Changing front sprocket

Changing front sprocket

Q. Just found this web site and so far it has been fairly helpful.. But……. From what i have read about changing the front sprocket all you have to do is take off the bracket that covers half the sprocket.. This is where the dumb question begins.. The bracket holds the hydraulic clutch crap in place right ?, can it just be removed as some guys have mentioned?? does any oil come out ?? from loosening the bolts it looks as if the clutch piston is also coming out.. I know I’m probably being too careful, but hey I also like to ride my bike, not watch it sit in my garage half broken from me taking off stuff I cannot get back on.

next post is By skydork
You have to remove the clutch slave cylinder to get to the sprocket. This cylinder is like the brake calipers, as it is a sealed unit and no hydraulic fluid will leak out. Once the slave cylinder is removed, just remove the mounting bolts to the bracket and you’ll have complete access to the engine sprocket. You don’t even need to take the side fairing off the bike. Go to and check the “parts” area for an exploded view of the system. Shouldn’t take you more than 20 minutes to get to the sprocket with NO fluid leaks. Now if anyone can tell me how to get my ‘frozen’ sprocket nut off, I’d appreciate it!!!

next post is By Ken
I will forgo the impact wrench route as most people do not own one. Also when all else fails, here’s the answer.

First, buy a new nut! Then with a tiny drill bit, drill a series of holes in a straight line across one side. Then with a small chisel carefully complete the break. Works every time. I’ve seen nuts so frozen that my impact wrench running full 125PSI wont break them loose. I then turn to my Nitrogen source for filling shocks (UP TO 500 PSI). Then its all a matter of how brave you are in turning up the pressure till the wrench or hose explodes. I’ve seen nitrogen source pressure as high as 200 PSI before the nut would turn on a 93 GSX R 750, on a Snap-On wrench rated at 600lb-ft at 125PSI. Talk about stuck. My bravery limit is about 200 PSI, way over max of 95. Then I get the drill and the bits out, make the cut with the chisel and all is done. Just make sure you have a new nut handy first.

Kenneth H2Os

next post is By jgerard
If you have someone hold pressure on the rear brake, or stick a pipe wrapped with a bath towel through the rear wheel, you should be able to remove the sprocket with a breaker bar. Also before removing the clutch slave cylinder hold the clutch lever in and zip-tie the lever to the handle bar. this will keep the piston in the slave cylinder from coming out.

This site is kindly funded by the politically correct folks at

Visit the Red Monkey ZX-7R Owners Club

They are very helpful as long as you fill in your profile – your favourite dish had better be roasted nuts if you fail to adhere to this one and only site rule!

Print Friendly, PDF & Email