2012 stopped running out of nowhere. - HCS Snowmobile Forums

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Old 01-16-2020, 03:54 PM   #1 (permalink)
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Default 2012 stopped running out of nowhere.

Hello folks, I have a 2012 Polaris assault 800 that was running perfectly two days ago. I got on it today and wrote it for 5 minutes and it just died. Plenty of fuel in the tank. Seems maybe like a throttle issue. It will run for half a second every now and then while I'm pulling it over. But most of the time it won't even stutter at all! I do not know what it could be seeing as it was running and then all the sudden it just wasn't... as if I hit the kill switch. I tried unplugging the main connection from the hood and it made no difference. I also tried to unplug the tether and it made no difference either. There is no ice in the TSS area.
Anyone know of simple stuff to check?

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Old 01-16-2020, 05:32 PM   #2 (permalink)
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Check your FAST first - Fuel, Air, Spark, Timing. Does it start with fuel poured into the cylinder? Good spark? Good compression?
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Old 01-16-2020, 06:52 PM   #3 (permalink)
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Current Sled(s): '12 SBA, '12 RMK600, '11 SBA
Previous Sled(s): 1999 Polaris SKS 700
Location: Northern Minnesota
Favorite Riding Area: Northern MN, UP Michigan
19-20 Mileage:
18-19 Mileage: 800

Fuel pump and filter need to be checked
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Old 01-18-2020, 07:58 PM   #4 (permalink)
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Current Sled(s): Waiting...
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Throttle safety issue. Have you adjusted cable slack recently? Might try loosening it a bit.
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Old 01-20-2020, 10:56 PM   #5 (permalink)
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Mine did that when it melted the 4 wire connector from the stator. It is a common problem. It's in the bag under the hood by the steering post.

I would check for spark, if good, put a little fuel down the spark plug hole. If it fires and dies you know its a fuel delivery problem. Fuel pump, filter, or power to the fuel pump.

The fuel pump won't get power if the stator is bad, Voltage regulator is bad, or wire connection is melted, stator to voltage regulator.
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Old 01-20-2020, 11:18 PM   #6 (permalink)
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Current Sled(s): 2012 800 iqr,13 800 sb,fusion 900 triple
Previous Sled(s): pro-x/xcr 800 engine,xc 800 triple,storms,ultras,650s,
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Favorite Riding Area: western U.P/northern WI
Age: 42
Riding Since: 1974

sounds like your stator died
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