Ignition Switch Starter Solenoid Kit for Toro Zero Turn Lawn Mower, Replace 117-2221 137-4100 117-1197, Fit Exmark Lazer Z Titan TimeCutter Quest Z Master, Toro Lawn Mower Parts

What It Is

This ignition switch starter solenoid kit controls the electrical circuit that engages the starter motor on Toro and Exmark zero-turn mowers. It’s designed for residential and commercial mowers that use the OEM part numbers listed, typically found on models from the mid-2000s onward.

Fitment & Compatibility

Before buying, verify your mower’s OEM part number matches one of these: 117-2221, 137-4100, or 117-1197. This kit fits select Toro TimeCutter, Z Master, and Quest models, plus Exmark Lazer Z and Titan series. Check your mower’s model number (not just the brand) against the manufacturer’s compatibility list—deck size alone isn’t enough. Measure the solenoid’s mounting hole spacing (typically 2.25 inches center-to-center) and terminal layout (three spade terminals, one large post) to confirm physical fit. This is an aftermarket replacement, not OEM Toro, so verify wire gauge and connector type match your harness.

Key Things to Know

• Quality: Aftermarket part; may have slightly thinner wire insulation than OEM. Inspect for clean terminal crimps before installation.
• Installation difficulty: Easy for DIYers with basic wiring skills. Disconnect battery first, label wires, and use a multimeter to confirm continuity.
• Common gotcha: The solenoid’s ground path is through the mower frame—ensure clean, rust-free contact at the mounting point.
• Warranty: Only 1 review (5-star) means limited long-term reliability data. Keep your old solenoid as a backup.

Should You Buy It

Buy this if you need a budget-friendly, direct-fit replacement for a failed solenoid on a compatible Toro or Exmark zero-turn and you’re comfortable with basic electrical work. Skip it if you want OEM reliability or have a model outside the listed part numbers—verify fitment first to avoid returns.