Thinking it's time for a Top-End rebuild

[mandark1967]

Maybe I'm being paranoid after comparing my KDX to my YZ, but it seems as if the KDX is seriously lacking in compression...

I can move the kick starter through its stroke on the KDX with my hand pretty easily...that's never been a good sign if I recall correctly

The last bike I did a top end on was a 1982 RM 250Z (was out of riding for a couple decades) and things have changed a "bit", obviously.

Anyone know where I can pick up a decently-priced compression tester? And what range of compression for the KDX is considered normal?

I've been looking for a clymer manual for my KDX but it's been pretty difficult locating one thus far...most are for 200s and there's some sort of supplemental for the 220...

 

[KDX220 Rider]

You should be able to pick up a decent compression tester at an auto parts store.

The Kaw compression specs for a 220 are 95 - 151 psi (usage range).

Get the Kaw service manual. Yes, it's for a 200 but the service part of everything is the same. The 220 service supplement is a short booklet with the specs for the 220.