mardi 23 mars 2010

02 YZ250 Kickstart assy. mod (Step 3)

Engine has been completely sealed and torqued to appropriate specifications.
Here is the picture without the Crank Lever but with all components.




See how nice the seal and shaft are fitted to (let hope) avoid any oil leaks.



02 YZ250 Kickstart assy. Mod (Step 2)

I finally received the governor bolts and I will reasemble the engine components. Hope I can finish this pretty soon so I can finally give you results. Here's what's left to do :

- Torque Clutch Basket nut
- Pry the Clutch Basket nut lock
- Insert Clutch (pressure plates and friction plates)
- Insert push rod correctly
- Insert Clutch inner cover and torque bolts to appropriate values
- Install new gasket in Clutch cover and torque to appropriate values

Have the kickstart's swivel base drilled to accept a "Roll Pin" instead of a "Spring Pin". It's been suggested by a member of the http://www.thumpertalk.com/ forum and seems to actually better fit the need for this application. Will let you know the outcome.

By the way, estimate date of completion should be close to march 27th, 2010. Stay tuned.

lundi 8 mars 2010

2002 YZ250 Removing stripped governor bolts

The 2001 oil seal fits perfectly and will be used.
The governor bolts are BackOrder. Trying to find a place to order them so I can complete this project.

I'm running into delays here because someone had already played in the old crankcase cover (bought the bike used) and the governor bolts were stripped. Because they are hard to reach, it wasn't possible for me to use a traditionnal dremel or metal saw. For those who don't really know what to do then, here's a little tip :

Buy a screw extractor set for about 10$ (here at canadiantire.ca) and read carefully the instructions. These screwdriver bits are made of hard metal and must be used "Counter-Clock wise". One end is used to clean remaining metal and resize the hole for the other end to make threads. Flip the bit and slowly unscrew to thread the existing bolt. Eventually when it grips, you'll be able to unscrew the existing stripped bolt. Hard to explain but instructions are clear enough!

Bolts should arrive pretty soon! Once they arrive, I will complete the engine mount and kickstart the engine.