Britbike forum Forums British Motorcycle specific Brands Bsa bulletin board Removing the kickstart assembly from a B25

Hello everyone, long time no see. I have a quick question regarding removing the kickstarter assembly from my 1970 B25. How can I remove it without the chain on it! Obviously, it will just spin the sprocket on the other side, instead of removing the nut! I am sure there is a relatively easy way of doing this, but I am stumped!

Thanks in advance,

Alex

A sprocket holding tool is a short piece of chain attached to the end of a bar. You wrap the chain around the sprocket and attach it to the other end using a master link, bolt through the rollers or hook.
Otherwise, put a socket on the sprocket nut and hold the shaft with that. The sprocket nut is put on with more torque than the kickstart nut.

Thank you! going to make a sprocket holding tool now!

Alex

... or the 'ol rope trick.

find TDC, on compression stroke so valves are closed. rotate engine opposite the direction you want to turn the nut. go to bottom center. stuff rope in the spark plug hole. I like 9mm Perlon climbing rope. pull up against it and there ya go. done it many times. once on a Honda CVR with a broken timing belt in the middle of a lava field

Thanks Mitch! I have motor pulled down to just the conrod and flywheel assembly and the transmission, as I need to crack the cases to clean the flywheel up a bunch! I did a sort of hybrid where I pulled an old piece of chain across the sprocket, and then put it up through the head tube on the frame (forks are off), and held it in place by putting a screwdriver between a couple links to provide tension! Nut came off super easy! Thanks again to both of you!