690 Enduro Forum

Technical => General Maintenance => Topic started by: Streeter on January 20, 2018, 02:25:19 pm

Title: Q's about valve adjustment
Post by: Streeter on January 20, 2018, 02:25:19 pm
I'm in the middle of a valve adjustment, and have a couple of questions.    Both of my intake valves are tight, but the exhausts are fine.    I've already adjusted one intake in the past.     In my experience with other bikes, usually the exhausts need more attention.    Is this common on the 690?   Just curious.   

Also, while I have it apart, I'd like to check the rocker arms.    What do I check?    The roller has a slight bit of side-to-side movement, but does not move on it's axis.    I can't really think of anything else to check.

And just a comment:   I bought two new shims at my local Harley Davidson dealer.    They are much more convenient than the KTM dealer, had the shims in stock (for a Vee Rod) and two only cost $10, which I thought was a good price.   I think the shims are the same size that my old Kawasaki ZRX 1100 used, too, but since that bike was only imported for two years, none of the Kawasaki dealers ever had them in stock.   

Title: Re: Q's about valve adjustment
Post by: coarsegoldkid on February 10, 2018, 01:24:35 pm
Examine the rocker bearing carefully.  Any play up or down is the tell.  If you have any replace them before selecting shims. You didn't see any movement so I think you are in good shape.  As for getting tighter clearances all I can say is tight side of the range isn't necessarily bad.  Although I prefer the mid range. If you know the reading / setting from the last check compare it to the new check.  If it got tighter then keep an eye on it.  It could mean that the valve is pounding it's way into the seat bringing the stem closer to the rocker.  This would be not so good.  My easy chair opinion is that is not happening.  My experience on this engine is once the engine has a few thousand miles on it the clearances will not change unless the rocker goes bad.
Title: Re: Q's about valve adjustment
Post by: Onimadi on May 28, 2018, 02:56:36 am
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