70
Maintenance and Service
FUEL SYSTEM SERVICE
Changing the Primary Fuel Filter
To avoid potential fire hazard, DO NOT service any part of the fuel
system while smoking or in the presence of flames, sparks, or hot
surfaces, or when working on an operating engine. Failure to follow these
precautions can result in fire. To guard against burns from direct contact
with hot fuel, wear adequate protective clothing (face shield, heavy gloves
and apron, etc.) when working on a hot engine.
Never fill filter with fuel before installing. Contaminated fuel causes
accelerated wear to fuel system components.
It is very important to maintain high cleanliness when working in the fuel
system. If dirt is mixed in with the fuel after it is filtered, it will cause damage
to the injectors. Dirt can also cause air leakages that rob the engine of power.
Failure to change the primary fuel filter at the recommended intervals could
result in reduced power.
1.
Open the drain valve and drain off some fuel into a container. Remove
the filter cartridge together with the bowl.
2.
Separate the filter and the bowl. Clean and dry the bowl. Attach it to a
new filter. Use new seals at both the bowl and filter head joint. Install
both on the engine or vehicle.
3.
Purge air from the filter by operating the primer pump to draw fuel and
fill the filter. When using the hand primer, approximately 100 strokes
will be required.
4.
Start the engine and check for leaks. Correct any leaks with the engine
stopped.
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