Lifan shim 23773/1P50FMG-2 thickness?

[mikkh]

This shim is located on the countershaft between 1st gear and bearing n the following engines:

Lifan 125 1P52FMI (start in any gear version)
Lifan 138 1P54FMI (since june 2009)
Lifan 140 1P55FMJ (since june 2009)
Lifan 150 1P56FMJ HS1P56YMJ
Loncin 156FMI
Jialing 125 type 1P56FMI
ZhongShen 140 1P62YMJ

And it is on the countershaft between 3rd and 4th gear on Lifan 1p39 engines.

Would like to know thickness to be sure. I´m guessing it is 1mm thick.

 

[mikkh]

Well it was 1.2mm thick on a lifan 138 (but not sure about the model year of the engine).
And on lifan 120 (20mm countershaft) it was 1mm thick.

Used the 1mm thick shim on my lifan 150 and it got wear on the gear selectors (like the shim was too thin). So I believe the correct thickness should be 1.20 mm.

Going to buy some new pitbike gearboxes to just clarify the shim thickness issues .