125-200cc Piston to Head Gap

This forum is great. Most questions I have are already answered here. So this is the 1st answer I'm looking for since my switch to Husqvarna in 03/12. I have a 2012 WR125. In the process of installing the 144. Its fairly straight forward. Kit came with a base gasket thickness unknown. With 4 thicknesses available I would like to know the procedure to determine which gasket to use. Can't find any spec. in workshop manual.

You have to measure the squish to find out what base gasket you should be useing.
I set mine at 1.00mm but have tried a little tighter and a little bigger and never noticed any difference in performance at all.
I would say just use the supplied gasket as my local Husky dealer said they all come stock with the same gasket ( cannot remember how thick it is)
Or you can learn how to set your squish using some soft solder and a good set of calipers as it is easy enough to do, Mine comes out at 1.00mm with the standard gasket and I think thats just about right for the Husky.

On my CR150 the base gasket was .5mm. I measured and used a .3 to get the squish to 1mm. I thought I noticed a little more bottom, and a little less hit, but it was pretty subtle.

0.7mm is about the about the minimum clearance for a 144.

Thanks for the replies. I got it now.
Randy Liebig
Team Hardrider
2012 WR125 [soon to be 144]
AMA/D37 Enduro #1 Masters 2014