Selecshift

[Hoff069]

I have an evinrude 1964 40hp with electric shift model 40473s
I have never had an electric shift so new to this motor. I'm working on the timing,won't start. I've tested all wiring and it appears good, continuity wise. The prop won't spin in neutral is this normal?

 

[racerone]

The prop should spin freely in neutral , so something is wrong there !!-----Drain gear oil to see what you have in there.-----Do you have all the controls , junction box and generator ?-----Do a complete evaluation of this motor before spending any beer tokens on it.-----Do not worry about timing as it rarely is a problem on these simple ignitions / magnetos.----But do a compression test, post the numbers.----And does spark jump a gap of 1/4" or more ?.

 

[Hoff069]

The prop should spin freely in neutral , so something is wrong there !!-----Drain gear oil to see what you have in there.-----Do you have all the controls , junction box and generator ?-----Do a complete evaluation of this motor before spending any beer tokens on it.-----Do not worry about timing as it rarely is a problem on these simple ignitions / magnetos.----But do a compression test, post the numbers.----And does spark jump a gap of 1/4" or more ?.

Did compression test both cylinders tested 100. Motor currently apart to test mag system. There wasn't any spark. Removed flywheel found sheared key. Working on replacing flywheel with new used one with no damage to key slot. While it's open I'm putting in new parts. Will then test spark, etc. I drained lower unit oil. A little milky no seperate water. Old oil not the proper oil as was pretty heavy I think previous owner put in wrong oil. I asked the question because a boat mechanic told me the prop would not spin until motor was running. Thanks for helping me understand my situation

 

[Hoff069]

Did compression test both cylinders tested 100. Motor currently apart to test mag system. There wasn't any spark. Removed flywheel found sheared key. Working on replacing flywheel with new used one with no damage to key slot. While it's open I'm putting in new parts. Will then test spark, etc. I drained lower unit oil. A little milky no seperate water. Old oil not the proper oil as was pretty heavy I think previous owner put in wrong oil. I asked the question because a boat mechanic told me the prop would not spin until motor was running. Thanks for helping me understand my situation

Sorry I do have junction box all controls and all electric wires test for continuity. The safety switch doesn't have continuity when compressed or not lead to bottom plate. I put in new key switch, works to turn starter when safety switch grounded but not when hooked up to use the switch as designed.

 

[racerone]

Your boat mechanic is totally wrong on this electric shift !!!------In 1968 they came out with ---' Hydro-electric shift----on 55 HP motors.----On all the big motors from 1969 to 1972.-----And those do indeed go into forward when motor is not running.-----Your mechanic is confused on this , or perhaps you did not clearly spell out that yours is a 1964 model 40 HP.-----The hydro-electric shift was never offered on 40 HP models.

 

[racerone]

Correct that safety switch is NOT supposed to have continuity when depressed.-------It prevents cranking when depressed too far ( too much throttle ) and nothing is wrong with it.----Sounds like switch needs cleaning or adjusting.

 

[Hoff069]

Your boat mechanic is totally wrong on this electric shift !!!------In 1968 they came out with ---' Hydro-electric shift----on 55 HP motors.----On all the big motors from 1969 to 1972.-----And those do indeed go into forward when motor is not running.-----Your mechanic is confused on this , or perhaps you did not clearly spell out that yours is a 1964 model 40 HP.-----The hydro-electric shift was never offered on 40 HP models.

Thank you this clears up my understanding of the motor. I'm thinking I have lower unit issues if it will not spin in neutral or I'm not in neutral with the push button control. I have power to the shift switch and power to forward and reverse leads. Doesn't seem to change whither in forward or reverse prop Doesn't spin even if I step on the prop.

 

[Hoff069]

Correct that safety switch is NOT supposed to have continuity when depressed.-------It prevents cranking when depressed too far ( too much throttle ) and nothing is wrong with it.----Sounds like switch needs cleaning or adjusting.

I'll try cleaning it the best I can. It doesn't have continuity with the button in the full out position either. Ignition only works if I ground the solenoid wire to the motor.

 

[racerone]

Stop-----This switch prevents cranking with too much throttle applied.----It should have continuity to ground at idle or a little faster.-----Post picture of this switch.----I have cleaned many of those switches.----Simple job.----Note,---- 12 volts from battery is not used to make spark for the plugs either.----Investigate lower unit before spending any beer tokens.-----The sheared key may indicate that something failed / locked up the lower unit.----Your location ?

 

[Hoff069]

Stop-----This switch prevents cranking with too much throttle applied.----It should have continuity to ground at idle or a little faster.-----Post picture of this switch.----I have cleaned many of those switches.----Simple job.----Note,---- 12 volts from battery is not used to make spark for the plugs either.----Investigate lower unit before spending any beer tokens.-----The sheared key may indicate that something failed / locked up the lower unit.----Your location ?

 

[racerone]

That switch only needs ONE wire to it.----It has an internal ground.----That switch needs cleaning.----Very simple job !!

 

[Hoff069]

As you can see I grounded switch to get the key to activate the starter. Wire from solenoid to vacume switch then up to safety switch. Without ground starter didn't crank. with key sheared and flywheel out of place would this cause my problem? I'm in north east Kansas at council Grove lake

 

[racerone]

With 2 wires attached the switch does absolutely nothing.-----Might as well throw it on the shop floor.--- and put wire to ground.

 

[Hoff069]

That switch only needs ONE wire to it.----It has an internal ground.----That switch needs cleaning.----Very simple job !!

If you would please tell me how to clean. Thanks

 

[Hoff069]

With 2 wires attached the switch does absolutely nothing.-----Might as well throw it on the shop floor.--- and put wire to ground.

I understand by grounding the switch it bypasses the switch I did it to get the starter to activate not for running the motor. Trying to understand system with little knowledge and lots of time for winter project

 

[Crosbyman]

not certain here but if this is your engine. diagram may be useful

https://maxrules.com/graphics/omc/wiring/61_66_40HP.jpg

 

[Hoff069]

Thank you. Every piece helps me.

 

[Hoff069]

Thank you. Every piece helps me.

On my lower unit leads blue and green I'm getting an ohm reading of 7.9 resistance on both wires to the coils. Is this in range?

 

[racerone]

Could be your meter.----So it reads 7.9 ohms from green to ground for forward ?----And also 7.9 ohms blue to ground for reverse--Sounds about right.----Doubt you would have 2 bad ones.----And certainly not the reason for prop not turning.

 

[Hoff069]

Could be your meter.----So it reads 7.9 ohms from green to ground for forward ?----And also 7.9 ohms blue to ground for reverse--Sounds about right.----Doubt you would have 2 bad ones.----And certainly not the reason for prop not turning.

Thanks. With the flywheel off I can turn the crank shaft with a rachett, plugs out, a little rough but turns. Have 14 volts going back to both shift wires.