Accessories Needed for:
O.S. 21XZ-M Speed 3.5cc Inboard Marine Engine
COMPLETION NOTES FROM THE TECH DEPARTMENT
This is the O.S. Speed 21XZ-M Inboard Marine Engine. FEATURES: 21D big-bore carburetor allows use of high nitro fuel, Diamond Like Coating on silicone filled tungsten weighted crankshaft for optimum balance, RP7 turbo glow plug, laser etched water cooled head REQUIRES: 10-30% nitro boat fuel, glow starter, shore equip.
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