valve clearance variations

Jasonsblue81

colorado Kid

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• Jun 1, 2023

• #1

Hey guys. getting ready to check valves for first time. on my 1981 400. been reading some posts on different peoples settings. seems to be alot of discrepencies on what spec actually is for the clearances. what does original manual say??

 

CaptChrome

XS400 Addict

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• Jun 1, 2023

• #2

Intake: 0.08 – 0.12 mm
Exhaust: 0.16 – 0.20 mm

I usually set them on the high side of these ranges as the clearances will close up with normal wear.

 

tstidham

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• Jun 1, 2023

• #3

When I set mine, I aim for the middle. Then check with the tightest and loosest feeler blades after locking the nut. It usually changes a tad no matter how careful you hold the adjuster bolt while tightening the lock nut.