no spark Robin engine


Old 03-12-08, 10:32 AM
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no spark Robin engine

Someone out there help me. Robin EH18V lawnmower engine will not fire. This is the following that has been done. New plug-no fire. New coil-no fire. Pulled flywheel and key is fine. All safety wires disconnected. I am not a novice at this but this has got me stumped. Please help.
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Old 03-12-08, 05:16 PM
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Well, This is pretty much a cut and dried ignition system.

When you say all safety wires disconnected did you leave the kill wire off the coil ? The kill wire is held to the engine block with a small clamp that could be shorted out.

Did you set coil to flywheel magnet air gap at 0.012"-0.014" ?

I have heard of flywheel magnets getting weak but have never ran across one, Will the blade of a screwdriver stick to it fairly well ?

Also, I checked the service manual for coil resistance/test specs. but none were listed. There is a chance you got a new defective coil. ?

Old 03-12-08, 06:08 PM
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Are you grounding the spark plug body while checking for spark? Hate to ask, but you know.....
Old 03-12-08, 06:36 PM
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I am not sure it's even possible to do this on a Robin engine, but many engines if the module is installed upside down that could cause a no spark situation.

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