Filter
Top Products
Maintenance
Figure 24
1. Spark plug and wire location
Checking the Spark Plug
1. Look at the center of the spark plug (Figure 25).
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 lm,
or cracks.
2. Check the gap between the center and side
electrodes (
Figure 25). Bend the side electrode if
the gap is not correct.
Figure 25
1. Side electrode 3. Air gap (not to scale)
2. Center electrode
insulator
Installing the Spark Plug
1. Install the spark plug. Make sure that the air gap
is set correctly.
2. Tighten the spark plug to 15 ft-lb (20 N-m).
3. Push the wire onto the spark plug (
Figure 24).
Cleaning the Blower Housing
Service Interval: Every 100 hours/Yearly
(whichever comes rst)
More often under dirty
conditions.
To ensure proper cooling, make sure the grass screen,
cooling ns, and other external surfaces of the engine
are kept clean at all times.
1. Remove the blower housing and any other cooling
shrouds.
2. Clean the cooling ns and external surfaces as
necessary.
3. Make sure the cooling shrouds are reinstalled
Important: Operating the engine with a blocked
grass screen, dirty or plugged cooling ns,
and/or cooling shrouds removed, will cause
engine damage due to overheating.
Fuel System Maintenance
Replacing the Fuel Filter
Service Interval: Every 100 hours/Yearly
(whichever comes rst)
DANGER
In certain conditions, gasoline is extremely
ammable and highly explosive. A re 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 ame or where a
spark may ignite the gasoline fumes.
Never install a dirty lter 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
neutral position, engage parking brake, stop the
engine, remove the key, and wait for all moving
parts to stop before leaving the operating position.
3. The fuel lter is in the fuel line between the tank
and engine.
35