[SpudRider]

I am getting ready to check the valve lash on my RX3, but I haven't done it yet. CSC specifies the valve lash as 0.04-0.06 mm for both valves. Initially, I though this valve lash was too small for the exhaust valve. However, I am going to follow these specifications for the first few inspections/adjustments, and if the bike continues to run well, I will stick with them.

However, it is interesting to refer to the AJP PR5 Owner's Manual. The last page of the manual, page 34, lists the following specifications for valve clearance.

http://issuu.com/ajpmotos/docs/ajp_pr5_user_manual_en

Intake: 0.05 mm
Exhaust: 0.08 mm

The AJP PR5 employs the same Zongshen NC250 engine, and Delphi EFI as the Zongshen RX3.