Kolm Valve
17.25x40.25mm: 50cc Class motors EZ50 - IL150, BX120, BX240
18.25x40.25mm: 77cc Class motors EZ77 - IL310, BX155, BX310
Technical Dimensions
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SETUP GUIDE by DR.G
DR.G's GUIDE TO CARBURETOR BUTTERFLY TRAVEL, THROTTLE SERVO SPEED, ADJUSTING THE CARBURETOR NEEDLES