216
GEARCASE
SHIMMING ADJUSTMENTS
Propeller Shaft Thrust Play
After adjusting all gear positions, measure the
propeller shaft play. If not within the following val-
ues, make a shim adjustment:
• Propeller shaft thrust play: 0.008 to 0.016 in.
(0.2 to 0.4 mm)
IMPORTANT: Maintain the forward gear thrust
washer at standard thickness (1.5 mm) and adjust
only the reverse gear thrust washer.
Assemble a Dial Indicator to the propeller shaft.
Push propeller inward.
Hold shaft in and set dial gauge pointer to zero.
Slowly pull shaft outward and read the maximum
thrust play on the dial.
• If play is too large, increase reverse gear thrust
washer thickness.
• If play is too small, reduce reverse gear thrust
washer thickness.
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