What would cause the drive gear to break on my starter?

In some cases, engine kickback will fracture starter drive gears. Kickback is related to engine set up and can be anything from incorrect timing to problems with the fuel system. If kickback is noticed as a common occurrence on the airplane, diagnose and repair the problem or the replaced starter drive may fracture again. Many of Sky-tec's current starters offer kickback protection.

What would cause drive gear wear and/or a damaged ring gear?

This condition is related to the starter drive extension and retraction and affects all styles of starters. If, during normal extension, the gear does not extend completely, stress will be placed on the drive gear. If the starter drive does not disengage after start, the engine will tend to drive the gear placing stress on the gear and destroying the motor. In either case, the gear will rapidly wear or fracture.

Does the starter drive need to be lubricated periodically?

Sticking mechanical starter drives, e.g., Bendix drives, should be cleaned with mineral spirits and only lubricated with silicone spray. Oil or common greases should not be used as they will attract and retain dust and grit causing the starter drive to stick or wear rapidly. Solenoid-actuated starters do not require any type of cleaning or lubrication. If the starter is not going to be used for some period of time the shaft can be oiled to prevent corrosion.

Why does my starter engage intermittently?

There are two potential causes of this condition. If it is a mechanical starter drive (Bendix) and sticks intermittently, it most likely needs to be lubricated. This type of starter drive is initially lubricated to allow smooth operation. The drive gear must move in and out and also rotate. In use it can become dry and may begin to stick and fail to engage or disengage. We recommend lubricating this type of starter drive every fifty (50) hours of operation. The other likely factor for intermittent engagement would be a faulty starter contactor. If you want to check a contactor, it is best to do so with a load applied. Resistance in the contactor, even a fraction of an ohm, is enough to produce poor or no operation due to the high current field. In a 12-volt starting circuit drawing 60 amps, for example, the addition of 0.2 ohms of resistance due to an oxidized connector or carbonized contact may drop the current to the load to 36 amps. This is a 40-percent loss in starter operating power caused only by a 0.2-ohm resistance. Checking the circuit without a load would require that a lot of resistance be placed in line. The best method of checking the contactor is to disconnect the lead from the starter and connect it to a battery load-meter tester. Activate the contactor and check the voltage on each side of the contactor. A 0.1-volt drop is normal for a new or nearly new contactor. If you find any more than 0.3-volt drop, replace it.

After the start button is released, why does the starter appear to briefly remain engaged?

This is normal for a permanent-magnet starter. Although power is removed by releasing the key/start button, a permanent-magnet motor will actually provide power to itself as it winds down and will keep the starter drive engaged for about a half-second until it loses sufficient RPM to fully disengage.

Why does the starter drive gear remain engaged for an extended length of time after the start button/key was released?

THIS CAN BE A DANGEROUS SITUATION. The starter contactors in many older aircraft may become welded shut after years of use. BE EXTREMELY CAREFUL. A starter contactor that is welded shut could cause the propeller to rotate when the master switch is energized, regardless of the position of the start button or switch. Replace the starter contactor. Your starter may have been damaged by this as well and may also need to be overhauled or replaced.

Why is my new lightweight starter noisy?

Lightweight starters do not have as much housing bulk surrounding them, so they aren’t as effective at insulating the gear train noise from the operator. To compound the issue, switching from a legacy heavyweight starter to a lightweight starter may also change the design style from a direct drive to a gear reduction drive in order to obtain the same drive torque. Gear-reduced starters have a much different noise signature than direct drive starters.

How can I tell whether I have 122 teeth or 149 teeth on my Lycoming ring gear?

122 tooth gear rings have a "v" shape, whereas 149 tooth gear rings have a "u" shape. Be aware that just because your aircraft (or engine) is supposed to have a certain ring gear doesn't necessarily mean that it does. You should always confirm and order the correct starter to match.

Why doesn't the NL Starter work well with a Superior engine?

It appears that Superior reverse engineered the 60882-type ring gear support assembly (for 122-tooth ring gears) when they manufactured and PMA certified Superior Ring Gear Support Assembly PN SL77579-1 Rev.11 (for 149-tooth ring gears). Unfortunately, when pairing those ring gear support assemblies with 149-tooth ring gears, the ring gear rests further aft than Lycoming specification and therefore tends to crash the front face of NL-type starters by a mere couple thousandths of an inch. Other starter models tend to stand back sufficiently from the ring gear, so the mismatch is not as problematic. Since the NL “hugs the line” defined by Lycoming, the mismatched ring gear and support assembly causes an interference condition.

When replacing a B&C or Kelly starter with a Sky-Tec, why doesn't the alternator strap fit properly between the starter and alternator? What bolt should be used to secure an alternator strap to the starter's alternator boss?

Use a Lycoming alternator strap and MS20074-05-06 (5/16-18 thread) bolts.

How do I replace the shear pin on an NL Starter?

The Kickback Protection System or KPS® for the NL and NL/EC family of starters is through a field-replaceable shear pin. When energizing the starter, if the pinion engages the flywheel and the starter motor spins (or at least sounds like it is spinning), but the starter’s pinion gear does not rotate you should replace the shear pin.

