Power valve clearance after cylinder bore

[Zero Client]

How much clearance should there be between the piston(rings) and power valve after cylinder bore? I can't find anything jetski specific - but notice on the dirt-bike and snowmobile forums 15~20 thousandths seems to be the deal.

DASA 850SS

Thanks in advance

 

[Proformance1]

Call Kyle at DASA, hell give you the specs