27
Pressure: 103 kPa (15 psi) front and rear
M–4287
1
Figure 28
1.
Valve stem
Cleaning the Cooling System
Service Interval/Specification
Before each use, remove grass clippings, dirt and grime
from the entire machine, muffler and engine air intake
screen Every 100 operating hours clean dirt and chaff
from the engine cylinder head fins and blower housing.
This will help insure adequate cooling and reduce the
possibility of overheating and mechanical damage to the
engine.
1. Raise seat and remove belt guard. See Removing Belt
Guard on page 21.
2. Open hood and pull spark plug wire(s) off.
3. To avoid overheating and possible engine damage
clean, grass, dust, dirt and oil from outside of engine,
air intake screen and muffler.
4. To clean cylinder head fins, remove engine from
chassis and remove cooling shrouds. Make sure
cooling shrouds are re-installed before operating
engine.
5. Reinstall belt guard. See Installing Belt Guard on page
21.
Adjusting the Belts
If belt slippage occurs, idler pulleys must be adjusted to
increase belt tension.
1. Disengage the power take off (PTO), set the parking
brake, and turn the ignition key to off. Remove the
key.
2. Raise seat and remove belt guard. See Removing Belt
Guard on page 21.
3. Measure distance from bottom of spacer on pulley
mounting screw to bottom of slot in idler adjustment
link. Distance should be 1/4 inch (6 mm) or less
(Fig. 29).
4. To adjust, remove cotter hair pin and washer securing
to mounting pin (Fig. 29).
5. Slide tension bracket off mounting pin. Adjust and
select new hole until bottom of spacer is within 1/4
inch from bottom of slot (Fig. 29).
6. Secure tension bracket with washer and cotter pin
(Fig. 29).
7. Reinstall belt guard. See Installing Belt Guard on page
21.
m–5180
1
2
3
4
5
6
Figure 29
1.
1/4 in. (6 mm) space
2.
Tension bracket
3.
Pulley mounting screw
4.
Bottom of slot
5.
Hair pin cotter
6.
Mounting pin
Replacing the Belts
To replace traction or jackshaft belt, use the following
procedures and belt routing diagram (Fig. 30).
1. Disengage the power take off (PTO), set the parking
brake, and turn the ignition key to off. Remove the
key.
2. Raise seat and remove belt guard. See Removing Belt
Guard on page 21.
3. Clutch anchor bolt must be removed, and clutch
unplugged from wire harness before traction belts can
be removed.
4. Release tension in idler pulleys before removing or
installing belts (Fig. 29).
5. Install belts, route traction belt over transmission as
shown (Fig. 30).
6. Install clutch anchor bolt and plug in connector.
