99
MAINTENANCE
Oil Pump Adjustment Procedure
400 Engines
1.Before adjusting the oil pump, check
engine idle RPM and carburetor ad-
justments which are found in the own-
er’s manual supplement.
2.Loosen throttle cable jam nut and turn
adjuster in or out until there is 1/16
″
-
1/8
″
(.16 - .32 cm) of throttle lever trav-
el before throttle slide starts to open.
See Owner’s Manual Supplement.
3.Place very slight pressure on the
throttle lever until all freeplay is re-
moved from throttle cable (to the point where the carb slide is just starting to
rise).
4.Lift boot up off adjuster sleeve. Remove the oil pump cover. Loosen the cable
adjuster locknut. Adjust oil pump cable until marks align (D) when the throttle
slide just begins to raise.
5.Tighten the locknut.
6.Recheck adjustment. If correct, slide boot all the way down over the upper por-
tion of the bottom nut to ensure good sealing against water entry. Reinstall oil
pump cover and gasket.
Oil Pump Adjustment 400
D
Boot
Adjuster
Sleeve
Upper Portion
of Bottom Nut