Offered for sale from a local estate collection: a vintage O.S. Max .21 big-block nitro glow engine (Made in Japan) with a rotary carburetor and starter flywheel.

CONDITION & OBSERVATIONS:

- Mechanical Check: The crankshaft and flywheel spin freely by hand.

- Untested: The engine has NOT been bench-tested, fired, or verified for running compression on a gauge. Sold STRICTLY AS-IS / FOR PARTS, REBUILD, OR TUNE-UP.

- Missing Parts: Does not include a glow plug, carburetor air filter, or exhaust header/pipe.

- Cosmetic Condition: Shows vintage storage wear including surface dust, dried fuel residue, and mild oxidation on the flywheel assembly.

WHAT IS INCLUDED / VISIBLE:

- Genuine O.S. Max .21 big-block crankcase (stamped "21" / Made in Japan).

- Tall vertical-fin aluminum cooling head.

- O.S. rotary carburetor with remote needle valve.

- Starter cone flywheel assembly.

- Rear crankcase backplate.

Please inspect all high-resolution photos carefully—the exact O.S. engine pictured is what will be packaged and delivered.

SHIPPING:

Ships securely packed in bubble wrap inside a sturdy box via USPS Ground Advantage with tracking.