mower won't start

bhealthy

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How do I set timing on js63c engine. It backfired in the past but only on start up. Now there is no firing but spark plug is clean and dry.
 

scott47429

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you say there is no spark now did i understand you right and as far a setting the timing there is a key way in the crankshaft on the top side there is a key that keeps the flywheel and crankshaft in time but if you have no spark timing probably isn't the issue
 

Muddin mower 88

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The coil might be bad.thats what it sounds like to me has It got wet by oil or any thing?
 

bhealthy

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You may just be right. where would you start to check the problem. I took off the carburetor and cleaned it. It did not seem to be dirty. Also I do not have the manual for the John Deere self-propelled mower. This is my firt attempt at working on an engine
 

bhealthy

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Hi guys
I want to thank you for your answers and am grateful for this forum. I had many other more pressing things to do but finally got around to fixing the mower. The yard now looks groomed. 
Muddin thought it might be the armature and you may have been right. I bought a new armature and asked the service rep about setting the timing. He confirmed scott痴 answer that it is the key-way. The flywheel was tuned about 100 past its position.
The nut came off without difficulty but the flywheel was another matter. No matter what I did, it did not budge. I watched some videos and none of that worked for me. I finally made my own tool.

I had a 1シ by 5/8 steel bar. I cut an 8 length and then drilled 3 5/16 th holes 3/4 apart. The holes that I had to tap on the flywheel are 1ス apart. I tapped the center hole for a 3/8 th bolt. Next I fastened the bar to the flywheel with シ inch bolts and the used a 3/8 bolt to start pulling on the flywheel. With a little prayer it finally came off.
Last time it cost me $300 to get the mower working. This time it only cost 60 bucks for a new armature and and a little effort.
Thanks again for your valuable suggestions.
 
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