Throttle Return Springs
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.
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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.
| Part Number | Description | U/M | Retail Price | Your Price | Stock | |
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6408 | HARDWARE KIT, Dual Throttle | Each | $61.69 | $50.83 |
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6822 | SPRING, Throttle, Rotax, Red, Left | Each | $21.95 | $18.09 |
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7140 | KIT, Rotax Throttle Springs | Each | $45.18 | $37.22 |
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7235 | SPRING, Throttle, Rotax, Blue, Right | Each | $19.47 | $16.23 |
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