YS 91 SR Helicopter Engine YS 91SR

Brand New in Box, Made in Japan

The 91 SR is the new version in helicopter engine technology from YS

FEATURES:

• New Stroke design for superior operation and more power
• New carburetor design for easier adjustment
• Factory preset fuel regulator
• New rear bearing for longevity
• Balanced crankshaft for a smoother run
• Pressurized and regulated fuel injection system
• Same physical size as 61ST-2, 80ST, 91ST making it easy to add more power to your helicopter

INCLUDES:

• YS91 SR Helicopter Engine
• Check Valve
• Needle Valve
• English Operator's manual

SPECS:

Displacement: 14.89 cc
Bore: 27 mm
Stroke: 26 mm
Practical RPM Range: 2000-17,000
Weight Without Muffler: 533g