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Installing the Spark Plug
Tighten the spark plug to 27 N-m (20 ft-lb).
A
C
20 ft-lb
27 N-m
Figure 42
Cleaning the Blower Housing
Every 100 hours/Yearly (whichever comes first)
To ensure proper cooling, make sure the grass screen, cooling
fins, and other external surfaces of the engine are kept clean
at all times.
Annually, or every 100 hours of operation (more often
under extremely dusty, dirty conditions), remove the blower
housing, and any other cooling shrouds. Clean the cooling
fins and external surfaces as necessary. Make sure the cooling
shrouds are installed.
Important: Operating the engine with a blocked grass
screen, dirty or plugged cooling fins, and/or cooling
shrouds removed, will cause engine damage due to
overheating.
B
D
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Fuel System
Maintenance
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.
• Perform any fuel related maintenance 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.
Replacing the Fuel Filter
Service Interval: Every 100 hours/Yearly (whichever comes
first) (more often under dusty, dirty
conditions).
1. Disengage the blade-control switch (PTO), move the
motion-control levers to the neutral-lock position, and
set the parking brake.
2. Stop the engine, remove the key, and wait for all moving
parts to stop before leaving the operating position.
34
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