Setting the spark advance for a 1976 35 HP

[joelmash]

Looking for a little guidance in setting the timing and or spark advance on a 1976 35 HP Evinrude.
I have replaced the points and gap them .020. when i tried to start it I got a back fire. So my guess is my timing it retarded a little.

 

[Crosbyman]

wires crossed on plugs ??

 

[joelmash]

No and i have fire on both plugs.

 

[racerone]

Sure sounds like wires are crossed.----How did the motor run for you last season ?

 

[joelmash]

Just had the motor given to me. It had a bad coil on cylinder #2. I change the plugs. Rebuilt the carburetor and fuel pump. Replace bad vacuum and gas lines. Could I may be putting the throttle in the wrong place when starting? I don't have the remote cables hooked up to the motor.
I will go back tonight double check the plug wires with an ohm meter.

 

[racerone]

So you were given a motor that somebody gave up on ?---Does spark jump a gap of 5/16" or more , yes or no?------Perhaps wires from magneto plate to the coils are swapped.-----This should be an easy fix.

 

[joelmash]

OK, let me double check that tonight.

 

[racerone]

I would not be doing anything to timing without a proper manual.

 

[joelmash]

I would rather not mess with the time, but if the plug wires are not crossed and i don't think they are. That would only leave a timing issue. causing it to back fire and not start.
I have a SELOC book on the motor.

 

[racerone]

It would be very unusual for timing to be out of adjustment.-----But you can check the timing using the timing marks on the flywheel and magneto plate.----Motor does not need to run to use those marks !!-----Yes there are timing marks.

 

[joelmash]

And what am I look for or how do i verify the marks line up? I know then is a mark or 2 lines on the armature plate and time marks on the fly wheel.

 

[Crosbyman]

typical old style magneto timing with points not yours 100% but that is how it is done

 

[saltchuckmatt]

I would rather not mess with the time, but if the plug wires are not crossed and i don't think they are. That would only leave a timing issue. causing it to back fire and not start.
I have a SELOC book on the motor.

I think coils are hooked up wrong....switch plug wires and I bet it fires up.

 

[Crosbyman]

easy enough to test isn't it ?

 

[joelmash]

Ok double checked with an ohm meter and the wires were crossed. The other think I discovered is the remote cables need to be attached so the throttle is in the right position when starting. When doing that is fire over. Thanks again

 

[Crosbyman]

happy ending.... thanks for your feedback

 

[racerone]

Once again the early diagnosis by folks here was CORRECT.

 

[saltchuckmatt]

Ok double checked with an ohm meter and the wires were crossed. The other think I discovered is the remote cables need to be attached so the throttle is in the right position when starting. When doing that is fire over. Thanks again

How much did we bet? I'll take my winnings and share it with Crosby!

 

[joelmash]

It cranks in full throttle and then dies. any ideas. I rebuild the carb and full pump,