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in this thread, I want to discuss how 4-cycle atv engines work- what the different types are... how they are set up and which you prefer. To start off, are the cams on ALL atv 4-strokes powered by a cam chain? I know that on say a lawn mower or logsplitter engine, the cam is turned by the tappet, pushrods, and valve rockers. Which is better and why? Chain-driven cams or pushrod-driven cams? Are the pushrods just an old version and everything is transforming to chains or the other way around...or not at all? Just looking for some explanation, history, and downsides/upsides...
View File 2012-13 Polaris Sportsman 550 EPS X2 Service Manual
Full service manual
Submitter flyinbrian365 Submitted 02/15/2019 Category Polaris ATV
Hey I have a 97 bayou 300 2x4 (klf300b) that i bought for 1000 last June and sunk another 1000 into it already. When i went to look at it, the seller had warmed it up before hand (he was riding it when I got there). it ran good so i bought it and took it home that evening... next morning it wouldn't hardly start. I discovered the carb was clogged, there was chunks of rust in the fuel valve, the choke lever was missing and other things. I have since cleaned the carb and replaced the fuel valve and gas lines and cleaned out the gas tank and cap.
Enough background on it, the problem is this: It floods if i push it past half throttle in 4th and 5th gear even going downhill and shifting correctly. It also has to idle and warm up when you first start it which is really annoying now that its cold... It also smokes blue smoke for about 15 seconds when started cold- does not smoke at all once warm but the exhaust still smells like burnt metal. A friend told me that it didn't have enough compression. I also found out that the valves are a common cause for low compression on Kawasakis.. I have never adjusted valves before- the most I've ever got into a engine was a head gasket on a riding mower so I'm new to this. My goal is to get this bike running and starting cold like a top- should i tear down and rebuild the top end? What should i try first? I tore the carb apart and rebuilt it and fiddled with the air screw and nothing changed. I also ordered a compression test kit that should be coming in soon.
Ive also considered just selling it for like $500 and taking the hit- Id rather not sink too much more into this machine.. lol
By colin james
View File 2002 Polaris Sportsman 700 Service manual
This is the factory service manual for the 02 sportsman 700 to have complete manual download all sectionset or just download the section you need.
Ch1 = General
Ch4 fuel system /carb
Ch5 boady/ steering / suspension
Ch7 final drive
Ch8 transmission service
Submitter colin james Submitted 07/27/2018 Category Polaris ATV
View File 2011 Polaris Sportsman 550 All Models Service Manual
2011 Polaris Sportsman 550 All Models Service Manual, Full service manual
Submitter flyinbrian365 Submitted 02/13/2019 Category Polaris ATV
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