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Figure 37
Installing the Spark Plug
Tighten the spark plug to 25 to 29 N·m (18 to 22 ft-lb).
Figure 38
Cleaning the Blower
Housing
Service Interval: Every 100 hours/Yearly (whichever
comes first)
To ensure proper cooling, make sure that the grass
screen, cooling fins, and other external surfaces of the
engine are kept clean at all times.
Clean the cooling fins and external surfaces as
necessary. Make sure that the cooling shrouds are
installed. Torque the blower housing screws to 7.5
N·m (5.5 ft-lb).
Important:
Operating the engine with a blocked
grass screen, dirty or plugged cooling fins, and/or
cooling shrouds removed, causes engine damage
due to overheating.
Fuel System
Maintenance
DANGER
In certain conditions, fuel is extremely
flammable and highly explosive. A fire or
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explosion from fuel can burn you, others, and
can damage property.
• Perform any fuel-related maintenance
when the engine is cold. Do this outdoors
in an open area. Wipe up any fuel that
spills.
• Never smoke when draining fuel, and stay
away from an open flame or where a spark
may ignite the fuel fumes.
Replacing the In-Line Fuel
Filter
Service Interval: Every 100 hours—Replace the
Never install a dirty filter if it is removed from the fuel
line.
1.
Park the machine on a level surface and
disengage the blade-control switch.
2.
Move the motion-control levers outward to the
P
position, shut off the engine, remove the
ARK
key, and wait for all moving parts to stop before
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leaving the operating position.
3.
Replace the in-line filter
32
in-line fuel filter.
(Figure
39).
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