Simplicity 860 - Snowblower Forum : Snow Blower Forums
 
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post #1 of 8 Old 12-18-2013, 03:52 PM Thread Starter
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Simplicity 860

WOW am I impressed with this machine. It is a horse!!

I do have a question about how the engine runs. When It is all warmed up and not under load it doesn't run smooth, it surges. When under loada and I have yet to find a way to lug it down.

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DRagan
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post #2 of 8 Old 12-18-2013, 04:32 PM
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Welcome to the forum dragan and congrats on your new "horse".. I'm not much of an engine guy, but we have a ton of those here. One of them will be along to answer your questions directly.


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post #3 of 8 Old 12-18-2013, 04:51 PM Thread Starter
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Thank you for the welcome and looking forward discussing the simplicity
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post #4 of 8 Old 12-18-2013, 04:58 PM
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If you let it warm up and then put the choke on slowly, does she flatten out and stop surging? If so, you may have an obstruction/minor blockage in the carb which is making it run lean. A good carb cleaning may fix it right up. I am sure others may chime in...
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post #5 of 8 Old 12-18-2013, 05:28 PM Thread Starter
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Actually have to turn choke off soon after starting or it runs rough

Last edited by dragan; 12-18-2013 at 06:21 PM.
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post #6 of 8 Old 12-18-2013, 07:13 PM
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Might try 1/8 turn on the high idle needle, to richen the mixture.

Garage:
MTD....2 stage(modern 8.5 HP) not my favorite
Honda HS622 TA-B - acquired at an auction- nice machine for it's size.
Toro S-140- Picked it up on trash day... it runs, sort of.
Yamaha YS 240 TB "Ricky" latest Craigslist find- on the bench now.
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post #7 of 8 Old 12-19-2013, 09:39 AM Thread Starter
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One more item and I hope the adjustment suggested above will fix. Doesn't want to stay running at lower speed adjustment. I am thinking the carburetor needs cleaned. Is there an additive that will clean out any build up from the machine sitting for extended period?

Thanks for your expertise.
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post #8 of 8 Old 02-26-2014, 07:55 AM
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try runng a liquid carb cleaner ou it in he gas tank with fesh gas and et it run should elp i have done this many times with ot tearing dwn the carb
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