Valve clearence on YX 140cc

[Mxrider23]

My mate is changing his valve springs in his 140cc YX engine so he will need to do the valve clearences , what is the valve clearences on a 140cc yx engine, Thanks

 

[sean01]

hmmm search button broken again....

try this
http://www.miniriders.com.au/motor-tutorials/24965-how-set-valve-clearances-horizontal-engines.html

 

[Mxrider23]

^^^^ is it 0.003 fr the top ad 0.004 for the bottom or can the both be 0.004

 

[sean01]

larger setting is always exhaust(bottom)
if he is putting a bigger cam in then he can do the larger setting on both valves

 

[Mxrider23]

Yeh but i heard that 140 yx engines come stock with a better cam and springs, and he is only putting what it comes with stock so should he just leave the bottom one at 0.004 and the top at 0.003

 

[sean01]

yeah should be fine

 

[Mxrider23]

Thanks mate