125-200cc flywheel weight install mistake

So I hate to even write this down because I feel so stupid, but oh well here I go.

Day after christmas setting about installing the new flywheel weight (Christmas Present) on my sons cr125 and everything is going great.
Put weight on, torque new nut to spec and try to install cover. Cover, with spacer, won't fit...Take a second look and realize that I had not hand threaded the reverse threaded flywheel weight onto the shaft. It clearly explains this in the instructions so its COMPLETELY my fault. So, now I unscrew the new nut and pull the weight off which does not come off easy.

After I unscrew the new nut and pull the flywheel I discover that I have goobered the reverse threads (just the first run) on the flywheel weight and of course it wont thread on. Crap!

Needles to say I am very bummed and mad at myself right now. Does anyone know if I can just take this to a local machine shop and get them to fix it or do I eat the cost of this and try another the correct way?

thanks

Just run it some place and have a tap run thru the threads from the oppostie way. Hey, we all make a boo boo every once in a while.

Don't feel bad. I used an impact on one and forgot to put it on forward instead of reverse and snapped the end of the crank threads off, in two seconds. Had to buy a complete crank half. It was on my 87 430.

Got a thread file? If no, se if you can clean the starter threads up with a regular file and a pick. Just work the starter threads down a bit and clean any metal from the grooves.

thanks!

I'll be headed to a machine shop Monday or Tuesday to see what they can do.

Nice to know other people make mistakes. Its amazing how simple jobs can get amazingly hard in a moment.

Ill post up with what I find out. Going to try and get a ride in this week and I'd like for son to get to try the new flywheel out!

thread file ....
who knew!!

http://www.webbikeworld.com/motorcycle-tools/thread-file/

Thanks for the tip I'll have to pick one up. I know I'll need it sooner or later

No thread file, but I just followed the above link and will have one shortly.
Thank you!

I do have a pick and will work on the weight this afternoon.
Maybe that will be enough.

If your feeling lucky you could put a glob of grease on the crank shaft(to catch any threads or filings) from cutting the crank seal..

Then using a battery terminal "POST" cleaner and turning it counter clockwise then clockwise it will clean up and loose threads.

I would use a good thread cutter on the none boogered side of the mag nut and try to start it that way and careful us it as a tap turning it counterclockwise and clockwise like you would be using a die BUT only run it down til you hit good threads of the nut to good threads on the crank end..NO FURTHER

If you get it started and going back and forth then I would get all the metal wiped out and clean.. I would also use a new nut to finish the job.

Good link.

Ok,
took the weight to a machine shop only to be told, (think True Grit) "I can do nothing for ya."

Darn!

Went to a local tool specialty store bought the thread file for metric threads figuring I had nothing to lose.

Worked on the threads for 10 or so minutes really didn't notice a difference tried to thread the weight on and noticed it was starting but not perfect. Kept working on the threads over and over and pretty soon the darn thing threaded on.

Thread file. Great tip
Thanks for all the help.

Riding tomorrow

Cool.

See, you don't need to stinking machine shop.