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coating on the insulator usually means the air cleaner
is dirty.
Important: Do not clean the spark plugs.
Always replace a spark plug when it has a black
coating, worn electrodes, an oily film, or cracks.
2. Check the gap between the center and side electrodes
(Figure 54) and bend the side electrode, if the gap
is not correct.
Figure 54
1. Center electrode insulator
2. Side electrode
Installing the Spark Plugs
1. Install the spark plugs and metal washers.
2. Tighten the spark plugs to 18 to 22 ft-lb (24.4 to
29.8 N-m).
3. Push the wires onto the spark plugs (Figure 53).
4. Close and latch the seat.
3. Air gap (not to scale)
Fuel System
Maintenance
Replacing the Fuel Filter
Service Interval: Every 100 hours—Replace the fuel
filter.
Every 400 hours/Yearly (whichever
comes first)—Inspect the fuel lines.
1. Set the parking brake, stop the pump, stop the
engine, and remove the ignition key.
2. Release the latch on the back of the seat and lift the
seat forward.
3. Clamp off the hose on either side of the fuel filter
to prevent gas from pouring out of the hoses when
you remove the filter.
4. Place a drain pan under the filter.
5. Squeeze the ends of the hose clamps together and
slide them away from the filter (Figure 55).
6. Remove the filter from the fuel lines.
1. Hose clamp
2. Fuel line
7. Install a new filter and move the hose clamps close
to the filter.
Ensure that the flow direction arrow points toward
the engine.
47
Figure 55
3. Filter
4. Flow direction arrow
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