Getting the Flywheel off

[250-R-250]

So I finally got the damn bolt off. Now, I need to figure out how to get the flywheel off. I know there is a tool. Does it just pull straight off the shaft or is it threaded? Can I get it off without the tool or do I really need one.
Thanks

[Tom TRX250R]

Look on ebay under 250r flywheel puller, its only like 12 bucks and well worth it. You will damage your flywheel trying to get it off without it.

[elbine69]

you need the tool to do it right or else youll end up breaking something

[250-R-250]

Ok, I ll get the tool, but, how does it come off? Threaded or just slid on the shaft?

[wilkin250r]

What happens when you put a nut onto a bolt? It just twists on, right?

But what happens if you hold the nut still, and twist the bolt? The bolt moves back and forth inside the nut. That bolt moving back and forth can be used to push and pull things.


The 250r flywheel puller has two parts. The first part threads into the flywheel, and is the part that holds on to the flywheel and "pulls".

The second part threads inside the first, like threading a nut into a bolt. It goes all the way through at pushes against the end of the crank.

So, you hold the outer part still with a wrench, and twist the inside part with another wrench. Just like the bolt in the example above moves back and forth, the inside part of the flywheel puller moves and pushed against the end of the crank, and pops the flywheel off.

[wilkin250r]

The flywheel is just pressed on to the end of the crank. It's at a very specific location, and you'll see a "key" when you pull the flywheel off. That key fits into a slot on the crank, and a slot on the flywheel, to keep the flywheel in a specific spot.

That key is half of your ignition timing, the other half takes place inside the CDI.

[250-R-250]

Wilkin thanks alot for your help. I understand how it works now. I ll order one now, I guess the motor will have to wait a week:(