reverse/forward backwards?? prop spins wrong way!?

EmaSe

Cadet
Joined
Sep 20, 2006
Messages
7
when driving, the reverse/forward is backwards on my boat for some reason.. i tried rewiring it but the boat wouldnt start when i did... i tried to see if the propellor was backwards but neither.. is there something on the drive mechanism that needs to be switched up somewhere?? i have an omc 175 or the ford 302.. what could cause this?
 

Don S

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Re: reverse/forward backwards?? prop spins wrong way!?

Don't get in such a hurry, your post has only been up for about 45 minutes when you asked if there was "Anybody?"

You might want to add what year and model drive you have.
 

thrasher

Chief Petty Officer
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May 23, 2007
Messages
443
Re: reverse/forward backwards?? prop spins wrong way!?

I don't understand how you rewire to change the reverse/forward direction? There are no electronics involved in the forward/reverse mechanism. Normally on the throttle housing (the big lever that you push forward or backwards to make the boat move) there are two ways of connecting the shift cable so that forward is forward and not reverse. If your engine is starting backwards (Highly unlikely), then you have the wrong starter motor, but again you don't rewire anything. You have a mechanical problem, not an electrical problem (well you do have an electrical problem now! but going the wrong way was not an electrical problem!).

If your problem is a simple as the throttle lever working in the wrong direction, then you need to find what make and model of throttle you have and get the manual, it will tell you how to reverse the shift direction. You should not need to rewire anything, as it sounds like the boat worked before, just went in the wrong direction, I would suggest putting all the wiring back to how it was and then get the manual for the throttle lever mechanism.

As Don, says, tell us the make, year and model of boat/engine/outboard and you might get some better answers. My crystal ball died years ago!! Good luck fixing it.

Gary
 

bruceb58

Supreme Mariner
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Mar 5, 2006
Messages
30,581
Re: reverse/forward backwards?? prop spins wrong way!?

Sounds like you may have an electric shift stringer. Happen to take your drive off lately?
 

EmaSe

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Joined
Sep 20, 2006
Messages
7
Re: reverse/forward backwards?? prop spins wrong way!?

no sorry i dont know that much about boats.. im just restoring a boat for the first time and this is the last thing thats acting funny.. i figured in the shifting mechanism there was maybe a wire that engaged the reverse.. i was wrong and plugged everything back in already the right way.. sorry for acting rushed i was trying to take the boat out today to work on it and this arised..

the make is a
92 renken inboard stern drive 175 omc
 

EmaSe

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Joined
Sep 20, 2006
Messages
7
Re: reverse/forward backwards?? prop spins wrong way!?

if i plug in the connector for the throttle housing backwards the boat wont start.. so im guessing i used to have it on the correct way.
 

azrag

Recruit
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Aug 25, 2007
Messages
4
Re: reverse/forward backwards?? prop spins wrong way!?

You say you're restoring the boat. Perhaps the prop you picked up was RH pitch vs. LH Pitch? or vice versa.
Both will fit, but would give you the results you have now.
 

jlinder

Lieutenant Junior Grade
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Jul 5, 2004
Messages
1,086
Re: reverse/forward backwards?? prop spins wrong way!?

Still waiting to hear the make and model
 

wire2

Lieutenant Commander
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Jun 25, 2007
Messages
1,584
Re: reverse/forward backwards?? prop spins wrong way!?

Still waiting to hear the make and model
Post #6 above, "the make is a
92 renken inboard stern drive 175 omc"

Emase, if you turn your prop by hand clockwise, does it look as if it would drive the boat forward?
 

Bt Doctur

Supreme Mariner
Joined
Aug 29, 2004
Messages
19,344
Re: reverse/forward backwards?? prop spins wrong way!?

Could be a reverse rotation motor, define the rewiring part.
If the drive is electric shift , the wires could get reversed.
 

Don S

Honorary Moderator Emeritus
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Re: reverse/forward backwards?? prop spins wrong way!?

IF it's a 92, it's a Cobra outdrive (NOT electric shift) and even for the 5.0L Ford it was more than 175 hp.
Where are you getting the information from? If this boat is a 175, it most likely means it's 17 and a half feet long, not 175hp.
Have you changed props since this problem occured?
 

aerwin

Petty Officer 2nd Class
Joined
Mar 28, 2002
Messages
192
Re: reverse/forward backwards?? prop spins wrong way!?

is this boat new to you? or did it ever work right? not for sure but the ford 302 might be 175 hp, the chevy 305 is 185 hp. if this was a cobra like the post says then there is nothing electric that controls the direction. did you have any work done to it? if the drive was removed it is possible the shift cable was hooked up backwards or installed wrong. we need alot more info to help you. I realize you don't know much about boats but its time to get educated on your drive system
 

Gary H NC

Fleet Admiral
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Dec 1, 2005
Messages
8,972
Re: reverse/forward backwards?? prop spins wrong way!?

On the Cobra its possible the control cable is hooked up wrong or somehow he has the lower cable linkage wrong on the engine bracket.
The reverse prop is a good question also.
We need more info for sure......:rolleyes:
It would be nice to know did it work before or has everything been taken apart?
 

EmaSe

Cadet
Joined
Sep 20, 2006
Messages
7
Re: reverse/forward backwards?? prop spins wrong way!?

Yeah the boat is new to me but it does look like someone has tinkered with it here and there.. someone gave it to the previous owner and he said it worked fine for him. the throttle lever only has 1 plug and then the throttle cable which is wrapped around the boat onto the engine.. either way i pull the throttle lever it looks like the throttle cable pulls the same way.. the connection on the engine where the cable leads to doesnt open in the opposite direction so its connected correctly.. i tried to open the mechanism but i cant seem to figure out what makes it decide to go foreward or backwards.. there doesnt seem to be anything else mechanical that would change the direction of the prop spinning..

i have never had any work done to the boat and i have never taken it into any shops.. im kinda just winging it here and trying to figure everything out the hard way i guess hahah...

it says omc 175 on the valve cover so im assuming thats what it is..

the propeller is in the right direction it spins clockwise to push forward it looks like its still the same prop thats been on it since it was made..
is there anyway to tell the difference between rh and lh pitch ?
 

EmaSe

Cadet
Joined
Sep 20, 2006
Messages
7
Re: reverse/forward backwards?? prop spins wrong way!?

are there multiple ways to hook up the control cable??
 

wire2

Lieutenant Commander
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Jun 25, 2007
Messages
1,584
Re: reverse/forward backwards?? prop spins wrong way!?

The throttle cable going the same way fwd or rev is normal, you need to have the carb open the butterflies the same way for both.

Look back to your helm control, there should be a second cable coming from it for shifting only.

Looking at front of engine, does it turn clockwise when running?

The clockwise-forward prop you described is a RH, CCW-forward would be left hand.
 

MikDee

Banned
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Jun 6, 2007
Messages
4,745
Re: reverse/forward backwards?? prop spins wrong way!?

Had to jump in here, a Right Hand prop is normal for most boats. If you take a close look at a common wood screw, you'll see it is made to go into the wood in a clockwise direction, a Right Hand prop looks like a large version of a wood screw. A Left Hand prop would look the opposite, unlike the looks of a wood screw. Let us know what you find,so we can establish a base line here.
 
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