Mercury Big Tiller Zero Torque Outboard Tiller Steering System - to 150 HP

Tiller steered boats are labor intensive to steer due to the constant load on the tiller from propeller torque, and the fact that the operator is positioned (while driving the boat) in such a way that maintaining control requires physical effort not customary in everyday activities.

The higher torque of today’s four stroke engines has naturally increased the load on the tiller compared to two stroke enginess. Though engine horsepower on tiller steered boats may not have changed, the difficulty in controlling these boats has increased.
Having a system that locks out the torque while the boat is not actively being steered, say while fishing, is a desirable feature that has been implemented on larger engines by engine manufacturers.

The solution is the Zero Torque Tiller System which consists of an hydraulic cylinder with a control valve that opens and closes following any change made to the tiller. The valve closes when the steering effort by the driver is stopped; as a consequence the cylinder locks the steering position. Simple. Elegant.

• Hydraulic torque lockout
• Safer boat handling operations
• Consistent boat direction
• Fatigue reducer
• Includes Mercury® Big Tiller

The ZTF System Kit includes:
– Mercury® Big Tiller Handle with key switch and lanyard*
– Uflex® UC94 Cylinder
– Uflex® Integrated ZTF Tiller Valve

ZTF (Zero Torque Feedback) Tiller Steering Model Range –
• ZTF Tiller M1T - For use with Mercury® 150 4 Stroke Outboard from 2005 to date
• ZTF Tiller MC1* - Conversion for customer supplied Mercury® Big Tiller Handle

* Requires conversion of customer supplied Big Tiller handle at the Uflex® factory in Sarasota, Florida