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Beta Rev 3 2001 running issues

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Hi all new to the forum.

Im in need of some advice, i recently brought a Beta Rev 3 2001. The bike is great, starts easy and runs ok, the only problem is it feels a little underpower and doesnt rev cleanly compared to my mates Techno and Sherco. I have had a look at the timing plate and it is in the middle of the adjustment! i removed the air filter (which is clean) and it improved (not 100% but better) this is making me think jetting. I have 150 main and 30 idle. The bike has loads of compression, sometimes it kicks back (is this normal? was thinking over advanced)

Can anyone shed any light??

Cheers

  • 2 weeks later...

Look and see if their is an extra flywheel mounted on the crankshaft behind the water pump.If its ther remove it.

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