Valve Adjustment:KLX110

[rider34]

Bike used KLX 110





Tools needed:

8mm socket with extension

16mm open end wrench

9mm open end wrench

8mm open end wrench

Feeler gauge

Flat head screw driver (Aftermarket style head)

Needle nose pliers (Stock style head)







Step 1

Remove the four 8mm cam cover bolts using the 8mm socket with extension. Inspect the O-ring for damage, replace if necessary.







Step 2

Use an 8mm open end wrench to remove the left bolt from the upper tappet cover. Use the 8mm socket to remove the right side bolt. Inspect the O-ring for damage, replace if necessary







Step 3

Use your 8mm socket with extension to remove the two bolts from the lower tappet cover. Inspect the O-ring for damage, replace if necessary







Step 4

Set the motor at top dead center by using a 16mm open end wrench. Turn the sprocket counterclockwise until the T marked on the cam sprocket lines up with the bolt hole and casting projection mark inside the head.







Step 5

To adjust the valve clearances, loosen the adjusting screw locknut with a 9 mm open end wrench.





Step 6

Insert the feeler gauge between the adjusting screw and the valve stem. If the clearance is too loose/tight turn the adjusting screw until there is a light drag on the feeler gauge.



Intake/Exhaust valve specification: .002 – .005







Step 7 (Stock style head)

Hold the adjusting screw with the pair of needle nose pliers. Tighten the locknut with a 9 mm wrench. Make sure it doesn't interfere with the adjustment. Be careful when tightening the locknut making sure not to turn the adjuster screw. Always recheck the clearance after tightening the locknut.







Step 7A (Aftermarket style head)

Hold the adjusting screw with a flat head screwdriver. Tighten the locknut with a 9 mm wrench. Make sure it doesn't interfere with the adjustment. Be careful when tightening the locknut making sure not to turn the adjuster screw. Always recheck the clearance after tightening the locknut.











Specification for adjusting screw locknut torque is 6.5 ft-lb



Repeat steps 1-3 in reverse order to reinstall the cam cover and tappet covers.

[PlanetMinis.com]

[Z50King]

wow we have an article section now!! good job kyle



how about an article on setting the timing for a new head? i have to do it soon

[rider34]

Thanks alot!



there's alot more to come.Were going all out on this. Videos and all.

[pitsterprox4]

great write up!!! but on a yx style(china) dont u check tdc at the flywheel

[ben_wingove]

nice, is it the same on an 07 pitster pro?

[RED519]

Excellent job!

[diggin dirt]

Thanks. That is exactly what I needed. Pictures were great.

[richb110]

Very good information

[imgonnapush it83]

excellent infomation i have never done valves on a klx

[kamikaze99]

now we need one for a 50 style engine, but its basically the same, very well done!

[jrkapel]

Thank you. Adjusting valves now.

[turbosnails]

you take clearences at the upper and lower? do you have to re set the timeing?

[NoMechSkills]

Intake/Exhaust valve specification: .002 – .005

Great write-up and a big help! I'm not especially mechanical (though not incapable either), and this walk-through was an excellent procedural guide.

The only thing I'd like to add, though, is that my daughter's KLX 110 is a 2003 and it's possible (?) that there's differences from year-to-year? There's a sticker on the down-tube that specifically indicates .0016 - .0031 for both upper and lower on our bike. I initially followed the .002 - .005 reflected in the thread and set both to .004. It resulted in a lot of valve-ticking. After having found that sticker based on another post, I re-adjusted both intake and exhaust to .002, and now it's purring nicely.