200HP Ev not starting.

[ondarvr]

Now I get to ask a question.

76' 200 Evinrude, good comp, bright blue crisp spark, getting fuel, never had a problem starting it before.

I started it for the first time since last August, as normal it started very easily on muffs. I ran it for a few minutes, then it started to run rough, died and wouldn't restart. It's getting fuel and great spark, fresh fuel from a clean portable tank. If I go through the normal start procedure, it appears to fire on the up stroke and will stop the starter motor, I did get it to backfire though the prop a few times, but nothing more. I've checked all of the normal things and everything seems correct, except maybe the timing, can't tell though. I haven't checked the flywheel key yet, but at the end of last year, I was checking the timing (it was correct) and noticed that it may have been double firing some times. Can the power pack go bad and still have excellent spark, just be out of time?

Any other suggestions?

Thanks

 

[Joe Reeves]

Re: 200HP Ev not starting.

Backfiring thru the propeller can only be caused by two things. Either the spark plug wires are crossed which is unlikely since you say that you did have it running...... OR.......

You or someong else has had the flywheel off and did not torque it down to factory specifications. This wouold result in a sheared flywheel key which effectively throws the engine out of time.

Remove the flywheel to insspect/replace that key. If it has sheared, be sure to clean up the tapers of the crankshaft and flywheel first. Install the key so that the outer edge is straight up and down with the engine, NOT aligned with the crankshaft taper.

Torque the flywheel nut to 145 foot pounds.

 

[ondarvr]

Re: 200HP Ev not starting.

Thanks

I've had it for about 3 years and have never had it off, I looked at the nut and it has been removed at some time though. I'll take it off today and check it. I do have a complete power head for a 79' 175 to rob parts from if needed.

I'll post what I find.

 

[ondarvr]

Re: 200HP Ev not starting.

Thanks Joe, you were correct.


As suspected it was the fly wheel key, I cleaned everything up and had one that matched in the parts bin, so I was able to put it back together right away. It started and ran perfectly.

It looks like I'll need a new stator though, this one had some small cracks and was starting to leak, it still works, but... I have 15 or 20 in a box but none of them matched up exactly.

What years might match up with what I have?

Thanks again.

 

[ondarvr]

Re: 200HP Ev not starting.

I found my answer to which years fit.

I was very lucky to have it fail while idling in the drive way, I only have about 20 or 30 minutes on it after getting back from a long trip off the west coast of Vancouver Island (Canada) fishing. It's an 18 mile run out to where I was at and there's no place to get help near that part of the Island.