LH compared to RH differences

bakerjw

Petty Officer 1st Class
Joined
Apr 3, 2013
Messages
288
What is the difference between a later model Evinrude LH outboard and a RH outboard?
Do the power heads run the same direction or is it a difference in shifting in the lower unit? i.e. One motor uses the front gear while the other uses the rear gear.

My local dealer set me up with a wrong prop. I needed LH and they got me RH or vice versa. When I tried to pull off the trailer in reverse the boat pushed forward, so I put it in forward and pulled off the trailer. Since I was already in the water, I went ahead and went out on the lake. I throttled up and there was no vibration. I figure that even though I was in the reverse gear, the force of the prop would be trying to push itself into the lower housing rather than trying to pull itself out. I could see problems running full throttle in reverse, the prop would be trying to pull itself out of the housing.

Down in the internals, the power shaft typically connects to the forward and reverse gears that freely spin on the prop shaft. Power is transferred by a piece that slides on the prop shaft and engages either the forward or reverse gear. Once engaged, the only place for major stress is the housing that holds the rear gear. Is that correct?

The end question is, will running this wrong prop in reverse hurt my outboard? It might take them another 2 weeks to get the right prop and I'd hate to be down for that long.
 
Last edited:

Xcusme

Commander
Joined
Apr 21, 2003
Messages
2,888
Re: LH compared to RH differences

Hmmm....The only thing that would bother ME is, the reverse gear would have an RPM restriction ( that you should NOT remove). Other than that , no , it should't be a problem. But , I would get the right prop on your motor, ASAP.
 

boobie

Supreme Mariner
Joined
Nov 5, 2009
Messages
20,826
Re: LH compared to RH differences

Get the correct prop. If they were meant to be run in either direction, OMC would have designed them that way.
 

multimech

Petty Officer 1st Class
Joined
Apr 26, 2012
Messages
386
Re: LH compared to RH differences

The reverse gear cannot handle the load, because it doesn't have the bearings to take that kind of a load. The propshaft will be grinding against the forward gear if you go with reverse as forward. It will chew up your gearcase very quickly.

DONT DO IT even for a short amount of time. Get the right prop ASAP or it will cost you dearly.
 

emdsapmgr

Supreme Mariner
Joined
Dec 9, 2005
Messages
11,551
Re: LH compared to RH differences

multimech is correct. The engine is designed to handle the forward thrust of the engine when in forward only. When shifting into reverse, the throttle is normally setup to provide only limited power and limited rpm's, which is fine for running backwards. You will damage the lower unit internals if you continue running forward in reverse.
 
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