What is it?

[tmatsoukas]

I am helping my stepson with this project. It is a 85 hp Erude V4 model 100293r ser J01983. any way to tell the year model so I can get a manual. and it is an electric shift and the netrual and reverse seem to work but I can't get forward to engage. TIA Tom

 

[JB]

Re: What is it?

Ahoy, Tom.<br /><br />Welcome to iboats. <br /><br />Model 100293 belongs to a 1972 Evinrude 100HP. Sounds like somone switched bonnets, which is fairly common.<br /><br />Can't help you with the gearshift problem beyond pointing out that FWD is engaged when both solenoids are released. One may be stuck.<br /><br />Good luck.

 

[Joe Reeves]

Re: What is it?

(Hydro Electric Shift)<br />(J. Reeves)<br /><br />The shifting setup of the lower unit is what's called a "Hydro Electric Shift", which is quite complex consisting of voltage being applied to solenoids in the lower unit which in turn change oil passages via a oil pump that supplies various pressure on a spring loaded shifter dog. The wires leading to the lower unit (at the powerhead) are "Green" and "Blue". The engine must be running or cranking over in order to shift out of forward gear.<br /> <br />You CAN NOT use HI VIS lube in that lower unit. You MUST USE what OMC calls "Preminum Blend" lube, commonly called "Type C". (A thinner lube) <br /><br />In neutral, you need 12v to the "Green" wire. <br />In reverse, you need 12v to both wires, the "Green" one and the "Blue" one. <br />In forward, there should be no voltage to either wire. (The spring loaded shifter dog forces the unit into forward gear) <br /><br />To check the lower unit for proper shifting to make sure you have no trouble there, remove the spark plugs to avoid problems and to allow a higher cranking speed. <br /><br />This next step eliminates the actual shift switch in case problems may exist there.... Disconnect the blue & green wires at the knife connectors (the rubber insulated boots) leading to the lower unit at the powerhead, then using jumpers, take voltage direct from the starter solenoid to apply voltage to the "Green" wire for neutral, then both wires 'Green" & "Blue" for reverse (Remember the engine must be cranking over in order to shift).<br /> <br />With no voltage applied, the unit should be in forward. No need for a ground jumper... the lower unit's already grounded. You may crank the engine with the key switch or by energizing the starter solenoid with a jumper wire.

 

[tmatsoukas]

Re: What is it?

Thanks to all for the input. The shifting is much better now, I found the sol ohms good at 6 each, and the shift buttons gave me the right volts, green and blue, So when I saw and bottle of the 'wrong ' foot lube in the boat I suspected the previous "macaniac" had filled it using that. I drained the foot and found the bottom screw had no washer gasket and the fluid was milky - no suprise there - flushed and refilled with Type c, - it took about 20 oz, is that close to capacity? - and a new gasket on the screw. On the river this afternoon, back after dark , so will have to wait till next week to check the foot and see if the gasket solved the milky fluid problem. Thanks again Tom

 

[tmatsoukas]

Re: What is it?

back from work and tinkering with the 72 100 hp e-rude, got the foot down and the shift wire was pulled out of the grommet going through the plate above the shift sol's. resealing that and getting ready to refill the foot, what is the capacity in ounces of that foot? my book doesn't say. I tried the fill it till it runs out the top, but the electric shift has a pump and that other stuff in there and it doesn't overflow like the other lower units I've worked on.