<"
20. CLEANING OF LIFT PUMP STRAINER
(When renewing fuel oil filter element):
The lift pump is positioned on the left \!I
.c hand side of the crankcase and sup- 1- ~
plies fuel to the filter . ~
1. Oose fUel tank cock. 8
9
2. Unscrew central bolt (1). Remove
cover. Remove and wash out the
strainer (2).
3. Replace strainer and fit cover, en- 3
suring that the gasket is properly in
position. Tighten central bolt se- I. /'
I curely.
4. Open fuel tank cock and bleed the
system. 5 .
i
6
7
~
Fig. 32
' 21. CHECKING OR RENEWING LIFT PUMP DIAPHRAGM (as required:)
1. Oose fuel tank cock.
2. Unscrew fuel pipe (9) and fuel hose (8) from lift pump. Remove se-
curing screws (7) and withdraw lift pump from engine. Oean strainer as in item 2
. above.
3. Loosen and remove upper body (3) or lift pump. Check that the two valves and
the diaphragm are in good order. If the diaphragm needs renewing, hold the lift
~ pump arm and press down on the diaphragm while at the same time turning it a
quarter of a turn to free it for removal.
Ensure toot the spring underneath the diaphragm is properly in place before
'" fitting a new diaphragm.
4. Check that the air vent (5) on the underside of the lift pump body is open.
(Prevents fuel being pumped into the engine if the diaphragm is damaged.)
"" 5. Re-assemble lift pump, fit to engine (check that gasket is in good condition) and
J
~. secure.
;
, Refit fuel hose and pipe and bleed the system.
27
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