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So honed out the cylinder and got most of it nice nice but left with this .. Might just have to have the things bored out now ..... some before and after..pics. 1995 Polaris Sportsman 400 4x4 have to have the things bored out now ..... some before and after..pics..

I just rebuilt my 03 sportsman 400. Put everything back together added oil per the manual. Pinched off the oil tank vent line 2" away ran for 45 seconds then cut it off. Check oil level and it was still way high so I wasn't confident that it primed so I did it again. Checked again and it's the same. Remove the oil filter and it is dry. I did the procedure again and the same results. I'm worried to keep trying this as the only oil in the engine is what I used to lubricate the parts when reassembling the piston. The crankcase was drained as well. I Removed the oil tank and checked all the lines for obstructions and the screen filter and the vent hose and everything is clear. I even pulled a small vacuum on the oil tank while it was pulled off to make sure there were no leaks. The dipstick cap was on tight so I'm not sure why this thing is not priming. Anyone have any suggestions. I thought about pre-priming the oil lines from the oil tank to the crankcase to hopefully help the system prime. I'd like to be able to add some oil to the crankcase to so I wouldn't feel so bad about running the engine for another 60 seconds without oil. I dropped just a little bit of oil in the spark plug hole to help condition the sleeve right now. What do I do? Anyone had or heard of an oil pump failure on these. Btw oil pump is working fine before I did the top-end rebuild and the oil pump was not touched. Please help!!! Thanks all for any and all help.

What would be the compression on a 1995 Polaris sportsman 400 4x4 ?? Have one in great shape plastic is almost like new and the engine only has 90 psi which I figure is Capulet ... brendan

2012-2014 Sportsman 400/500 factory service manual View File This is the factory service manual for multiple models of the years 2012-2014 sortsman 400/500 including hd edition's. Submitter colin james Submitted 08/13/2019 Category Polaris ATV