Maintenance
26
Checking the Spark Plug
1.
Look at the center of the spark plug (Fig. 23). 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: Never clean the spark plug.
Always replace the 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 (Fig. 23). Bend the side electrode
(Fig. 23) if the gap is not correct.
m–1870
0.030”
(0.762 mm)
2
3
1
Figure 23
1.
Center electrode insulator
2.
Side electrode
3.
Air gap (not to scale)
Installing the Spark Plug
1.
Install the spark plug and metal washer. Make
sure the air gap is set correctly.
2.
Tighten the spark plug to 15 ft-lb (20.4 Nm).
3.
Push the wire onto the spark plug (Fig. 22).
4.
Close the hood.
Fuel Tank
Draining The Fuel Tank
POTENTIAL HAZARD
•
In certain conditions gasoline is extremely
flammable and highly explosive.
WHAT CAN HAPPEN
•
A fire or explosion from gasoline can burn
you, others, and cause property damage.
HOW TO AVOID THE HAZARD
•
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 drain gasoline near an open flame or
where gasoline fumes may be ignited by a
spark.
•
Never smoke a cigarette, cigar or pipe.
1.
Park the machine so that the left front side is
slightly lower than the right side to assure fuel
tank drains completely. Then disengage the blade
control (PTO), shift into neutral, set the parking
brake, and turn the ignition key to “OFF” to stop
the engine.
2.
Open the hood.
3.
Squeeze the ends of the hose clamp together and
slide it up the fuel line toward the fuel tank
(Fig. 24).
4.
Pull the fuel line off the filter (Fig. 24) and allow
gasoline to drain into a gas can or drain pan.
Note:
Now is the best time to install a new
fuel filter because the fuel tank is
empty.
5.
Install the fuel line onto the filter. Slide the hose
clamp close to the filter to secure the fuel line
and filter.
Summary of Contents for 71198
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