sorry for this dumb nooby question. do I turn the front sprocket retaining nut lefty loosey or righty tighty to get this stubborn sucker off? bike is a hurricane / cbr 600fl 1990

thanx dudes and dudettes

 

Its very rare to come across a left hand thread these days and because sprocket turns to left when driving bike it will be a right hand thread in other words turn nut to left to undo and make sure you have a long bar (crack bar) attacked to a socket if you dont have use of a air gun.

Also make sure you undo locking bit first which prevents sprocket nut coming undone on front sprocket.

One other thing is you might want tyo get someone to hold down rear brake pedal to undo front sprocket nut

If you dont you will need a wall to have front well up against it t prevent bike from moving

 

Great advice, i'll start with an assistant on the rear brake and a very long bar. I've sprayed some good penetrating fluid on it to soak in for a while. I might try 'worrying' it somewhat with a hammer with the nut head protected before I try to wrench it over. My bike looks to have just a bolt then retaining washer and then the sprocket probably because its so old.

thanks again for your help mate

 

When i replaced my sprocket I used PB Blaster a few times and let it soak for a few hours. Then with the tire and swingarm not under any pressure threw a large wrench through the holes in the rim and across both sides of the swingarm and turned on the front sprocket till the bar became tight against the top of the swingarm, almost locking the rear wheel in place and continued turning on the front sprocket and it came loose very easily, then when putting the new one on just reversed the wheel in opposite direction and had the bar across the bottom of the swing arm still through the rim to tighten new sprocket on.

Hope that helps!

 

It's a standard right hand thread.. turn left to loosen.

The nut can be hard to remove especially if it's been set for a long time. If you have access to an impact gun it should make quick work of removal. If not you can try putting the bike in gear with an assistant holding the rear brake. Use a long breaker bar or a bar w/ an extension and try to crack it loose that way.