Johnson SKEE-HORSE 25-201R Service Manual page 38

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6-6
FUEL PUMP
BODY
MOUNTING
HOLES
Figure 6-10
FILTER
FILTER
CAP
Figure 6-11
Figure 6-12
Figure 6-13
170 89
17 0 89
Clean, inspect, and immediately reassemble the leaf valve assem-
bly, rather than leave it apart for reassembly later.
e. The leaves are designed to maintain contact with the leaf valve
body, and to spring away from the leaf valve body when predeter-
mined pressure is exerted against them. Attach the leaf valves
and back stop to the leaf valve body, then examine leaves carefully
to make certain that they lie flat against body.
f. Check tightness of leaf valve retaining screws and tighten any that
appear loose.
INST ALLA TION
a. Secure leaf plate assemblies to base, using a new leaf plate gasket.
Align leaf plate and base assembly on crankcase. Install intake
manifold on crankcase using a new intake manifold gasket. Be
certain that elongated hole in gasket and base plate aligns with
passage in intake manifold. Obstruction of this passage will pre -
vent fuel pump operation via the pulse line. Fasten with screws
and lockwashers.
b. Attach primer check valve hose to check valve on manifold.
c. Attach assembled carburetor to intake manifold with screws, nuts,
and lockwashers, using a new carburetor gasket.
FUEL PUMP
REMOVAL
a. Disconnect two hoses from fuel pump and filter assembly (see
Figure 6-10).
b. Remove two screws attaching pump and filter assembly to mount-
ing plate (see Figure 6-10), and remove pump and filter assembly.
NOTE: Filter assembly may be removed for cleaning and inspec-
tion without removing pump assembly by removing filter cap screw
(see Figure 6-11).
SAFETY PRECAUTION
Do not allow fuel to drip on hot engine or exhaust manifold because
of potential fire hazard.
CLEANING, INSPECTION, AND REPAIR
a. The fuel pump components are not serviced separately.
If
a mal-
function occurs, replace the complete pump.
b. Inspect the filter for accumulation of sediment by removing the
filter cap screw and the filter cap (see Figures 6- 8 and 6- 9).
Clean the filter cover and fuel connectors in solvent and blow dry.
c. Check for a clogged filter element. The fuel filter element on an
engine that has been in storage may be clogged without appearing
to be. During storage, volatile agents as well as anti - gum and
anti-varnish agents evaporate from the gaSOline that remains in the
fuel filter. The result is contamination of the filter element with
a clear form of varnish. This varnish is not readily soluble in
gasoline or cleaning solvent; therefore, the filter should be re-
placed at the start of each season. NOTE: Since the purpose of
the filter is not only to trap dirt but also to prevent moisture from
entering the carburetor, do not attempt to run the engine with the
filter element removed.
REASSEMBLY
a. Reassemble the fuel filter. Do not overtighten filter cap to fuel
pump body.
b. Attach fuel pump and filter assembly to plate with screws.
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