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Old 02-15-2011, 03:24 PM
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2000 Polaris Xplorer

This is my first machine and two weeks into having it, i had it apart in my garage putting on a new piston and rings. it runs now and has good compression (about 120psi), however 10min into running it, it seems down on power. i need help! its a 2000 polaris xplorer 250 two-stroke.

All help would be greatly Apperciated!
Thanks!

Last edited by ajmicek; 02-15-2011 at 03:30 PM.
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Old 02-15-2011, 05:47 PM
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Did you rebuild the carb?
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Old 02-15-2011, 06:09 PM
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when i rebuilt my 2000 400 i ran double oil the first tank. just added a couple onces per gallon in the tank. is your oiler working? is the compression still good? did it get hot, is it full of antifreeze?
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Old 02-15-2011, 09:08 PM
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Welcome to the board!
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Old 02-16-2011, 08:27 AM
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@Randygpolaris It is air cooled, so it doesnt have antifreeze. And the oil pump works. no i haven't rebuilt the carb, it sems to be working fine. and im running Stihl 2 stroke premium oil (the kind i use in my trimmers and backpack blowers).
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Old 02-16-2011, 04:32 PM
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I feel your eagerness on rebuilding your ride welcome aboard.
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Old 02-16-2011, 05:11 PM
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welcome to the board!
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Old 02-18-2011, 03:22 PM
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thanks for making me feel welcome! so the day after i finally got it running, i went to start it up again and the pull cord was stuck. it felt like the piston was somewhat hydro-locked. so i took out the spark plug. nothing. so i took off the head. no movement still. i took the jug out and was back down to the piston and the crankshaft still wouldnt turn. so i took off the clutch gaurd and turned the clutch and fianlly it broke free of what it was held up on. so after i put it back together it ran good. now, however, the same thing happened. the pull cord wont budge. could this be the result of bad crankshaft bearings?
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Old 04-01-2011, 08:25 AM
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what was the reason for changing the piston?
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Old 04-02-2011, 06:18 PM
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sounds like the rod bearing and or the crank bearings could be a possibility. my rod bearing went out and it locked up, sounded like it ran out of gas. when yours quit, after you removed the jug would the rod & piston move freely on the crank ? if so, i would take a closer look at the crank bearings. you definately have a major problem some where. good luck and keep us posted.
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