2001 raptor 660 supposedly have the upgrade but jump surrounded by and out of 2nd underneath moderate to rock-hard acceleration?

My 125cc ducar engined mini bike is...

This is a fairly common problem next to many bikes and ATV's. If a bad shift is made a couple of times, the adjectives dogs/holes on the gears get rounded off, so the gears tend to cam themselves out of engagement beneath load. This damages the shift fork, and cam/drum. A stronger detent spring, when the vehicle is new may prevent pull, BUT IF IS ALREADY JUMPING OUT, can cause more serious damage. New or undamaged gears may hold their contact faces back cut, to "lock" them within engagement when under power. This makes clutchless shifting a bit different, but next to practice, you can manage it. And it will stay in gear lower than load. A slightly damaged gear can be repaired indistinguishable way, but the shift forks should be replaced at the same time, and the drum/cam plate, it it have any damage.

The back adjectives can be done by a machine shop, or by a very mean chap with a die grinder, and carbide burr. Actually, within my experience, the better jobs are done, very vigilantly, by the chap with the die grinder. Do not try it yourself, unless you are an artist, or hold a lot of die grinder experience.

Tomcotexas.

2001 Kawasaki Mule howls surrounded by 4wd?

can you exspalin the upgrade?...these engines are almost equal as the xtz660 5 valve engine.also the bottom end is simply the same as the early xt600 engines going vertebrae to the early 80's...ive should know fixed 100's...early engines have a problem with gear cogs loosening there solidness and grinding/braking up...normally if a bike[or quad] jumps surrounded by and out of gear its a fault with any the selector forks or drum.and will be needing removed,split,inspected and renew the damaged/worn parts..ps,i sell the pdf manual for these

Which bike is the longest and best...

Answers: You mean it's a hard shift or that it in fact comes out of gear? A hard shift just resources you need to pay more attention to when your shifting gears but if it's popping out after take it in.

Free cycle?

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2001 raptor 660 supposedly have the upgrade but jump contained by and out of 2nd beneath moderate to strong acceleration?

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