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I have a Polaris Express 300 2 stroke. Finally got the engine running smooth with everything tweaked correctly on the carburetor. I have now moved on to shifting the gears. I have had this atv for a long time and high gear was always a pain in the as* to get to go into gear, reverse was okay and low was best. You could always feel low go into gear. A couple of months ago the spark plug cap went bad while I was trying to figure out the issue with shifting into high. At this time I put fresh gear oil in and never drained the old because it literally looked empty. Fast forward to a couple of days ago. I finally got everything running but shifting into low you cant really hear grinding gears but it doesn't jerk like it used to when shifting into low and half the time it wouldn't shift fully. Reverse would move but completely grinding, and high of course is still the pain in the as*. All 3 gears when shifting into clicks like it got a good shift, not a click on the gears or anything, just a normal click that your in gear so I know I am not loose on the shifter rods. I checked the gear oil and it was sort of milky, like barely and had bubbles. This means water is in it so i am going to drain the gear oil today. What I am wondering is could the bad gear oil be the reason the gears aren't going in fully? I highly doubt it because of the symptoms with some gears grinding and others not going into gear at all like high. Just need to know what the causes could possibly be. Thanks!

Not sure this is gonna post cause I've been hav'in posting issues ... but here goes ... Took a ride out to the west desert and rode part of the Old Pony Express Route. Rode out to Fish Springs National Wildlife Refuge which was about 67 miles from where I parked the truck. So I did a little over 134 miles, most mileage I’ve EVER done in one day ... so I guess I can't really get on anyone anymore for do'in that kinda mileage in one day ... However, the road is a good graded dirt road & I was able to ride between 35 and 45 mph all day. I could have gone faster, but I had a shimmy in the front end at anything above 45 mph. And because I was hav’in to much fun to balance out the air pressure in my front tires, I just stayed under 45 … and never thought about it when I did pit stops. I also wanted a fairly flat smooth road because I wanted to set my Speedohealer for my 27.5 inch Pit Bull Growlers. (Corrects speed and mileage for track use and for running larger than stock tires) Saw some antelope, some deer and more freak’in people than I could deal with. BTW, when I drove thru the Fish Springs area by the water, the freak’in bugs where bad … got all over my glasses, under my glasses & into my eyes, good thing I ride with my mouth shut !! … and why anyone would want to live out there is beyond me. Saw lots of cool country and lots of other side roads, so I need to go out there & do some exploring … before it gets to warm !! But it was a great day. Hope you enjoy the “Fast Paced” vid and make sure you watch it at 1080p. [ame=http://www.youtube.com/watch?v=-Y6bCiEQLh0]24 Apr 2013 - Pony Express Route Ride - YouTube[/ame] ...