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Discussion Starter #1
Guys, I gotta vent... I just spent an hour trying to get the "special bolt"/drive sprocket bolt off so I could replace the front sprocket.

I read the maintenance manual and the removal instructions simply said "Remove the special bolt", easy enough huh? Bu!!sh(t That thing is on there solid. I guess the boys at the factory feel the need to overtighten the heck out of it.

I'm basically going at it with a 6" socket wrench, foot on the rear brake, sitting on the bike and pulling up on the wrench with not luck. Does anybody have any suggestions as to how to get this thing off?! (and unfortunately I don't have access to pnuematics).

I'm open to anything at this point. PReeeeesh.
 

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You need to shock load it. Make sure you know whether it's a LH or a RH thread, fit the correct size ring spanner on the bolt & get your buddy to hold the wheel locked up. Put the spanner on & push it down to take up any play then hit the spanner with a 4lb hammer. Mind your fingers, make sure the bike is secure & cover any areas that could get bruised if you are not a good shot.
All the best
 

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If that fails hire an electric impact wrench 3/4 " drive with the correct socket & extension. That will shift it for sure
 

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you spelled bullshit wrong
 

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bolt removal

put it in 1st gear and get off the bike, use a breaker bar and put one good pull on it. you will notice that the washer does not actually pinch the sprocket or at least on my sprocket specialists 520 counter gear, once the bolt is tight, the sprocket is able to wiggle a bit. most aftermarket sprockets are drilled, i use a drilled head bolt at a reasonable amount of torque and safety, cut the wire and look at it cross eyed and it comes loose, necer know a stock bolt to be excessively tight, it does have a splash of white paint telling you its loctited from the factory
 

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Often this bolt will corrode in place. Lost of slop in there especially if you have ever ridden in the rain.

Really the only good way to remove it is with an impact gun.
 

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MAD SCIENTIST
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Its right hand thread so undo anti clockwise.
its a 14mm hex head I think.
Put trans in 5th gear so your effort has less effect on the compression.
Get a 1/2" drive breaker bar and and pipe extension.
If it turns the motor through put a piece of 4x2 over the swingarm in through the spokes of the rear wheel and pad up with rags.
 

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this comes up from time to time.
if you have a helper, it gets easy.
someone sit on the bike in gear holding the rear brake.

breaker bar
counterclockwise
pull
its only torqued to like 40 pounds
 

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Naughty snout
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For one take it off the stands. You still have the chain on correct? if not lace it back on the top make sure there is no slack. Now spin the bolt off should only take maybe 60 pounds to remove it.
 

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do NOT put the bike in gear to remove the front sprocket unless you want to take the chance of bending a shift fork inside the tranny.
 

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With the amount of force this cat is using he has all ready bent it.
not if he is using the rear brake to keep the motor from turning over.
 

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Discussion Starter #18
not if he is using the rear brake to keep the motor from turning over.
Thanks for the input everybody. And yes, I had already broken the old chain which led to an "oh shit" moment realizing the rear brake couldn't hold the drive sprocket in place. I knew I didn't want to risk damaging the tranny so I ended up put the rear tire back on and laying the old chain over the two sprockets and standing on the brake. With that being said, here is what finally worked...

I got a 1/2" breaker bar (20$) with a 14mm extension socket (5$). Stood on ride side of the bike, stepped on the rear brake lever, and gave it a good crank.
 

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Discussion Starter #19
Check out Step 3 in this PDF. This is chain/sprockets install instructions from sumofallparts.net. It has some pics, although it appears to be an R1. Use it for what it's worth.

http://www.sumofallparts.net/install/installkit.pdf

Good Luck. I really didn't have that much trouble when I took my front sprocket off.

BTW, this PDF is really helpful for anybody doing this work for the first time. Thanks a bunch.
 
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