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post #1 of 6 (permalink) Old 06-22-2019, 04:39 PM Thread Starter
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Honda HRS21 Help

I picked up a Honda HRS21 push mower and it had no spark. I checked the old coil and it was bad. A replacement coil is NLA. The mower has a GXV110 engine. I found a aftermarket coil on eBay that was advertised to fit a GXV110 engine, along with others. The coil is different but would bolt up and I had to install a longer plug wire. I installed the coil and a new auto lite spark plug that matched the old one. I then checked for spark and appeared to be weak. I could put a little gas in the carburetor throat and after about 30 pulls it would finally fire on the gas. I then told the seller of the coil that I had weak spark. They sent me another one and now I have no spark. What is wrong here? Please help, it is being very aggravating.


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post #2 of 6 (permalink) Old 06-24-2019, 01:01 PM
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Sounds like the aftermarket coil is a defective product since the first one gave you weak spark and the replacement was a total dud. The only other thing off the top of my head that it could be would be damage to the flywheel magnets.

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post #3 of 6 (permalink) Old 06-24-2019, 08:27 PM Thread Starter
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I put a screwdriver on top of the coil with the magnets under the coil and it pulled the screwdriver to the magnets. Is there anything else on the magnets I should check? The aftermarket looks different than the oem coil but it bolts up. If I get a better brand of aftermarket coil will it be better? I canít use a oem coil because they have a non replaceable wire. The oem coil that fits my mower is NLA.


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post #4 of 6 (permalink) Old 06-25-2019, 08:24 PM
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Quote:
Originally Posted by brandonstclair20 View Post
The oem coil that fits my mower is NLA.
I believe the OEM coil is 30500-ZE5-013, correct?

This would likely work: https://www.walmart.com/ip/FITS-HOND...V200/518631365

Did you check your flywheel key? If it's sheared even a tiny bit, timing will be off.

Last edited by tabora; 06-25-2019 at 08:41 PM.
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post #5 of 6 (permalink) Old 06-26-2019, 08:06 AM Thread Starter
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Quote:
Originally Posted by tabora View Post
I believe the OEM coil is 30500-ZE5-013, correct?

This would likely work: https://www.walmart.com/ip/FITS-HOND...V200/518631365

Did you check your flywheel key? If it's sheared even a tiny bit, timing will be off.


Thanks, but that is the same coil I tried. I will definitely check the key, but my issue is weak/no spark.


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post #6 of 6 (permalink) Old 06-26-2019, 01:10 PM
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Quote:
Originally Posted by brandonstclair20 View Post
Thanks, but that is the same coil I tried. I will definitely check the key, but my issue is weak/no spark.
You definitely purchased the Auto Express brand, and through Walmart?

In any case, check the key (which determines spark timing), and also try reinstalling the coil so that it's right up against the flywheel, then hand rotate the engine until the coil "rubbing" on the flywheel wears in a tight fit. Then see if you get a sufficient spark. That's what was necessary on my GXV120.
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