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Home / Shop Parts ... / 122-12XLT

P/N: 122-12XLT

Name: STARTER ASSEMBLY, 12V
Brand: Hartzell Engine Technologies
SKU: 122-12XLT
Price: 1125.21 USD
Availability: InStock

STARTER ASSEMBLY, 12V

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Approval	FAA PMA
Condition	New
Manufacturer	Hartzell Engine Technologies
Dimensions	L: 8.5 x W: 6 x H: 15.25 in
Weight	10.8 lbs
Unit of Measure	Each
Retail Price	$1,406.50
Your Price	$1,125.21 + $350.00 Core Charge
Stock Status	In Stock

Eligible Aircraft

Cross Reference

Documents

FAQs

Cross Reference

Reference only: Please verify the product is eligible for your aircraft before adding to your cart.

OEM Part Number	McFarlane Part Number	Comment
12212XLT	122-12XLT

Frequently Asked Questions

Eligible Aircraft

Make	Model	End S/N	Eligibility Chart
Lycoming	O-235-A	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-235-AP	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-235-B	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-235-BP	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-235-C1	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-235-C1A	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-235-C1B	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-235-C1C	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-235-C2A	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-235-C2B	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-235-C2C	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-235-E1	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-235-E1B	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-235-E2A	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-235-E2B	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-235-F1	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-235-F1B	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-235-F2A	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-235-F2B	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-235-G1	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-235-G1B	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-235-G2A	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-235-G2B	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-235-H2C	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-235-J2A	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-235-J2B	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-235-K2A	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-235-K2B	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-235-K2C	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-235-L2A	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-235-L2C	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-235-M1	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-235-M2C	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-235-M3C	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-235-N2A	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-235-N2C	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-235-P1	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-235-P2A	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-235-P2C	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-235-P3C	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-290-A	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-290-AP	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-290-B	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-290-C	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-290-CP	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-290-D	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-290-D2	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-290-D2A	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-290-D2B	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-290-D2C	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-320-A1A	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-320-A1B	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-320-A2A	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-320-A2B	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-320-A2C	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-320-A2D	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-320-A3A	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-320-A3B	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-320-A3C	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-320-B1A	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-320-B1B	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-320-B2A	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-320-B2B	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-320-B2C	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-320-B2D	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-320-B2E	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-320-B3A	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-320-B3B	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-320-B3C	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-320-C1A	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-320-C1B	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-320-C2A	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-320-C2B	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-320-C2C	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-320-C3A	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-320-C3B	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-320-C3C	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-320-D1A	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-320-D1B	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-320-D1C	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-320-D1D	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-320-D1F	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-320-D2A	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-320-D2B	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-320-D2C	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-320-D2F	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-320-D2G	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-320-D2H	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-320-D2J	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-320-D3G	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-320-E1A	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-320-E1B	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-320-E1C	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-320-E1F	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-320-E1J	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-320-E2A	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-320-E2B	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-320-E2C	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-320-E2D	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-320-E2F	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-320-E2G	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-320-E2H	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-320-E3D	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-320-E3H	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-320-H1AD	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-320-H1BD	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-320-H2AD	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-320-H2BD	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-320-H3AD	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-320-H3BD	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-340-A1A	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-340-A2A	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-340-B1A	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-360-A1A	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-360-A1AD	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-360-A1C	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-360-A1D	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-360-A1F	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-360-A1F6	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-360-A1F6D	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-360-A1G	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-360-A1G6	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-360-A1G6D	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-360-A1H	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-360-A1H6	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-360-A1LD	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-360-A1P	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-360-A2A	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-360-A2D	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-360-A2E	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-360-A2F	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-360-A2G	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-360-A2H	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-360-A3A	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-360-A3AD	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-360-A3D	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-360-A4A	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-360-A4AD	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-360-A4D	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-360-A4G	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-360-A4J	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-360-A4K	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-360-A4M	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-360-A4N	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-360-A4P	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-360-A5AD	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-360-B1A	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-360-B1B	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-360-B2A	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-360-B2B	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-360-B2C	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-360-C1A	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-360-C1C	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-360-C1E	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-360-C1F	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-360-C1G	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-360-C2A	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-360-C2B	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-360-C2C	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-360-C2D	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-360-C2E	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-360-C4F	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-360-C4P	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-360-D1A	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-360-D2A	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-360-D2B	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-360-E1A6D	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-360-E1AD	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-360-E1BD	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-360-E2AD	ZZZZZZZZZZZZZZZ	7797
Lycoming	O-360-E2BD	ZZZZZZZZZZZZZZZ	7797
Lycoming	TO-360-A1A6D	ZZZZZZZZZZZZZZZ	7797
Lycoming	TO-360-C1A6D	ZZZZZZZZZZZZZZZ	7797
Lycoming	TO-360-E1A6D	ZZZZZZZZZZZZZZZ	7797
Lycoming	TO-360-F1A6D	ZZZZZZZZZZZZZZZ	7797

Eligibility Chart 7797 Notes

Related Categories

Product Details

Sky-Tec Starters

122 and 149 XLT Series Lycoming Starters

The Sky-Tec XLT Series, manufactured by Hartzell Engine Technologies, is the lightest Lycoming engine starter replacement available. Designed as an updated replacement for the LS, the XLT is the Sky-Tec Lycoming starter of choice for pilots focused on useful-load gains and shops looking for a clean, modern upgrade over heavier factory starters.

Lightest PMA-certified Lycoming starter
Updated replacement for the LS

Note: Confirm teeth ring gear before making a selection. Note the "V" geometry between 122 tooth ring gear, and the "U geometry between 149 tooth ring gear. Always confirm and order the correct starter to match.

For the Sky-Tec fit guide, click here.
For Continental starters, click here.

XLT series starters:

To compare all the Sky-Tec starter series options, click here.

WARNING: Cancer and/or Reproductive Harm - www.P65warnings.ca.gov