Home
Basic Dirt Bike How-To's - Video
Dirt Bike How-To's - Video
Living The Moto Life - Video
Bike Tests | Shoot-Outs - Video
Forums
What's new
Latest activity
Log-In
Join
What's new
Menu
Log-In
Join
Navigation
Install the app
Install
More options
Close Menu
Forums
Dirt Bike Discussions By Brand
Kawasaki MX & Off-Road Dirt Bikes
A reason to follow service intervals for RMZ & KXF 250 owners
Reply to thread
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Message
[QUOTE="Rich Rohrich, post: 835580, member: 16241"] The new breed of four-strokes have much shorter service intervals than the old XR style bikes we are used to. Despite the service interval recommendations in the manual a lot of folks who are racing these bikes are choosing to ignore them. Under the heading a picture is worth a thousand words here's a graphic example of what tends to happen when you run the stock valve components too long. These pics are from a KXF 250 that I worked on yesterday. If the springs and valves would have been changed more in line with the service intervals this wouldn't have happened. As a result the head is destroyed beyond repair, the barrel is junk, and the rod was bent and a bunch of other pieces are now scrap. Take specific note of the exploded tappet/bucket in the cam side view. Luckily the rider didn't get hurt when it let go. The interesting part is, with all this carnage the cam journal without an oil groove that people are worried about is in perfect condition. The moral of the story is, if you are racing a 250F invest in an hour meter and pay attention to the service intervals. Click the links below for the full size hi-res versions of the pictures [URL=http://www.ericgorr.com/images/kxf_damage_10-16_1_hr.jpg]KXF Head & Piston[/URL] [URL=http://www.ericgorr.com/images/kxf_damage_10-16_2_hr.jpg]KXF Head close up[/URL] [URL=http://www.ericgorr.com/images/kxf_damage_10-16_3_hr.jpg]KXF Head broken bucket[/URL] [URL=http://www.ericgorr.com/images/kxf_damage_10-16_4_hr.jpg]KXF broken valve[/URL] [/QUOTE]
Verification
Which ocean is California closest to?
Post reply
Forums
Dirt Bike Discussions By Brand
Kawasaki MX & Off-Road Dirt Bikes
A reason to follow service intervals for RMZ & KXF 250 owners
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
Accept
Learn more…
Top
Bottom