Service the air cleaner more frequently
(every few operating hours) if the operating
conditions are extremely dusty or sandy.
Important: Do not oil the foam or paper
element.
Removing the Foam and Paper
Elements
1. Disengage the PTO 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. Clean around the air cleaner to prevent dirt
from getting into the engine and causing
damage (Figure 28).
4. Unscrew the cover knob and remove the air
cleaner cover (Figure 28).
26
4. Caster wheel
5. Nut and axle assembled