Question about 1994 Yamaha XJ 600 Diversion S

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94 yamaha xj 600 want rev over 6000 rpm

I was told carbs were out of sync i did the best i could and it runs better but still wont power above 6000 rpm

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  • glouellette Apr 19, 2009

    dont think its been resricted but dont know plugs look clean and new but im going to get a new set tomorrow. all pipes get hot. this bike has 28000 miles on it and i fear that the top end is wornout (cams) timeing chain is noisy



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Hi m8,,1st,, would u no if the bike has been resricted ,,to 33bhp,,if it hasent2nd,, have a look at the spark plugs,, start her up rev until it coffs or wont rev then hit the kill switch,,see wot colour the plugs are ,,they should a biscuit brown,,if not clean them up or change them,, 3rd test,start her up again throttle it a few times ,,untill shez warm,, then ,this sounds not nice, but either spit on your hand or dip hand in sum water, then quickly touch each exhaust down pipe, and make sure there isnt a pipe cooler than the other 3,, if u do find there is that would narrow the test down to that cylinder thats playin up,,try that 1st m8,, then come back if any probs still, and il take u threw next steps,,

Posted on Apr 19, 2009


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Go to the site below and you can download a free PDF service manual and parts manual for your bike. The service manual is 45th from the bottom of the Yamaha listings and the parts manual is 19th from the top. Now you can tune the carb and adjust the timing chain slack and a whole lot more. It saves my keystroke finger a lot of work also.

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