Ignition Switch 3 Postion for ExMark Toro 117-2221 137-4100 Z Master Time Cutter SS ZS Series Titan Lazer Z Quest Next Lazer Z Zero Turn Lawn Mower

What It Is

This is a 3-position ignition switch (Off/On/Start) designed as a direct replacement for ExMark and Toro zero-turn mowers, specifically models in the Z Master, Time Cutter, SS ZS Series, Titan, Lazer Z, Quest, and Next Lazer Z lines. It controls the electrical system for starting and shutting down the engine.

Fitment & Compatibility

Before buying, verify the following:

• OEM Part Numbers: This switch replaces ExMark 117-2221 and Toro 137-4100. Cross-check your mower’s parts diagram or existing switch number.
• Mower Models: Fits ExMark Z Master, Lazer Z, Quest, and Next Lazer Z; also Toro Time Cutter, SS ZS Series, and Titan zero-turn mowers. Deck size (42–60 inches) is not a factor—fit depends on the control panel design.
• Physical Check: Measure the mounting hole diameter (typically 1.18 inches) and ensure the switch body depth clears your panel. Some newer models may use a different key pattern or terminal layout.
• Aftermarket vs OEM: This is an aftermarket replacement, not Toro/ExMark branded. It should match OEM specs, but verify terminal labeling (B, S, M, G) matches your wiring harness.

Key Things to Know

• Quality: Rated 4.6/5 from 223 reviews. Users report it works as a direct drop-in with no modifications on most listed models.
• Installation Difficulty: Easy—requires basic hand tools (socket/wrench to remove nut, possibly a flathead screwdriver for wire terminals). Disconnect the battery first.
• Common Gotchas: The key may differ slightly in shape from OEM; ensure it turns smoothly. If your mower has a safety interlock module, the switch must be wired correctly to avoid no-start conditions.
• Wiring: Take a photo of the old switch’s wire positions before removing. The three positions are Off, On (run), and Start (spring-return). Miswiring can cause continuous cranking or no power.

Should You Buy It

This is a solid, affordable replacement if your OEM switch is worn or failed (e.g., no crank, intermittent power). It’s ideal for DIY owners of the listed ExMark or Toro zero-turn mowers who want a quick fix without dealer pricing. Avoid if you need an exact OEM key shape or have a model with a unique safety circuit not listed.