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MAINTENANCE AND LUBRICATION
Adjustments
Oil Pump - 400 Engines
1. Before adjusting the oil pump, check engine idle RPM and
carburetor adjustments in your owner’s manual supplement.
2. Loosen the throttle cable jam nut and turn the adjuster in or out
until there is 1/16″ -1/8″ (.16 - .32 cm) throttle lever travel before
the throttle slide starts to open. See your owner’s manual
supplement.
3. Place very slight pressure on the throttle lever until all freeplay is
removed from the throttle cable (to the point where the carb slide is
just starting to rise).
4. Lift the boot (1) up off the adjuster sleeve (2).
5. Remove the oil pump cover and loosen the cable adjuster locknut.
6. Adjust the oil pump cable until
the marks align (3) when the
throttle slide just begins to rise.
7. Tighten the locknut.
8. Recheck the adjustment. If it’s
correct, slide the boot all the way
down over the upper portion of
the bottom nut (4) to ensure good
sealing against water entry.
9. Reinstall the oil pump cover and gasket.
3
1
2
4