Rotax Throttle Return Springs

Stop throttle creep!

A common complaint about the Rotax 912/914 engines is that the throttle return springs are too strong. McFarlane stocks a variety of springs so you can choose the one that best fits your application. All McFarlane throttle controls for Rotax engines include P/N 7140 springs.

Unique hook design for left and right applications provides for better fit and retention.

New design limits potential contact with adjacent parts

Less than half the strength of the original stock Rotax springs
Tailored for Rotax engines, including the Vans RV-12 aircraft
Prevents throttle "creep" due to excessive return spring force
Requires 1 per carburetor (2 per engine)

Spring P/N	Relaxed Spring Length (max in)	Approx. Pre Load (lbf)	Spring Rate (lbf/in)
6822, Red, Left	1.6	1.5	2.1-2.7
7235, Blue, Right	1.6	1.5	2.1-2.7
Rotax Original	1.8 (approx.)	2.0	8-12 (approx.)

Note: Installer is responsible for determining whether this spring is an appropriate substitution for their application. For use on non-certified aircraft.