175566 Ignition Switch 7 Terminals 2 Keys & AM138068 Starter Solenoid - Compatible with John Deere L100 L105 L110 L120 - Replaces GY20074 925-1741 94762 175566 175442 725-04439 725-04439B

175566 Ignition Switch and AM138068 Starter Solenoid

Key Features

• Replacement set includes one 175566 ignition switch with 7 terminals and two keys, plus one AM138068 starter solenoid.
• The ignition switch provides four control positions, including a headlight control setting.
• The switch has a durable ABS plastic housing, copper terminals, and keys designed for smooth rotation and secure engagement.
• The starter solenoid uses internal 180°C copper windings for reliable electrical actuation.
• Color: as pictured.
• Confirm the engine model, wiring arrangement, and existing part numbers before ordering.
• Covered by the stated lifetime protection for defects or issues.

Replaces

This set replaces the 175566 ignition switch and AM138068 starter solenoid used on compatible lawn tractors. The two parts can be replaced together where both numbers are specified for the same application.

Cross-Reference Part Numbers

Ignition switch:

• AYP Craftsman: 163968, 175442, 175566, 532175566, 583068901
• Cub Cadet and MTD: 725-1741, 925-1741, 925-04227B, 925-04227A, 725-04227A, 725-04227B
• Delta: 6900-47
• Husqvarna: 532163968, 532175566, 539107541
• John Deere: GY20074
• Murray: 94762, 94762MA, 94762MAX
• Poulan: 163968, 175442, 175566

Starter solenoid:

• MTD: 725-1426, 925-1426, 925-04439, 725-04439, 725-04439A
• John Deere: AM138068, AM130365, AM132990, AM133094, AM138497
• Trombetta: 862-1211-211-16, 816-1211-211-16
• Stens: 435-151

Compatibility & Fitment

The 175566 ignition switch is listed for a range of lawn tractors, including Husqvarna YTH1542XP, YTH1848XP, LTH1342, and LTH1342A. The ignition switch and AM138068 starter solenoid share fitment on these John Deere models:

• L100, L105, L107, L108, L110, L111, L118, L120, and L130
• LA100, LA105, LA110, and LA115

Fitment may vary by production year, engine, and wiring configuration. Compare the original parts and terminal layout before installation. Part/model reference: 175566 AM138068.

When to Replace

Replace the ignition switch when the key does not consistently crank or run the engine, the headlight position fails, terminals show corrosion, or the switch causes intermittent electrical operation. Replace the starter solenoid when the starter does not engage despite a charged battery and a functioning ignition circuit, or when the solenoid clicks without delivering power to the starter.

Installation Tips

• Disconnect the battery negative (-) terminal before removing either part to prevent accidental short circuits.
• Photograph or label each wire and follow the tractor wiring diagram. Match every wire to the correct terminal; reverse polarity, overload, short circuits, and poor connections can damage the parts.
• Inspect connectors and copper strands for corrosion or looseness, and insulate exposed strands before reconnecting.
• Install the switch and solenoid in the original mounting positions, reconnect the battery, and test starting and headlight operation.
• Replacement normally takes a few minutes when the wiring and mounting hardware are accessible.