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and fingers below to release the valve from the cap.
Wash and rinse the whole valve in a petroleum-base
solvent. Dry the valve and re-install. Be sure the per-
forated disc is toward the engine..
W A R N I N G
Use extreme care when cleaning with a petro-
leum-base cleanser due to tire hazard.
Electric Fuel Pump
Every 100 operating hours or sooner, drain the fuel
pump and check the filter (Figure 23). To gain access
to the filter, turn the base hex nut counterclockwise
(facing bottom of pump). If the element appears dirty,
replace with a new one. Be sure to replace the gaskets
during reassembly.
R U B B E R
B R E A T H E R
T U B E C A P
V A L V E
V A L V E
F L A P P E R -
FIGURE 21. CRANKCASE BREATHER
FUEL SYSTEM
W A R N I N G J | Because of fire hazard, never expose fuel sys-
tem to sparks, flame, etc.
Fuel Filters
Every 100 operating hours or sooner, clean the fuel
filter elements. Remove the gas tank cap and fuel
pickup assembly. Inspect the ball check and valve
(Figure 22) and clean with compressed air.
F U E L
CONNECTOR
OPEN V E N T ON
MODELS WITH T A N K
OUTSIDE COMPARTMENT
\
\
FUEL PICKUF
\ '
\
LINE
BALL CHECK
AND FILTER
FIGURE 22. FUEL CAP AND PICKUP ASSEMBLY
—
E L E C T R I C
F U E L
P U M P
G A S K E T
B 6 9
FIGURE 23. ELECTRIC FUEL PUMP
VACUUM SPEED BOOSTER
Use a fine wire to clean the small hole in the short
vacuum tube which fits into the hole in the top of the
engine intake manifold (Figure 24). Do not enlarge
this hole.
If there is tension on the external spring of the
vacuum speed booster when the generating set is
operating at no load or light load, it may be due to
improper adjustment, a restricted hole in the small
vacuum tube, or a leak in the booster diaphragm or
gasket.
C L E A N H O L E
FIGURE 24. VACUUM SPEED BOOSTER
17
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