40 HP Mercury (no push in water)

[snunez]

Engine sounds great,shifts into gear and propeller turns, but boat moves real slow in the water.

 

[steelespike]

Re: 40 HP Mercury (no push in water)

Does the motor rev up?Does the speed increase some then motor revs with no increase in speed?details??2cylinder or 4cylinder?

 

[snunez]

Re: 40 HP Mercury (no push in water)

2 cylinder...engine revs up but boat moves very slow..no increase in speed.

 

[steelespike]

Re: 40 HP Mercury (no push in water)

Sounds like a spun hub you can check by putting a waterproof line across the underside of the hub and check it after you a test run.

 

[bktheking]

Re: 40 HP Mercury (no push in water)

yup spun hub.

 

[Faztbullet]

Re: 40 HP Mercury (no push in water)

I agree!!!!

 

[snunez]

Re: 40 HP Mercury (no push in water)

Im not sure what u mean by water proof line? Please explain..im new to boating.

Thanks!

 

[redjmp]

Re: 40 HP Mercury (no push in water)

You need to mark the rubber hub and the prop. If you do have a spun hub, the hub will spin inside the prop.
So you would need to scribe a line across the rubber hub and continue it until you have scratched a line on the metal of the prop or used a waterproof pen or paint so that you can tell if they don't line up after running under load...