250 Rebuilding KX250

[timoyz]

I've split a shat load of cases and pulled the crank out of said cases, with only a plastic mallet and some screwdrivers.

 

[Mihylo33]

Alright. So I see the tusk clutch holder/flywheel holder for $17, the 27mn flywheel puller for $11. Do I need to get the case splitter AND crank puller? Or can I just get one of them?

A lot of guys use the rubber/plastic mallets and stuff. I used to do it that way for years but once I bought the crank puller and case splitter it cut my time in half. I can do a complete rebuild and have the bike running in just a few hours.

 

[snowflake]

if brute force does not work you're not using enough of it

 

[AdamRides87]

See all the power valve components are covered in carbon like this. How do I bring the back to life? And shine again

 

[Emily]

View attachment 27744
See all the power valve components are covered in carbon like this. How do I bring the back to life? And shine again

Why do you want them to shine? I'd probably use a really fine grit sand paper to get the carbon off if scotch brite wont work

edit: with that being said I still would just clean the chunks off and reassemble lol

 

[AdamRides87]

Why do you want them to shine? I'd probably use a really fine grit sand paper to get the carbon off if scotch brite wont work

edit: with that being said I still would just clean the chunks off and reassemble lol

I'm not too worried about shine as much as smooth operation. I just wanna get all carbon deposits off them without scratching or pitting them

 

[Mihylo33]

View attachment 27744
See all the power valve components are covered in carbon like this. How do I bring the back to life? And shine again

Brake cleaner and a scotch brite pad.

 

[snowflake]

CR500 swap

 

[AdamRides87]

Brake cleaner and a scotch brite pad.

Won't a scotch brute scratch up the surface. As a painter we use scotch brites to make sealers and paints stick

 

[PALMER84ONE]

Brass wire brush, brillo pad steel wool. Already said it. Kawasaki dense.

 

[ossagp]

Alright. So I see the tusk clutch holder/flywheel holder for $17, the 27mn flywheel puller for $11. Do I need to get the case splitter AND crank puller? Or can I just get one of them?

The only thing I use EVERYTIME is the fly wheel puller. I can generally get cases apart by warming the bearing sockets faster than I can find the pullers. My cases go back together with very little force. The flywheel puller is a must have. You make the call on the teardown or not.

 

[Mihylo33]

Won't a scotch brute scratch up the surface. As a painter we use scotch brites to make sealers and paints stick

Yes because you are etching a softer surface when painting.
I see you have a parts cleaner. Soak it in there or in mineral spirits or in acetone.
I just normally spray mine down and wipe it down.
Also you can do what Palmer recommended.
Those are all fine ways.

 

[ossagp]

Why do you want them to shine? I'd probably use a really fine grit sand paper to get the carbon off if scotch brite wont work

edit: with that being said I still would just clean the chunks off and reassemble lol

I would use oven cleaner Floyd has used the self cleaning feature of various ovens that he has paid for in various marriages.

 

[AdamRides87]

I would use oven cleaner Floyd has used the self cleaning feature of various ovens that he has paid for in various marriages.

Hahah. I heard oven cleaner is a big no no on aluminum parts

 

[ossagp]

Do you have aluminum power valves?