Try-H Brake Control Module for Toro Timecutter & Exmark — Direct-Fit OEM Replacement (121-3017)

Try-H 121-3017 brake control module is a direct-fit electronic control unit that restores precise braking response for compatible Toro Timecutter and Exmark Quest models.

This replacement brake control module (also referenced as 115-9660, 120-7144, and 1213017) is designed to match the original equipment's mounting and electrical connections while improving real-time braking management. Built from impact-resistant ABS and tuned for fast electronic response, the module monitors operating conditions and applies braking corrections to help maintain control across varied mowing terrain. Before ordering, verify your mower model and OEM part number to ensure compatibility.

Which mower models will this Try-H module fit?

The unit is manufactured to fit specific Toro Timecutter and Exmark Quest models from the listed years. Confirm the OEM number (121-3017, 115-9660, 120-7144) on your existing module or in your mower parts manual to avoid returns.

• Toro Timecutter fitments: 2012–2014 models including 74385–74390, 74395, 74616, 74620–74643 series.
• Exmark Quest E/S Series: QT22KA421, QT24KA501, QTE651KA421, QTE691KA501, QTS691KA422.
• Replaceable OEM numbers: 121-3017, 115-9660, 120-7144, 1213017.

How does the module improve braking performance on slopes and uneven ground?

The control unit continuously monitors mower operating status and makes rapid braking adjustments to maintain stability. Its electronic logic aims to reduce abrupt stops while providing predictable deceleration when needed.

• Real-time sensing adjusts braking for varied terrain.
• Fast-response electronics minimize lag between input and brake action.
• Optimized control reduces the risk of wheel lock or over-braking.

What materials and durability features does this replacement include?

Try-H builds the housing from ABS, a durable thermoplastic known for impact resistance and long service life. The robust casing protects internal electronics from shocks encountered during typical lawn and grounds work.

• ABS housing for improved impact resistance and longevity.
• Sealed design to protect internal circuitry during normal use.
• Manufactured to OEM fit and connection specifications for straightforward installation.

How easy is installation and what should I check before replacing the module?

Installation is straightforward when the replacement matches your mower's original connector and mounting pattern. Always disconnect the battery and refer to your mower's service manual; if unsure, a qualified technician can complete the swap quickly.

• Verify part number on existing module before purchase.
• Disconnect power and follow manufacturer safety procedures for installation.
• Test operation after installation to confirm proper brake response.

Who is this for? Lawn care professionals, fleet managers, and homeowners who operate compatible Toro Timecutter or Exmark Quest mowers and need a reliable OEM-style replacement module will benefit from this Try-H unit. It’s aimed at users who require predictable braking performance, a durable housing to withstand routine use, and a direct replacement that reduces downtime when a control module fails. If you maintain machines across multiple models, confirming OEM numbers and fitment lists will ensure the correct match and fast return to service.