This is the Cover Plate with Needle Valve Holder for the O.S. Max .25LA
and the .25LA-S Airplane Engines.
This Cover Plate also known as a Back Plate fastens to the
rear of the Crankcase to seal the engine, hold the Needle Valve Assembly,
and allow access to the Crankshaft and Connecting Rod.
FEATURES: Constructed of molded black plastic with brass needle valve holder.
INCLUDES: One Cover Plate with Needle Valve Holder for the O.S. Max .25LA and
the .25LA-S Airplane Engines.
REQUIRES: Four 2.6mm x 8mm socket head cap screws (can use OSMG8678) to attach
cover plate to crankcase, connecting fuel line, and installing
needle valve assembly which consists of the Ratchet Spring
(OSMG8172), O Ring (OSMG7388), and the Needle (OSMG7017).
COMMENTS: This cover plate does not include the needle valve assembly. The
version with the needle valve is OSMG4073.
No cover plate gasket is used with this engine.