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I have a 96 mxz 583 that I recently bought. This is the problem. When I try to start it, I prime it until I see gas go the carbs, but it easily floods. After getting it started, it runs fine. As soon as I shut it off, it won't start again. I've even tried shutting it off and immediately trying to start it again and no luck. I have to remove the spark plugs, pull the cord ten or so times, put different plugs back in and it will then start. I don't use new plugs everytime either. They're usually the plugs I have removed the previous time. I thought I heard someone say once that the plugs may have to be gapped differently, but I'm not sure. Any help would be much appreciated. Thanks.
 

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I have a 96 mxz 583 that I recently bought. This is the problem. When I try to start it, I prime it until I see gas go the carbs, but it easily floods. After getting it started, it runs fine. As soon as I shut it off, it won't start again. I've even tried shutting it off and immediately trying to start it again and no luck. I have to remove the spark plugs, pull the cord ten or so times, put different plugs back in and it will then start. I don't use new plugs everytime either. They're usually the plugs I have removed the previous time. I thought I heard someone say once that the plugs may have to be gapped differently, but I'm not sure. Any help would be much appreciated. Thanks.[/b]
Sticky float or seat, my mxz670 is .016/.018 had it at .030 got bad gas mileage, (50 miles to 10 gallons,gap plug at .016 now I can go 100 miles) my mxz was tricky to start till i learned only use primmer to start it,, one two meny squrits will flood it. sounds like your float sticking I would say something is dumping gas.(also depends on witch way the wind is blowing with a ski doo He Haw) Crash dummy
 

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My guess is the needle and seat assembly in the carbs is either gummed up or worn out..The floats don't normally go out of adjustment on their own but the needles do wear out over time and cause a bad flooding problem.
 

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What colour are the plugs?
Does it smoke?
Is it abnormally oily?
Have you checked to make sure both plugs are getting spark?
Stock gap is .016-.018

Start simple.
Check to make sure you have good spark first and foremost.

I just went through something similiar to you, except for me i was initially just losing my top rpm's... cleaned the rave's, clutches (thats what seems to be the first thing everyone suggests without even looking at it... damn mechanics), pulled all the fuel lines checking for blockages etc. etc. etc.

I had spark at idle. And up to about 6000rpm. Coil didn't have enough juice after that and would only fire one cylinder. No one noticed it riding, it was odd, it still felt smooth, it just died off, everyone thought it was a carb issue. It's why my sled would only run with a .030 gap as well. I didn't notice until the coil went completely and the sled would no longer start, it would run for a few minutes, then stall itself out then not start again and flood. I haven't taken it out yet to test it with the new coil but it seems to make perfect sense and im very optimistic that i'll have a fast sled again.

With the plugs out and wires still attached check for spark... put your tongue on the tip of the sparkplug while someone pulls.. .. haha no dont, use a rubber ended hammer or something to hold the side of the plug against either the head bolts or the threads for the plugs while someone pulls(painted head = no electrical contact... damn ski doo)
Check both plugs, i didnt notice mine until the coil got significantly worst but its always a good idea to check. A new coil is only 36.99 through royal distributing... 158.99 through the bombardier dealership :lol:
 
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