316
GEARCASE SERVICE, 75 – 90 HP MODELS
WATER PUMP SERVICE
Apply Triple-Guard grease to threads of the trim
tab screw. Install and align the trim tab with the
index marks noted prior to disassembly. Tighten
the trim tab screw to a torque of 35 to 40 ft. lbs.
(47 to 54 N·m). For adjustment, refer to Trim Tab
Adjustment on p. 35.
Place the shift rod in the shift rod lever. Install the
retaining pin and washer. Tighten pin to a torque
of 60 to 84 in. lbs. (7 to 9.5 N·m).
IMPORTANT: During break-in period of a reas-
sembled gearcase, change the gearcase lubricant
between 10 to 20 hours of operation.
WATER PUMP SERVICE
Disassembly
Rotate the driveshaft counterclockwise to unlock
the impeller key. Remove the four impeller hous-
ing screws.
Slide the water pump off the driveshaft. Remove
the impeller key, O-ring, impeller plate, and gas-
ket. Discard the gasket.
Remove all the parts from the housing.
Inspection
Check impeller for overheating, hub separation,
and other wear or damage.
Check liner and wear plate for scoring, distortion,
and impeller material transfer.
Inspect the housing for cracks or melting.
Make sure gasket surface is clean and smooth.
1. Trim tab screw
2. Index mark
COA3663
1. Shift rod screw 002013
A WARNING
To prevent loss of operator control, check
for proper shifting operation and adjust, if
necessary.
1. Screws 31998
1. O-ring
2. Impeller plate
DSC02328
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