Figure 25
1. Spark plug wire
2. Clean around spark plug and remove plug
from cylinder head.
Important:
Replace a cracked, fouled,
or dirty spark plug. Do not sand blast,
scrape, or clean electrodes because engine
damaged could result from grit entering
the cylinder.
3. Set air gap at 0.028-0.032 inch (Figure 26).
Install correctly gapped spark plug and tighten
firmly to 17 ft.-lb.
Figure 26
Fuel System
Maintenance
Cleaning the Fuel Filter
Initially, clean fuel filter after the first 25 hours of
operation; thereafter clean after every 50 hours
operation.
1. Close fuel shut off valve and unscrew bowl
from filter body (Figure 27).
Figure 27
1. Shut-off valve
2. Bowl
2. Clean bowl and filter in clean gasoline and
install.
Electrical System
Maintenance
Servicing the Interlock
Switch
Use the following procedure if the switch needs
adjustment or replacement.
1. Make sure the engine is off and traction lever
is Disengaged.
2. Engage traction lever until it contacts neutral
stop (Figure 28).
Figure 28
1. Traction lever
3. Interlock switch
2. Neutral stop
4. .032" Gap
26
