SINGLE-CYLINDER ENGINES
\
,-"
Outer
rotor
~'L/
~
-
B
O
d Y
.->-"'--\,
f-
- Feeler gauge
.
~~~~,;::,;::=:}
~
Straightedge
Body
Feeler
gauge
Pres
sure
relief
valve
An oil pressure relief valve is threaded into the front
(timing gear)
of
the engine (Figure 66). When oil pres-
sure exceeds 300-400 kPa (43-57 psi), the relief valve
opens and expels oil into the timing gear area.
89
Do not attempt to disassemble the oil pressure relief
valve. The valve is scaled and itmust be replaced as a unit
assembly.
Oi/pi
ckup
The oil pickup
(A,
Fi
gur
e 67) is located in the oil pan
(B). The pickup includes a strainer to prevent foreign mat-
ter from entering the lubrication system. A spring (C)
keeps the pickup in position in the oil pan.
NOTE
When removing the drain
plug
ill/he oilpan,
he aware thai the spring willforce the
plug
oul
when the threads disengage.
Remove the drain plug (D) for access to the oil pickup.
FLY
WHEEL
Removal/I nstallation
1. Remove the engine from the boat.
2. Remove the transmission.
5
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