1973 Areins refurb - engine won't start - Snowblower Forum : Snow Blower Forums
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post #1 of 13 Old 10-14-2015, 08:21 PM Thread Starter
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1973 Areins refurb - engine won't start

Hoping for some help here.
I just bought an Ariens 10995 model with the 8HP Tecumseh HM80-155020 for 50 bucks. The tractor looks great, but everything else needs work. I'm trying to get some spark. I've pulled the flywheel and cleaned up the coil and inside the flywheel of rust with sandpaper, put it all back together - still no spark.
1. Is there a way to adjust the gap?
2. Do I just need a new coil?
3. Any other ideas?
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post #2 of 13 Old 10-14-2015, 08:41 PM
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May sound stupid but did you check with a known working spark plug.
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post #3 of 13 Old 10-14-2015, 08:44 PM
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did you clean the points?
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post #4 of 13 Old 10-15-2015, 12:10 AM
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My 1975 has a lockout the motor won't start if the lever for the auger is engaged. just guessing here......

Ariens deluxe 28
Ariens 927le
ariens self propelled mower
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post #5 of 13 Old 10-15-2015, 05:48 AM
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With breaker point ignition engines that have been sitting, nine times out of ten, the points just need to be cleaned. A small emery board works good; but you have to follow with clean, dry, thin cardboard, to remove the grit from the point surfaces. Ideally, you would remove them from the engine and clean each face of the points. Either way, with the coil wire disconnected, you should be able to turn the engine over and, with an ohm meter connected between the point terminal and the engine block, see the meter fluctuate from infinity to ZERO, as the engine revolves. If there is even one ohm resistance with the points closed, you need to clean them some more.
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post #6 of 13 Old 11-09-2015, 10:35 PM Thread Starter
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Hi all,
I got it running after replacing the coil. It needs a carb rebuild/replace; two rubber rings are deteriorated and a tiny spring was in the bowl. I've searched this site and lots are suggesting the Chinese replacement carb - which I'd like to try before sinking $90 on the OEM part or the expensive rebuild kit. Problem is, I can't find the replacment for part 631660 (aka LME-49). Do you guys know if the part will fit if it just says it fits HM80/HM100? Like this one:
NEW CARBURETOR Carb HM80/HM100 for Tecumseh 640152/640023/640051/640140 US LOCAL

Or maybe someone knows the best cheap replacement?
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post #7 of 13 Old 11-09-2015, 11:00 PM
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I have used OEM if interested.
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post #8 of 13 Old 11-10-2015, 03:38 PM
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hm 80 replacement carb

I got one off amazon and it works great. It has all the screws you need to adjust. There are plenty of videos on how to adjust them and they are pretty straight forward. Just keep everything from the old carb. Some Machines you have to modify the choke lever but other then that they work fine.
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post #9 of 13 Old 11-10-2015, 04:46 PM
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I've had good luck with the Oregon branded carbs off of Amazon. I became a fan after after a failed carb rebuild project, which had more to due to my carb rebuild knowledge than anything else.

2001 Ariens 824(932101)
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post #10 of 13 Old 11-10-2015, 10:55 PM Thread Starter
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Thanks for the input guys, but my question is still unanswered. I have not found an aftermarket carb that lists 631660 as the part number it replaces. 631660 is listed in the manual as the part number for my year 1973 HM80-155020 engine. Do you guys know if the part will fit if the description states it fits HM80/HM100 but does not also indicate my part #?
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