Allen Dual Arm Mainsheet Jammer Inflatable Boat Spares NB The boat is not

NB  The boat is not at Putney so viewing by arrangement only

and SAE J1171 external ignition protection requirements

L6140A & Yanmar engines from 1997: 6SY-STP & 8SY-STP

Robust design with unique labyrinth seal

Allen Dual Arm Mainsheet Jammer Inflatable Boat Spares NB The boat is notDual arm mainsheet jammer. Allen have spent many hours of research and development with various boat builders to perfect the angle and height of the cleat to optimise mainsheet jamming. Innovative light weight construction. Dual ball race for maximum efficiency. Optional click stops limit swivel rotation. Line snags virtually eliminated. Standard and high cleating angles to suit all. A groove had been created in the arm for the location of the ball