Valve Adjuster Locknuts

1194 Views 2 Replies 2 Participants Last post by redfish, Jan 20, 2015

redfish

Discussion Starter · Jan 20, 2015

I'm posting this just for 500 owner information.

This is the third time checking the valve clearances - went 10K miles between checks this time, but no valves were were found to be too tight.

The service manual states 18 ft/lbs torque for the lock nuts. This feels way too tight and has to be wrong. Using a known good torque wrench I used 15 ft/lbs instead, and even then ruined one of the locknuts (deformed the threads).

From now on I'll just snug them up real good with a small wrench and hope they stay put.

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MnV500

· #2 · Jan 20, 2015

redfish,

Yep I agree! I have the Kawasaki service manual and stripped 2 nuts tightening them to spec. It's an easy fix as I replaced the nut and screw. But I won't tighten them to spec anymore.

Here's my post from June 2011...

http://www.vulcanforums.com/forums/showthread.php?t=16893&highlight=valve

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redfish

Discussion Starter · #3 · Jan 20, 2015

MnV500 said:
redfish,

Yep I agree! I have the Kawasaki service manual and stripped 2 nuts tightening them to spec. It's an easy fix as I replaced the nut and screw. But I won't tighten them to spec anymore.

Here's my post from June 2011...

http://www.vulcanforums.com/forums/showthread.php?t=16893&highlight=valve

MnV500,

Sure wish I'd known of your thread.

You're right, it's an easy fix but those nuts are an odd size and can't be found locally. I did order them, but in the meantime found an independent shop that had a 7mm x 24 tap to straighten the threads on the injured nut. Haven't installed yet and if there's more thread slop in the repaired nut than an uninjured one, I'll wait for the new ones.

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