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Discussion Starter · #1 ·
I just bought a 1998 Polaris Ultra SPX 680 cc, 3-cyl., 3-carb. While initially accelerating to a specific speed the machine performs like expected. However, when I reach a desired speed (anything over 30 mph) and try to accelerate the sled will not go faster. It will hold the same speed even if I crack the throttle wide open. If I take the sled from a stop and hit it, the machine will go 0-95 like it’s supposed to. Only when I let off the throttle once I’ve reached my desired speed for the time it will refuse to go faster. So for example I accelerate on the trail to 45 mph and find a straight away and wish to go faster the sled will not go, I must stop (or slow below 30) and re-accelerate. Any idea what the problem is? The carbs are as clean as the day the came out of the factory. That was my only thought. Please help!!
 

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Discussion Starter · #2 ·
I have subsequently been told that there may be a problem with my secondary clutch. Does this sound right? What should I look for when I have the secondary disassembled?
 

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if you go to open the secondary clutch,like you are changing your belt,the inner sheve should have resistance on it when you try to rotate it.something like 13-15 lbs of pull to start to rotate the inner sheve open.this is for trail riding.this will tell you if your spring is shot or just needs to be tightened.
 

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I just bought a 1998 indy 500 and today I had a chance to take it out on my friend's farm. My sled has the same problem. I'm going to try the secondary tomorrow.
 
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