273
GEARCASE
WATER PUMP SERVICE
12
Apply Triple-Guard grease to a new impeller O-
ring. Slide the O-ring down the driveshaft and half
way over installed impeller key to temporarily hold
key in place.
The sharp edge of the key is the leading edge in
clockwise rotation.
Slide the water pump down the driveshaft. Align
impeller slot with the impeller key. Rotate the
driveshaft to engage the key with the impeller, and
slide water pump down over key. Be sure impeller
key does not fall out of position.
Make sure the impeller engages the
impeller key. Serious powerhead damage will
result if impeller key is not in place.
Align the impeller housing with the gearcase.
Apply Gasket Sealing Compound to threads of the
four impeller housing screws. Install the screws
and tighten to a torque of 60 to 84 in. lbs. (7 to 9.5
N·m).
On 25 in. and 30 in. V6 models, place the appro-
priate water tube spacer and grommet on the
impeller housing cover.
After water pump is assembled completely, rotate
driveshaft counter clockwise 1/4 turn to unlock
and release impeller and key from driveshaft.
Next, pull up on driveshaft and turn clockwise to
lock impeller to shaft. This process increases
pump efficiency by locking the impeller lower on
the driveshaft.
Before installing gearcase, shift rod
adjustment MUST be checked. Refer to SHIFT
ROD ADJUSTMENT on p. 274.
1. Impeller plate gasket
2. Impeller plate
3. O-ring
4. Drive key
DSC02326
1. Sharp edge of drive key
2. Direction of driveshaft rotation
CO2995
1. Spacer
2. Grommet
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