O.S. 56FS-a 4-Stroke Engine

REBATE Item!...REBATE Item!...REBATE Item!...
O.S.® 56FS-a 4-Stroke Engine

Features

Mounts with no-mod ease in the same space as the FS-52.

In addition to less noise, the muffler features a multi-positional manifold with a rubber O-ring that helps prevent oil leakage.

A newly designed lubrication system eliminates the need for crankcase ventilation.

The 40NA carburetor is equipped with a venturi that reduces the chance of fuel leaking out onto the cowl, while also creating more positive air/fuel flow.

$20 Merchandise Certificate or $10 Cash Rebate on an O.S. 56FS-a 4-Stroke Engine Download PDF version of the rebate form. 208KB To take advantage of this Manufacturer's Mail-In Rebate Offer you must download and print the Rebate Form above. Purchase by December 31, 2008. Downloads Require Adobe Acrobate Reader 3.0 or Higher.

A big performance boost for 40-size planes!

A new era in O.S. 4-stroke technology, the 56FS-a is the first in the “a” Series — with the latest advancements for boosting your plane's performance. It's like giving your 40-size plane a new lease on life. Bolt in the O.S. 56FS-a 4-stroke powerhouse, and you and your fellow fliers will all be saying: This engine rates an “a”!

Specifications