Toro Brand [Lifetime Warranty] 725-12066 Ignition Switch 3 Position 6 Pin with Keys - Compatible with Cub Cadet ZT1-42 ZT1-46 ZT1-50 ZT1-54 ZT2-50 ZT2-54 MTD Z510 Z530 Z550 Z560 Z5200 - Replaces 725P12066 925-12066
3-position, 6-pin ignition switch with two yellow keys for Cub Cadet and MTD zero-turn mowers.
725-12066 ignition switch and two keys with dimension diagram showing 5cm width and 4.75cm height.
725-12066 3-position 6-pin ignition switch with yellow key for Cub Cadet and MTD lawn mowers.
Technical diagram showing 3-position, 6-terminal ignition switch features and pin layout for Cub Cadet and MTD mowers.
725-12066 3-position 6-pin ignition switch with keys for Cub Cadet and MTD lawn mowers.
Compatibility chart for 725-12066 ignition switch listing Cub Cadet, MTD, and Troy Bilt mower models.
Infographic showing brass-plated terminals, ABS housing, and keys for 725-12066 ignition switch construction.
725-12066 3-position ignition switch with keys and installation instructions for Cub Cadet and MTD mowers.
725-12066 3-position 6-pin ignition switch with yellow key for Cub Cadet and MTD lawn mowers.
3-position, 6-pin ignition switch with two yellow keys for Cub Cadet and MTD zero-turn mowers.
725-12066 ignition switch and two keys with dimension diagram showing 5cm width and 4.75cm height.
725-12066 3-position 6-pin ignition switch with yellow key for Cub Cadet and MTD lawn mowers.
Technical diagram showing 3-position, 6-terminal ignition switch features and pin layout for Cub Cadet and MTD mowers.
725-12066 3-position 6-pin ignition switch with keys for Cub Cadet and MTD lawn mowers.
Compatibility chart for 725-12066 ignition switch listing Cub Cadet, MTD, and Troy Bilt mower models.
Infographic showing brass-plated terminals, ABS housing, and keys for 725-12066 ignition switch construction.
725-12066 3-position ignition switch with keys and installation instructions for Cub Cadet and MTD mowers.
725-12066 3-position 6-pin ignition switch with yellow key for Cub Cadet and MTD lawn mowers.
Lifetime Warranty

[Lifetime Warranty] 725-12066 Ignition Switch 3 Position 6 Pin with Keys - Compatible with Cub Cadet ZT1-42 ZT1-46 ZT1-50 ZT1-54 ZT2-50 ZT2-54 MTD Z510 Z530 Z550 Z560 Z5200 - Replaces 725P12066 925-12066

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725-12066 Ignition Starter Switch

Key Features

  • 3-position switch: Off, On, Start
  • 6-pin electrical connector
  • Operating Voltage: 12 Volts (DC)
  • Includes two matching keys
  • Designed for direct, plug-in installation

Replaces / Cross-Reference Part Numbers

  • 925-12066
  • 725P12066
  • 925P12066

Compatibility & Fitment

  • Cub Cadet Models: ZT1-42, ZT1-46, ZT1-50, ZT1-54, ZT2-50, ZT2-54, ZTX6-60
  • MTD Models: Z510, Z5200, Z530, Z5450, Z550, Z560
  • Troy-Bilt Models: Z42, Z50, Z54, 54XP

When to Replace

  • Engine fails to crank or start
  • Power is intermittent to the electrical system
  • Key is loose, broken, or will not turn properly
  • No "click" or response when turning the key to the start position
  • Visible corrosion or damage to switch terminals

Installation Tips

  • Disconnect the negative battery terminal before beginning installation.
  • Photograph the wiring harness connection to the old switch for reference.
  • Ensure the replacement switch is securely seated in the dash panel.
  • Confirm all pins are correctly aligned and the connector is fully seated.
  • Reconnect the battery and test all key positions before operating the machine.
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  • FIXING SYMPTOMS

    FIXING SYMPTOMS

    Engine won't start | No power to starter | Key won’t turn or feels loose | Engine dies when releasing key
  • DURABLE MATERIAL

    DURABLE MATERIAL

    This part is made of high-quality ABS Plastic which is flame-retardant, enhancing durability
  • BEST SOLUTION

    BEST SOLUTION

    Enjoy the great feeling when your tractor is repaired and works like before - BlueStars brings DIY solutions to help you deal with any trouble
  • IMPORTANT NOTE

    IMPORTANT NOTE

    This is a replacement part designed to be compatible with certain appliances. Any brand names mentioned are used solely to indicate compatibility
Enjoy your fresh garden with the support of our replacement part!

Enjoy your fresh garden with the support of our replacement part!

Brand Model Number
MTD (Part Numbers) 725-12066, 725P12066, 925-12066
Cub Cadet (Ultima & Z Series) ZT1, ZT2, ZTX4, ZTX5, ZTX6, ZT1-42, ZT1-46, ZT1-50, ZT1-54, ZT2-50, ZT2-54, ZT2-60, ZT3-60, ZTX4-48, ZTX4-54, ZTX4-60, ZTX5-48, ZTX5-54, ZTX5-60, ZTX6-48, ZTX6-54, ZTX6-60, Z510, Z530, Z550, Z560, Z5200, Z5400, Z5450, Z5600, Z5650, Z5800
Troy-Bilt (Z Series) Z42, Z56, Z50, Z54, 54XP, Z148, Z160, Z254, Z260
Note Please carefully check your engine model and the part number & size of your parts before purchasing. You can send us your model number, we will help you confirm the compatibility

FAQ

This 3-position, 6-pin ignition switch is commonly used on select Cub Cadet and MTD zero-turn mowers. Based on the available fitment information, it is compatible with Cub Cadet ZT1-42, ZT1-46, ZT1-50, ZT1-54, ZT2-50, and ZT2-54, plus MTD Z510, Z530, Z550, Z560, and Z5200. Because ignition switches must match both the terminal count and wiring layout, it's best to confirm your original switch part number and that your mower uses a 6-pin, 3-position switch before ordering.
This switch replaces part numbers 725-12066, 725P12066, and 925-12066. Matching the part number on your original switch or your model's parts list is the most reliable way to confirm fit.
A 3-position switch typically has OFF, RUN, and START key positions. The 6-pin design refers to the number of electrical terminals on the back of the switch. Both details matter: even if another switch looks similar, the wrong number of positions or terminals can prevent starting, disable accessories, or create wiring issues.
Typical symptoms include the mower not cranking when the key is turned, intermittent starting, a key that feels loose or binds in the cylinder, dash power cutting in and out, or a switch that only works if the key is held in a certain position. Before replacing the switch, also check the battery charge, cable connections, main fuse, seat switch, brake switch, PTO switch, and starter solenoid, since those can cause similar no-start symptoms.
On many zero-turn mowers, replacing the ignition switch is a fairly straightforward job that takes about 15 to 30 minutes. You usually need basic hand tools to access the back of the dash, remove the retaining nut, unplug the wiring connector, and install the new switch. Disconnect the battery first to avoid accidental shorting, and take a photo of the wiring before removal if your machine does not use a single molded plug.
First verify that your original switch uses the same 6-pin terminal layout and matches one of these part numbers: 725-12066, 725P12066, or 925-12066. Inspect the wiring connector for heat damage, corrosion, loose terminals, or melted plastic, since a damaged harness can make a new switch seem faulty. It is also a good idea to confirm the battery is fully charged and that the mower's safety interlock system is working properly before testing the new switch.