sprocket help

[phillcbx]

hi all, having troble getting the front drive nut off so i can get new chains and sprockets on but just cant get the front sprocket nut off, and just had a thought that it maybe a backward thread,
can anyone tell me if it is or a standard undo method
Regards Phill

also after the exup cables if anyone has some for a fzr400 1wg 1988
thanks all

[Kayla850]

Hi,

It's a normal r/h thread, but they can be really hard to undo. I use one of these-

wired up to a spare 12V battery. They're well worth the £25 or so.

[FZR400]

I found that a good spray of WD-40, a long breaker bar and a friend applying the rear brake did the trick for me

[plodder]

I've had one of these that would not go even after the torque wrench, the impact gun and heat.

In the end I drilled 6 holes in the nut very close to but not to touch the output shaft thread. Then put penetrating oil onto the holes, whick pretty much got onto the thread directly.

More air impact gun and torque wrench and it went.

New nut but no damage to the output shaft at all.

[phillcbx]

Hi all,
thanks for all your help, got the bugger off in the end, it was rather tight, 18 inch rachet shaft with a 24 inch tube bar locked the back wheel up brakes on, a big swar word and a grunt it came off, but hell thats the tightest nut ive ever come across after owning about 80 bikes,
thanks again all
kind regards Phill

[Evilchicken0]

You can put a choc of wood hrought the back wheel and let it torque against the swingarm to save using the rear brake

[Taggyd]

pick axe handles are pretty goo for this!