064 coil problem

[Chris Prestianni]

 

[L34]

That looks pretty close to mine,agree?

 

[L34]

Is the plug wet after you try to start it?

 

[Chris Prestianni]

Yeh close but not right i dont think. Your coil lines up with the fin but mine lines up with the rivit. I think my saw will be firing before the piston gets to TDC, so it will not start.

 

[Chris Prestianni]

Yeh it's wet, i dont think that fuel is a problem.

 

[L34]

If it is firing?? before tdc it should pull the rope out of your hand.This makes me think it is not firing at all,thats why I asked about the wet plug.You have my # if you want to give me a call 2moro.Remove the key and set it up exactly as mine and see how you go.Iam out of ideas atm.

 

[Chris Prestianni]

Yes I agree with you but after thinking about it, it is actually firing before top dead center with out the compression so nothing is happening. I just don't understand why ?, it ran when I bought it.

 

[L34]

Looking at your pic not much before tdc.That's why i thought rope pull.
But I understand no comp no fire if piston too far down bore.
I would remove carb and put fuel straight down manifold to eliminate severe flooding problem on start up.

 

[L34]

I have done 8-10 tests on mixing and matching wheel/coil on 064/066 and every time it was wrong it would pull the rope from my hands.

 

[Chris Prestianni]

I will try taking the carb off and see what happens. I am waiting on a flywheel puller to arrive and then I will try without the key and see what happens.

 

[L34]

OK Chris.

 

[L34]

BUMP

 

[Chris Prestianni]

Well once again this thing has me stumped, put fuel straight into it and nothing happened. Pulled the flywheel removed the key and set the coil pickup to the center of the second magnet on the flywheel at TDC. Pulled the cord and it poped first pull !, I've been trying to start it for the last 2 hr and have got nothing not even another pop.

 

[Chris Prestianni]

 

[Chris Prestianni]

That's TDC

 

[L34]

Coil gap looks small or is it just the photo?
Are you trying it with kill switch wire removed?
I am all but out of of ideas Chris.
Are you running out of swear words to use?

 

[L34]

Could be a fly wheel problem but I believe you said earlier magnets are OK.

 

[Chris Prestianni]

Coil gap is 10-12 thou, kill switch is connected with a strong blue spark, the magnets feel strong. I was going to try a 066 flywheel but it doesn't fit. I'm thinking that maybe it's a timing issue but I don't know why it would be out !, with the key removed i have tried the flywheel in a few positions and I have got the saw to go from pushing the fuel back out of the carb, then almost starting, and then back firing out of the carb !, how fussy is the timing on these saws ?

 

[L34]

Not sure on timing,as I said I have rope pull problems if timing out too far.
I think we need someone smarter than me (which wouldn't be be hard) to chime in on this thread.
What 066 wheel do you have,early alloy one?

 

[Chris Prestianni]

Yeh it's alloy but it hits on the crankcase before it locates on the shaft.