Question about 1993 Suzuki GSF 250 Bandit

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Suzuki bandit sticky gearbox

The gearbox lever on my bike has become almost impossible to move up and down, i got out the trusty RP7 and sprayed down the leaver and run it up and down a few times untill it started moving freely again but someone suggest that it may be a gearbox oil problem, does this sound likly and if so how do i add more oil to the gearbox?
bike is a suzuki bandit 1991 gsf250

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  • Jason Phillip
    Jason Phillip May 11, 2010

    Do you mean transmissions shifter lever? if so, depending on your mechanical aptitude and tool resources, I would suggest that you or a qualified mechanic dig a little deeper than just a squirt of chain oil on the shifter lever pivot (which by the way can cause the shifter to bind due to the wax properties in it!!). you may have a bigger problem with the shift linkage assembly or worse the transmission itself.



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Stop riding the bike until you change the gearbox oil and oil filter. Yes, the oil is probably the problem. I am somewhat surprised that the pistons haven't seized yet. On the bottom or lower side of the gear box there will be an oil drain plug. Drain the oil and put in new oil. The oil fill hole is probably on the right side cover near the rear of the casing. The plug will probably have a dip stick to measure the oil level. Put in 10w40 motor oil. Ride the bike for a few hours then drain the oil to help flush out the dirt and grit built up in the gearbox. Put in fresh oil and a new oil filter if the bike has a filter.

Your bike is 18 years old and parts can be difficult to find. Your bike probably has an oil filter. If so, it desperately needs a new one. Google " vintage suzuki motorcycle parts " . I can not find a free service manual online. You may be able to buy one at

Posted on May 20, 2009


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