I've got an '88 CBR1000f and it has the flathead valve adjustment screws instead of the hex ones. Anyways, I'm attempting my first valve adjustment and I hate to say it, but somehow one of the intake valve adjustment screws has become stuck and will not budge. I'm afraid it's going to strip if I try to loosen it with a flathead screwdriver. Does anyone have any suggestions? I really don't want to break anything. Help!

 

Well, I was able to get the adjustment screw loose, but now I can't get the locknut to tighten back in place, as it appears the thread towards the bottom of the adjustment screw is stripped.
What a mess of a night.

 

LINK sorry to here about your luck. Hope this link helps you out.

 

Thanks. How big of a job is it to get in there to replace this screw?