Question about Coleman 9.9 HP Manual Start Outboard Motor 9.9 HP Manual Start Outboard Motor

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Coleman outboard overheating

Outboard not pumping water, overheating

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You should change your impeller.
It is located at the top of the gearbox, around the vertical engine shaft.
First, disconnect the gear control. Underneath the steering bracket, you'll see a long nut with a counternut. ( Maybe you'll have to shift FWD or BWD to get better access ). Loosen the counternut 1/4 turn and then turn the long nut up ( 2 open box wrenches 10mm ).
Then remove the 4 bolts holding from lower to upper the gearcase ( just above the anti-cavitation plate )
The gearbox should drop down easily.
Then remove the 4 screws of the waterpump ( top of gearcase, around the long vertical shaft ). Lift the waterpupp housing, you'll get the impeller.
To reassemble the waterpump, grease the cup in the housing with PTFE or silicone grease, and while pushing the housing down over the impeller, rotate the shaft clockwise.
Reassemble all the rest in reverse order.
Check and adjust the gear shifting...

Posted on Mar 08, 2015

  • Fabrice Wolters Mar 08, 2015

    You should change your impeller.

    It is located at the top of the gearbox, around the vertical engine shaft.

    First, disconnect the gear control. Underneath the steering bracket, you'll see a long nut with a counternut. ( Maybe you'll have to shift FWD or BWD to get better access ). Loosen the counternut 1/4 turn and then turn the long nut up ( 2 open box wrenches 10mm ).

    Then remove the 4 bolts holding from lower to upper the gearcase ( just above the anti-cavitation plate )

    The gearbox should drop down easily.

    Then remove the 4 screws of the waterpump ( top of gearcase, around the long vertical shaft ). Lift the waterpupp housing, you'll get the impeller.

    To reassemble the waterpump, grease the cup in the housing with PTFE or silicone grease, and while pushing the housing down over the impeller, rotate the shaft clockwise.

    Reassemble all the rest in reverse order.

    Check and adjust the gear shifting...



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