Crankshaft: The crankshaft has a special shape and is filled whit silicon to reduce turblences inside the crankcase. The front part was extended to improve the seal against fuel leaking.

Rear ball Bearing: The outer diameter of the rear ball bearing is increased to 26mm, this improves the strength and lifespan of the ball bearing.

Rear cover: The rear cover presents a round shape; this minimizes the dead space and allows easy access for quick check-up.

Carburetor: The carburetor of this engine is made from plastic and in "reverse" style and has a sliding throttle valve.

Base Carburetor Settings: One turn out from flush on the top and bottom. For breaking in the engines turn out ¼ turn from base settings top and bottom and add a few drops of 1M1 NOVAROSSI oil in the glow plug hole and carburetor hole, rotate engine with flywheel 4 or 5 times before first start up. This will prevent a dry start up condition inside the engine.  Warm the engine with heat gun before first start up to loosen engine tolerances.

Suggested manifolds & tuned pipes: For this engine there are several tuned pipes available:
Manifolds: 41029, 41030, 41005, 41020, 41021.
Tuned pipes: EFRA 9901(51016). For more bottom end use EFRA 9953 (51017).