Rotax Choke Controls - Turn-to-Lock
FAQs for "Rotax Choke Controls - Turn-to-Lock"
Frequently Asked Questions
How do I clean and sanitize a McFarlane Push-Pull Control?
We make the following cleaning and sanitizing recommendations to be completed between flights:
Recommended Cleaning Process
1. Put on clean disposable gloves prior to cleaning and disinfection.
2. Pull controls back to the fully retracted position to expose the full length of the control shafts.
3. Apply isopropyl alcohol to a clean microfiber towel. Do not spray any solution directly on the controls or any other surfaces or components in the aircraft.
!!! WARNING: DO NOT USE BLEACH WIPES ON ANY MCFARLANE CONTROL !!!
4. Gently and thoroughly wipe down every control knob surface and control shaft.
5. Let cleaning solution dry on these surfaces (contact time).
6. Use a clean and dry microfiber cloth to wipe away any solution residue left on knob and control shaft surface.
7. Remove all gloves, towels, and cleaning supplies from the work area in the aircraft.
Please contact McFarlane Sales directly at 866-920-2741 or 785-594-2741 or sales@mcfarlaneaviation.com if you have any additional questions regarding the disinfection of our controls.
How do I trim my engine control to length?
Please reference the Installation Instructions included with your new control.
I purchased a laser engraved knob and the thickness of the marking is very shallow. What kind of wear resistance can I expect?
The laser marking does not harm the hard durable anodize coating on the aluminum knob. The CO2 laser process only bleaches the color from the anodizing leaving a silver white color that contrasts with the surrounding dyed anodize. The durability of the laser marked area is not affected by the laser. Our tests have shown that the laser process actually improves the corrosion resistance of the anodize layer. The CO2 laser engraves aluminum knobs by vaporizing the surface leaving a deep durable groove. This groove is then filled with a special paint for contrast. The result is a durable long lasting mark.
What is the minimum bend radius for my engine control?
McFarlane's Storage and Packaging Specification requires a specific packaging minimum radius based on the length of the control, type of wire used, and the configuration of the control end(s). Please contact us to determine the exact requirements for your specific control.
Why is my new engine control too long/short?
There are several things that could be different such as engine/aircraft modifications, rigging/clocking of control arm or adjustment of rod end will be needed, placement of clamps or brackets may be different, or a previous installation change such as routing from original.
Turn-to-Lock Choke Controls for Dual Carburetor 912/914 Series Rotax Engines
Allows a neat, clean installation without a clunky splitter box
These controls feature a turn-to-lock mechanism that requires a quarter turn of the knob to lock or unlock the control at any position. For a non-locking control go to Non-Locking Choke Controls.
- All metal construction
- High temperature Teflon lined conduit for smooth, consistent control
(Cheapy controls with poly liners will not tolerate engine temperatures) - Available in 4, 6, 8, 12 foot and custom lengths
- Measured from panel fitting to end of conduit, wires extend at least 4 inches beyond conduit
- Easily trimmed to length
- Adjustable cable stops to limit travel
- Many knob styles available or provide your own knob with 1/4-20 thread
- Manufactured to the same quality standards as McFarlane's FAA-PMA parts
- Slip fit conduit terminal fittings also available: part numbers 6424 or 6271
- Includes one 0.05 allen wrench and two adjustable barrel stops to attach to the carb choke arm (no swaging or soldering necessary)
Specifications:
- Travel (stroke): 3.5" minimum
- Conduit: 0.188 inch OD Teflon lined wound conduit
- Max Work Loads: Pull: ~25 lbs (Not designed for push loads)
- Minimum Locking Force: ~30 lbs
- Operating Temp: -65 to 450 deg F (knob/housing assembly: -65 to 250 deg F)
- Panel Fitting: 1/2-20 UNF thread
See McFarlane Turn-to-Lock Controls for further specifications.
Order part number: MCTL1014DLLL-K - where LLL is the the length of the control in inches and -K is a suffix indicating the style of knob indicated in the following table:
| Knob Style Suffix (-K) | Knob Style |
| -B | Ball |
| -F | Fluted |
| -T | T-Handle |
| -P | 4-Prong |
| -FL | Fluted, engraved* |
| -TL | T-Handle, engraved* |
| -PL | 4-Prong, engraved* |
* Engraved knobs are marked with a symbol indicating the direction to turn to lock the control.
These controls are not for use on certified aircraft, or for use for flight controls or flight control trim tabs.
Why choose McFarlane?
OUR PARTS ARE ENGINEERED TO LAST LONGER WHILE SOLVING KNOWN SAFETY ISSUES
OVER 40,000 PARTS IN STOCK WITH SAME DAY SHIPPING IF ORDERED BY 3PM
OUR TEAM PROVIDES THE OLD-FASHIONED CUSTOMER SERVICE THAT YOU EXPECT
Select a Category
McFarlane Aviation Family
