SHIFT ROD ADJUSTMENT
impeller, and slide water pump down over cam. Be sure impeller cam does not fall out of position.

- Sharp edge of drive cam
- Direction of driveshaft rotation
IMPORTANT: Make sure the impeller engages the impeller cam. Serious powerhead damage will result if impeller cam 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).
25 IN. MODELS
Place water tube spacer with grommet on the impeller housing cover.

TYPICAL
- Spacer
- Grommet
IMPORTANT: Before installing gearcase, shift rod adjustment MUST be checked. Refer to SHIFT ROD ADJUSTMENT on p. 306.
Check the shift rod height from the shift rod hole to the surface of the gearcase using Universal Shift Rod Height Gauge, P/N 389997.

With the gearcase in NEUTRAL, rotate the shift rod up or down as necessary for correct adjustment. Once correct height is achieved, rotate rod one half turn or less to direct offset forward.
IMPORTANT: The NEUTRAL detent is a two step design. Make sure the NEUTRAL detent ball is in the center step before checking shift rod height.
Shift Rod Heights
| Model | Type | Height |
|---|---|---|
| 20 in. (L) | “S2” “L” “L2” “O” |
(20.945 in./ 532 mm)± 1/2 Half Turn20 15/16 in. |
| 25 in. (X) | “O” “M” “M2” |
(25.945 in./ 659 mm)25 15/16 in.± 1/2 Turn |
