Need help with chain/sprocket replacemnet

[thePUNISHER]

Thanks in advance for any info you guys have. I know this id gonna sound NOOOB-ee-Riffic BUT I have a 02 monster 620 dark(my first Duc) in need of a new chain and sprockets. I dont have a manual so I am askin for advice before I start the project and end up in over my head  . I have been workin on cars for almost 20yrs so I am mechanically inclined & I think I have all needed tools(unless there might be a specialty tool or 2 I dont know I need). Anyways here is how I think it should go- PLEASE feel free to tell me if I've left something out or if you have tips/tricks to make it easier. Also I dont know what torque all the nuts an bolts are supposed to be torqued to so that info would be GREATLY appreciated!

Support rear of bike on a stand of some sort
Remove chain.
Remove axle nut & axle.
Slide wheel forward to dis-engage rotor & pull out wheel.
Remove rear sprocket & install new one(are there any alignment marks or anything I need to worry about when installing new sprocket??). Torque sprocket bolts to ??ftlbs??
Remove front sprocket cover & front sprocket retainer bolts.
Install new front sprocket(are there any alignment marks or anything I need to worry about when installing new sprocket??). Torque retaining bolts to ??ftlbs??.
Install rear wheel Tighten axle nut to ??ftlbs??
loosely fit chain to determine length & fit master link, check for proper amount of slack(adjust at rear of swinger if necessary?)
Install front sprocket cover and run it? [moto]

Thanks again for any and all help

[Speeddog]

Support rear of bike on a stand of some sort.
Remove front sprocket cover & front sprocket retainer bolts.
Remove chain.
Remove rear caliper.
Remove axle nut & axle.
Pull out wheel.
Remove rear sprocket & install new one, no alignment marks.
Apply a little blue Loctite to rear sprocket nuts, torque  to XX ft-lbs.
Confirm that axle spacer on the left side is installed with the conical end towards the wheel.
Install rear wheel, making sure the axle spacer stays in place and the rear caliper bracket is engaged on the pin.
Set axle position roughly in the middle of the adjustment, and slightly tighten axle nut.
Install new front sprocket, flat side *inboard*, no alignment marks.
Fit chain to determine length & fit master link, adjust axle position as necessary to get chain to fit.
Apply a little blue Loctite to front sprocket retaining bolts, and torque  to XX ft-lbs.
Check for proper amount of slack, adjust axle position as necessary.
Check wheel alignment, you can sight down each side of the tire toward the front forks.
Tighten rear axle to XX ft-lb.
Snug down axle adjuster bolts *important*.
Install rear caliper, tighten bolts to XX ft-lb. Use blue loctite if you want.
Pump rear brake to get the pads back in position.
Install front sprocket cover and run it.

I think that's all....

Torque values can be found in out FAQ section AFAIK.

[thePUNISHER]

WOW! Thanks and WOW that was WAAY fast. I thought maybe in a day or two but wow. Thanks. Its nice to lnow I wasn't too far off. (edit)- but I know its the small things I didnt know about that woulda screwed me, sprocket flatside in, blue loktite on sprocket bolts, proper install of the axle spacer. 
Thanks again.
I owe you a beer .

[mitt]

not sure what your sprocket retention looks like on a 620- but if it is 1 big nut on the output shaft, here are a couple hints...

it will be on tight - impact will take it off
a small gear puller helps get the sprocket off the output shaft
re-torquing might require 2 people

mitt

[jdubbs32584]

Be absolutely sure you put the front sprocket on like Speeddog says. My ex installed mine wrong and the chain ended up eating through a bolt on the swingarm.

[Buckethead]

Be absolutely sure you put the front sprocket on like Speeddog says. My ex installed mine wrong and the chain ended up eating through a bolt on the swingarm.

<forwards link to Mother for his edification>

[jdubbs32584]

<forwards link to Mother for his edification>

He's such a good guy. He's got a new sprocket and chain waiting on me in Oregon. Awwww!! 

[thePUNISHER]

Thanks everyone for all the info its much appreciated.  I ordered my chain & sshh-prockets(now is the time when we dance, S&L reference, anyone? ) today 14t/46t. I should have em on by the weekend Seems pretty straigh forward, I just need to find the actual torque specs for the front sprocket retainer bolts, rear sprocket bolts, rear axle nuts if anyone has em lemme know, if not I'll prolly just call my local duc dealer an ask for em. Thanks again! this place rox

[mitt]

torques

http://ducatimonsterforum.org/index.php?topic=373.msg0#new

you will have to find the right entry

mitt

[Slide Panda]

The torque for the front sprocket retainer bolts is pretty low like 15 Nm - I'll check my M900 manual later on to be sure.
The rear sprocket is 48 Nm
And the axle nuts are 72 Nn

[Howie]

The front sprocket retaining screws are a whopping 6 Nm.  Definitely use locktite!!
The rear axle on the later (ST based) monsters is 83 Nm.  The older bikes are 72 Nm.

[Slide Panda]

The front sprocket retaining screws are a whopping 6 Nm.  Definitely use locktite!!
The rear axle on the later (ST based) monsters is 83 Nm.  The older bikes are 72 Nm.

I knew it was low... but 6...

Hmm yeah - I was rattling off the rear axle numbers for my 2000 bike, which apparently is a little lower than the newer ones. 

[ScottRNelson]

One step that I didn't see mentioned is to make absolutely sure that the spacer on the rear sprocket side has the flat part against the swingarm:

[Norm]

I thought that putting that washer in backwards at least once was a right of passage.

[thePUNISHER]

Thanks for all the info guys. I got the new chain/sprockets on last week & had no problems(except they sent me wrong rear sprocket, twice ) BUT she runs great an no more sloppy floppy chain