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New Superwinch 3000. Used to raise snow blade and when I went to lower blade the engine on my 570 guit ! I had run winch in and out several times prior without load on. I am thinking contactor? Any suggestions ?
 

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Not necessarily.
Winch needs a LOT of power to run - more than the ACE can put out. So it runs from battery.
Stock battery in ACE is not designed for that kind of load.

Fuel injection needs power to keep the ACE running.
When battery is very low, the EFI might hiccup.

Doesn't make sense that it happened while you were LOWERING the winch, but I dunno.
If it happens again, grab a voltmeter and see where your battery is at.
 

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Scoundrel is on to something there. If you can replicate the issue, then you can test his theory using a larger battery hooked up to winch.
 
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