Big bear top end rebuild
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Strongest section of the rings toward the hardest friction points which is front and rear of the cylinder because of the motion of the rod.On a two stroke engine you don't have a choice because of the locating pins on the pistons that lined end gaps up with the intake port.. You don't have to line the two compression rings directly opposite each other,just a few degrees away on end gaps. I just lined both end gaps toward the rear,but one on the left side of the piston,the other on the right,both down from each side of the piston pin/circlip area. Just my way of installing them. Besides rings will move a little anyway over time,they don't stay rigid in one place.
#37
Well I got the bike back together and it runs like a top with no smoking of any kind. The only problem that I have now is a slight backfiring on deceleration. I had this problem before the initial rebuild. I have no exhaust leaks of any kind. The carb has been jetted before I even bought the bike. I did go one size bigger on the pilot jet and that did seem to help some. Should I been adjusting the air mixture screw? Turn the screw in or out? Any guidance would be great. Thanks all
#38
Drop the slide needle clip one position(raises the needle) if you can first and see if that takes care of the problem. Best way on fuel screw adjustment is while it's running and warmed up. Start at 2 turns out for a base setting.Look at the junkman's video to give you an idea how to do it. Good luck with the atv,hope the oil problem is finally solved.
#39
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Elkaholic
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