Operator's Manual

32
2
1
m–4294
Figure 36
1. Spark plug wire installed 2. Spark plug
Checking the Spark Plug
Clean or replace the spark plug and set the gap every 100
hours.
1. Look at the center of the spark plug(s) (Fig. 37). If you
see light brown or gray on the insulator, the engine is
operating properly. A black coating on the insulator
usually means the air cleaner is dirty.
Important Always replace the spark plug(s) when it
has a black coating, worn electrodes, an oily film, or
cracks.
2. Clean the electrode by scraping or with a wire brush to
remove carbon deposits and wetness.
3. Check the gap between the center and side electrodes
(Fig. 37). Bend the side electrode (Fig. 37) if the gap is
not correct.
0.030 inch
(0.76 mm)
2
3
1
m–3215
Figure 37
1. Center electrode insulator
2. Side electrode
3. Air gap (not to scale)
Installing the Spark Plug(s)
1. Install the spark plug(s). Make sure that the air gap is
set correctly.
2. Tighten the spark plug(s) to 16 ft-lb (22 N⋅m).
3. Push the wire(s) onto the spark plug(s) (Fig. 36).
Replacing the Fuel Filter
Replace the fuel filter after every 200 operating hours or
yearly, whichever occurs first.
Never install a dirty filter if it is removed from the fuel line.
1. Disengage the power take off (PTO), set the parking
brake, stop the engine, and remove the key.
2. Close the fuel shut-off valve on the console.
3. Squeeze the ends of the hose clamps together and slide
them away from the filter (Fig. 38).
4. Remove the filter from the fuel lines.
5. Install a new filter and move the hose clamps close to
the filter (Fig. 39).
6. Open the fuel shut-off valve on the console.
1
2
M–4294
Figure 38
1. Filter 2. Hose clamp
Draining the Fuel Tank
Danger
In certain conditions, gasoline is extremely
flammable and highly explosive. A fire or
explosion from gasoline can burn you and others
and can damage property.
• Drain gasoline from the fuel tank when the
engine is cold. Do this outdoors in an open area.
Wipe up any gasoline that spills.
• Never smoke when draining gasoline, and stay
away from an open flame or where a spark may
ignite the gasoline fumes.