29
2. Check the gap between the center and side electrodes
(Fig. 26). Bend the side electrode (Fig. 26) if the gap is
not correct.
0.040 in.
(1.02 mm)
2
3
1
Figure 26
1.
Center electrode insulator
2.
Side electrode
3.
Air gap (not to scale)
Installing the Spark Plug
(s)
1. Install the spark plug(s) and metal washer. Make sure
the air gap is set correctly.
2. Tighten the spark plug(s) to 20 ft-lb (27 N.m).
3. Push the wire(s) onto the spark plug(s) (Fig. 25).
Greasing and Lubrication
Service Interval/Specification
Grease with No. 2 general purpose lithium base or
molybdenum base grease.
How to Grease
1. Disengage the power take off (PTO), chock or block
tires, and turn the ignition key to “OFF” to stop the
engine. Remove the key.
2. Clean the grease fittings with a rag. Make sure to
scrape any paint off the front of the fitting(s).
3. Connect a grease gun to the fitting. Pump grease into
the fittings.
4. Wipe up any excess grease.
Lubricate the caster and wheel bearings
1. Lubricate the front and back wheel bearings and front
spindles until grease begins to ooze out of the bearings
(Fig. 27).
m–2147
Figure 27
Greasing the Belt Idlers
1. Stop the engine, chock or block tires, remove the key
and disconnect the spark plug wire(s) from the spark
plug(s).
2. Grease the idler pulley pivot for the deck belt
(Fig. 28).
3. Grease the idler pulley pivot for the PTO drive belt
(Fig. 28).
M-5194
Figure 28
Cleaning the Cooling System
Service Interval/Specification
Before each use, check and clean engine cooling system.
Remove any build–up of grass, dirt or other debris from
the cylinder and cylinder head cooling fins, air intake
screen on flywheel end, and carburetor–governor levers
and linkage. This will help insure adequate cooling and
correct engine speed and will reduce the possibility of
overheating and mechanical damage to the engine.