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So a guy brought to me an old snapper i433. All the base bolts on it had shaken loose and there is no spark.

I took off the flywheel cover and flywheel. Flywheel key isnt sheared and I disconnected all grounding. Things are covered in surface rust but not awful. I cleaned everything up as best I could, reinstalled and still no spark.

Is there a good way to test the coil or the flywheel?

(Next to john deere)

Thanks!


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:moved:

:welcome: to SBF gusbuscycle
I moved your post to Maintenance since it's a general question about the engine and you might get more responses here.

Can you post the numbers off the engine please ??
When you mentioned cleaning everything up as best you could did you lightly sand the surface of the flywheel magnet and the face of the coil ??

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That is most likely a points engine, so what you must do is strip off the flywheel cover, remove flywheel, take off the points cover, take a strip of emory cloth and fold it double so both sides have grit, and polish the points......reassemble and try it.....if no spark, repeat.
 

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Discussion Starter #4
:moved:



:welcome: to SBF gusbuscycle

I moved your post to Maintenance since it's a general question about the engine and you might get more responses here.



Can you post the numbers off the engine please ??

When you mentioned cleaning everything up as best you could did you lightly sand the surface of the flywheel magnet and the face of the coil ??



.
I did yes.

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Discussion Starter #5
That is most likely a points engine, so what you must do is strip off the flywheel cover, remove flywheel, take off the points cover, take a strip of emory cloth and fold it double so both sides have grit, and polish the points......reassemble and try it.....if no spark, repeat.
That's the strange thing...it doesnt appear to have points.

The magnets are on the outside of the wheel which is new to me, and the coil sits above the flywheel. The style of the coil is pictured. Not exact but darn close. It looks like you can adjust the coil closet and farther from the top of the flywheel.

https://goo.gl/images/brVkFx

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Well then it is an electronic engine...my bad. If you disconnected the ground wire from the coil and no spark, then I would guess the coil is bad. I know there is a way to test them with an ohm meter, but I have never done one. I can't think of anything else unless the flywheel lost magnetism....and you can check that easily.
 

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Discussion Starter #7
Well then it is an electronic engine...my bad. If you disconnected the ground wire from the coil and no spark, then I would guess the coil is bad. I know there is a way to test them with an ohm meter, but I have never done one. I can't think of anything else unless the flywheel lost magnetism....and you can check that easily.
Anyone know where I can get a parts number list to attempt to find a replacement

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Look on your engine housing and get the Model # and Serial # for the engine . you can also get the model # and serial # for the blower on the chassis tag or stamp. But the engine #s a more important for engine related components.
If you post those #s then we will know exactly what you have , the size and what is or is not on your particular engine, including if it has points or not , type of coil, etc, and as well determine what part #s or list to reference.
 

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That's the model number of the snowblower, not the engine. The engine numbers are either engraved on top of the flywheel housing or a sticker on the side.
 

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This looks darn close....

Close only counts in horseshoes and hand grenades. :nerd:


There are numbers stamped into the top of the pull start shroud right in front of the spark plug. Without those numbers you will be guessing for any future parts you may need. I don't know for sure, but I don't "think" the coil you ordered is correct (I hope it is).


Use a business card between the coil and flywheel magnet to get the correct air gap.
 
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