18. BLEEDING THE FUEL SYSTEM (as required).
1. Check level of fuel in tank and see
that fuel tank cock is open.
2. Bleed filter by looserJng nut on fuel
leak-oH pipe (1) three turns.
Operate hand pumping lever (Fig
32, item 6) on fuellift pump until oil
escaping trom filter is tree of bub- \ - I.
les. ~, --~-
- ,
~~1 3. Bleed fuel hose (2) to injection' "
pump by slackening banjo nipple -~\ C~
)plug (4) three furns and operating ,
hand pumping lever until the \
escaping oil is free of bubbles. Fig. 29
4. Retighten banjo nipple plug securely, making sure that the base is not kinked
during tightening.
NOTE: Never unscrew the injection pump delivery valves (3).
S. Open decompressor valve and set govemor control lever to fun speed position.
Turn the engine over (either by hand or using the starter) until noticeable
"knocking" can he feIt in the injector pipes coincident with each injection.
'"
t The knocking indicates that the system is free of air and that the nozzIes are
t~ working.
I
,
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; ",
! .. i
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25
~~c-~c:;.
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