f4i is 69 ft. lbs. of torque

 

so if i removed the rear wheel first im pretty much screwed huh?

 

No, funnily enough it is possible to put the wheel back in.

 

For what, the front sprocket? If you have an impact wrench do what I did. Put the bike in gear, put a phillips head screw driver into one of the holes on the front sprocket and use the impact wrench to loosen the nut on the front sprocket.

 

now i just bought a 51 teeth rear sprocket, and it has more holes then what my f4 has... is that bad or is it how you say a universal sprocket

 

Nice write-up! A couple of things I do different, since I don't have a garage-
buddy, 1. Slip a 2x4 into the rear spokes against the swing-arm to hold the front
sprocket from turning, while breaking it loose. 2. Before I remove the front sprocket,
I put the bike in gear (on the ground), and break-over the rear sproket bolts (just
enough to be easy when I pull it later, not enough to let it flop around on the rim.
Reverse procedure to torque down after it's all back together.
3. I use an angle-grinder to wipe-off the rivet-heads to break the chain.
(I'm a very lazy mechanic, anything to make a job easier has my vote.)

Hope this helps, Ern

 

I messed up and broke my chain before removing the front sprocket. I found an easy fix was to take the chain and route it back on to the front sprocket. Then next I found a long screwdriver stuck it through two links one above the other. I then gently turned my socket until I had take all of the slack out of the chain. The results being that the screwdriver would not allow the sprocket to rotate anymore. The nut came loose and I handled the rest very very easily. I tried to leave it in gear but I was able to actually turn the crank over before I loosened the nut any.

 

great write-up. Now I got another reason to buy a new tool