B-Stock - Carburetor RVFK 18 CS - Mounting and usage marks present - externally a standard carburetor - internally a racing carburetor - CS = closed system - the supply of all secondary and compensating air occurs via the intake air path - completely changed interior, optimized for higher air throughput - suitable for tuned 50cc cylinders up to large engines with over 100cc - Perfect throttle response and peak performance with easy adjustability Scope of delivery: - Carburetor - 4 additional main jets Technical data, optional accessories, and changes from the predecessor: - Passage: 18.5mm, closed system - Designation on housing: 16N1-11 - Main jet: RVFK 80, 84, 88 (installed), 92, 96 - Jet needle: RVFK 62 (installed) - Needle: RVFK 48J20 (installed) - Atomizer: RVFK - Slide: RVFK 50 - Air screw: 2.5 - 3 turns open - Housing mold quality improved, especially in the area of the larger slide (cap thread) and the carburetor bowl - Carburetor material improved - more homogeneous, pore-free casting - extended idle jet to reliably draw even at low fuel levels - Side marking 16N1-11, the carburetor size is inconspicuously marked in the choke area Note: - this carburetor is also usable for KR51/ SR50 - the fuel hose must be laid in a loop here so that no kink occurs above the straight connection fitting - for the adjustment nipple for the throttle cable on the carburetor cap, the small lock nut must be removed and then the nipple must be completely screwed into the cap - the play in the throttle cable should then be adjusted via the length adjustment in the cable