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#3203607 - 03/25/13 05:28 PM boat motor ?
tcuurry
4 Point


Registered: 11/12/11
Posts: 152
Loc: milan tn

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i have a Johnson 15 hp boat motor and when i put it in forward gear as long as i idle the boat will go forward but when i give it more gas it just revs up real high and never gets any faster could it be the forward gear i have not tried running it in revers but i have looked at the prop i do not think i have hurt that rubber gram mint any thoughts would be great
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#3203704 - 03/25/13 06:46 PM Re: boat motor ? [Re: tcuurry]
catman529
spiderboy
16 Point


Registered: 11/10/10
Posts: 16199
Loc: Franklin TN

confused Online
Mine will occasionally slip at full throttle but usually only after running it most of the day. Haven't figured it out yet. I think removing some fishing line helped. Take the prop off and see if there is fishing line. If there is, make sure your lower unit hasn't got water seeped into the oil from the line cutting the seal. Hope someone else here with more knowledge on boat motors can help you pinpoint the problem.
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#3203708 - 03/25/13 06:52 PM Re: boat motor ? [Re: catman529]
Bigg'un4214
10 Point


Registered: 05/10/04
Posts: 2594
Loc: east tn

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The linkage could need adjusting. The bushing in the prop could be worn to the point that it is slipping as well.
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#3203745 - 03/25/13 07:29 PM Re: boat motor ? [Re: Bigg'un4214]
shorefisherman
6 Point


Registered: 04/07/08
Posts: 613
Loc: West SSiiide Putnam Co.

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you cant tell a spun out prop by looking at it, it needs to be under load, get a new prop youl be good to go
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#3203757 - 03/25/13 07:33 PM Re: boat motor ? [Re: shorefisherman]
RackHntr
6 Point


Registered: 12/02/07
Posts: 543
Loc: Greene ,TN

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 Originally Posted By: shorefisherman
you cant tell a spun out prop by looking at it, it needs to be under load, get a new prop youl be good to go

Does that mean the gear in the prop is stripped?

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#3204058 - 03/26/13 06:50 AM Re: boat motor ? [Re: shorefisherman]
Unicam Administrator
Grumpaw
16 Point


Registered: 12/13/00
Posts: 19297
Loc: Dallas, GA. & Cookeville, TN

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 Originally Posted By: shorefisherman
you cant tell a spun out prop by looking at it, it needs to be under load, get a new prop youl be good to go



Agreed, my 35 Evinrude spun the grommet in the prop and you could not tell. Put a new prop on her and all was good.
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#3204298 - 03/26/13 10:54 AM Re: boat motor ? [Re: Unicam]
Winchester
Non-Typical


Registered: 12/05/03
Posts: 27498
Loc: TN

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Sounds like you spun the hub in the prop?
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#3204348 - 03/26/13 11:26 AM Re: boat motor ? [Re: Winchester]
TNTomtaker01
10 Point


Registered: 01/08/06
Posts: 3052
Loc: Middle

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Couldn't you put it in gear (with motor off) and try to spin the prop? If prop is not spun you shouldn't be able to turn it.
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