how to change front sprockets?
#1
how to change front sprockets?
just received my new front sprocket in the mail...before i start this project, does anybody have any instructions before i just start unbolting?
#2
you might want to use an impact (air) wrench to loosen the nut. What i did was go to the local guy and loosen it with the impact, then tighten with a ratchet, drive it home to change it out. After you get the new one on, torque it down good with the ratchet and lock the washer in place.
#5
Before I found this method in a prior post, we tried an impact wrench, standing on the brake, putting the bike in gear, etc, etc, with NO luck.
Be careful using this method on an aluminum rear sprocket as another member has suggested it could cause damage. No problems for me with the stock and aftermarket steel rear sprocket. There's an old post around here someplace where a member posted a method for using a spare section of chain to do something similar to the above, but without damage to an aluminum sprocket.
Also, I don't remove the rear wheel to get the chain off. After loosening the countershaft sprocket nut, I loosen the rear wheel, slide it forward, and slip the chain off the rear sprocket. Then replace the front sprocket and reassemble.
Last edited by IDRIDR; 09-13-2011 at 04:26 AM. Reason: clarify: <deep> socket in rear sprocket against swingarm.
#6
Sorry if I made it sound complicated. It really isn't, provided you have the sockets and a good, long breaker bar so you can put the torque to that tight nut! The part about jamming the rear wheel against the swing arm is simple. I use a spare socket that fits in the hole, but you could also use a screwdriver handle or something similar.
Do it!
Do it!
#9
The C/S nut is on TIGHT, like REALLY TIGHT, tighter than any other bike I have come across, but IDRIDR's method will work. I used a small piece of light rebar to lock the rear sprocket against the swing arm and a breaker bar with a 3 foot extension lever. It required some major torquing but it did come loose with little trouble.
While I am not one for babying my KLX, the shock that an impact wrench may transfer into the gearbox concerns me enough that I'd personally stay away from air tools to do this proceedure...
While I am not one for babying my KLX, the shock that an impact wrench may transfer into the gearbox concerns me enough that I'd personally stay away from air tools to do this proceedure...