Yamaha Blaster Timing Degree Key

[20Blaster04]

Hey does anyone know how to install a 4 degree key for a 2004 Yamaha Blaster, where does it go? Does anyone have one installed on there Blaster and is it good?

[sandnap]

It aligns the flywheel with the crankshaft. You need to pull the flywheel with a flywheel puller ([Only registered and activated users can see links. ] ) and you will see the key in a groove on the crankshaft. I would recommend getting a service manual and following the directions to remove the flywheel. I installed one several years ago on my 2k1 blaster and noticed a slight improvement on the low end.

[20Blaster04]

wait the flywheel is on the left side of the Blaster right? once i screw off the black panel the fly wheel will be there?

[sandnap]

Originally Posted by 20Blaster04

wait the flywheel is on the left side of the Blaster right? once i screw off the black panel the fly wheel will be there?

That is correct. It is really a pretty easy job and should only take about 20 minutes if you have the puller. Just make sure to keep your eye out for the stock key when you remove the flywheel because there is nothing holding it in when the flywheel is not in place. If you need a manual you can find one in pdf format on the internet.

[20Blaster04]

where does the fly wheel puller connect to to pull it off. Then once its off the stock key is there then pull that out and replace it with the new key right? Thanks man

[crfjedi393]

Okay, somebody please educate me here. How does a different Woodruff Key make a difference in performance? I have never heard of such a thing so don't think I'm nitpicking here. Just curious.

[sandnap]

Originally Posted by 20Blaster04

where does the fly wheel puller connect to to pull it off. Then once its off the stock key is there then pull that out and replace it with the new key right? Thanks man

The puller has a threaded collar that screws into the flywheel and a center core that screws in against the crank shaft forcing the collar (and hence the flywheel) off of the crank shaft. Works similar to a gear puller. And yes that is the basic process.

I should mention that the nut that holds the flywheel on can be a bit of a pain to remove. An impact wrench will get it but if you don't have one you might want to put the quad in 3rd gear, back it against a sturdy garage wall, stand on the back tires and yank on it (a breaker bar works good here).

[sandnap]

Originally Posted by crfjedi393

Okay, somebody please educate me here. How does a different Woodruff Key make a difference in performance? I have never heard of such a thing so don't think I'm nitpicking here. Just curious.

It is slightly offset thus advancing the flywheel (timing) 4 degrees which improves performance on the bottom end.

[20Blaster04]

Originally Posted by kj_kfx400

It is slightly offset thus advancing the flywheel (timing) 4 degrees which improves performance on the bottom end.

well that clears alot of things up. very good information. lol so once i get in there the last step should be pull the key off and put on the new key right? thanx man. lol

[sandnap]

Originally Posted by 20Blaster04

well that clears alot of things up. very good information. lol so once i get in there the last step should be pull the key off and put on the new key right? thanx man. lol

Yes, put the new key in and reassemble the whole thing.

[20Blaster04]

thanx man i hope every thing goes well with the installation. lol

[crfjedi393]

Originally Posted by kj_kfx400

It is slightly offset thus advancing the flywheel (timing) 4 degrees which improves performance on the bottom end.

I see.