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If your aircraft has a pull-type starter, installation will require some modifications:

Your pull starter mechanically engages the starter drive while simultaneously supplying power to the starter motor.  The Sky-Tec C12ST2 engages electromechanically so you must do two things:

• Order the "kit" (KCST2) which includes a C12ST2/S starter, push button, wiring harness, STC's and instructions.

• Replace your pull-start "T-Handle" (or knob) with the push-button switch and wiring harness in the kit.

• Cut-off the shaft in the rear of your engine upon which your pull-starter's pinon gear used to ride.  This can be done by following the STC modification instructions.

If your aircraft has been previously converted from a pull-starter:

Ah, this one's easy!  Just order a C12ST2/S from your favorite dealer, install and enjoy (we even include the gasket).  The /S will be a "short-nose" starter that will clear the previously cut-off pinon gear shaft inside the rear of the engine. 

If your aircraft was manufactured with a push button (or mag switch) starter:

Another easy one.  Order a stock C12ST2 starter from your favorite dealer, install and enjoy.  We even include the gasket!  The stock starter has a small dowel boss on the nose of the starter that will reside within the needle bearing inside the rear of the engine.  The only purpose for that dowel is to keep your bearing needles from falling out.  There is no need to pull the bearing.

What if you're unsure which engine you have?

Take off the accessory case on the rear of your engine.  Look inside, toward the top most area of the cavity.  If you see a hole (actually, that's the inside of a needle bearing), order the stock C12ST2.  If you see a flush-cut shaft, order a short-nose (C12ST2/S).  If you see a shaft, order the KCST2 conversion kit.

ST2 Model Caution

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Safe for ALL TCM starter adaptors!

The new CxxST3 starter has been redesigned from the ground-up to achieve incomparable, aggressive design goals:

• Incredibly low weight (only 6.5 lbs!);

• Aggressive gear reduction for high torque w/low current draw;

• A patent-pending, common-sense design that eliminates the majority of "broken spring" scenarios that occur so frequently on TCM's  new "improved style" (their quotes, not ours) starter adaptors;

• Nearly instantaneous release of the starter adaptor wrap spring virtually eliminates starter-induced adaptor wear;

• Approved and recommended for ALL starter adaptors ("classic style", "improved style", "permold", "sand cast", etc.);

• A simple, easy-to-install, bolt-off/bolt-on, maintenance-free starter that fits the entire "large" series Continental engines (with right-angle starter adapters) from O-300-D through TSIO-550 engines;

• Highest torque possible with minimal current draw (you're going to LOVE how it cranks those Continental-powered Cessna's with the battery way in the back!);

• Attractively designed and affordably produced making it the first and only choice in lightweight large Teledyne Continental engine starters.

How is the Sky-Tec starter different?

The ST3 starter incorporates an innovative clutching system which enables the starter to engage the TCM starter adaptor while powered and completely disengage the powerful permanent magnet motor while the starter is unpowered.  This positive disengagement allows the TCM starter adaptor to fully unwrap under all normal operating conditions thus greatly prolonging starter adaptor life.

How do I know which one to buy?

This one is pretty easy!  If your TCM engine has a right-angle starter adaptor at the rear of the engine, chances are this starter is the right one for your application.  Consult our extensive aircraft fit guide just to be sure.

• Comprehensive C12ST2/S Installation Certification Page
  (Includes all relevant drawings)
   

• ST2 Installation Drawing
   

• Wiring a Push Button C12ST2/S Installation

  

  Click to Enlarge Diagram

   

• Wiring a Key Start  C12ST2 Installation
   

  

  Click to Enlarge Diagram