946-04206A Variable Speed Drive Cable for MTD, Troy-Bilt, Cub Cadet 500 Series Walk-Behind Mowers Replaces 746-04206A/946-04206/290-925

What It Is

This variable speed drive cable controls the ground speed on MTD, Troy-Bilt, and Cub Cadet 500 Series walk-behind mowers. It connects the speed control lever to the transmission, allowing you to adjust forward speed while mowing.

Fitment & Compatibility

Before buying, verify your mower model number (found under the seat or on the frame). This cable replaces OEM part numbers 746-04206A, 946-04206, and 290-925. It fits most 500 Series mowers with variable speed transmissions, including models with 21” to 22” decks. Check that your mower uses a single cable (not a dual-cable system) and measure the cable length—this is typically 40-42 inches from end to end. It will not fit fixed-speed or single-speed mowers.

Key Things to Know

• Quality: This is a direct OEM replacement, not a generic aftermarket cable. Expect the same fit and durability as the original.
• Installation: Moderate difficulty—requires removing the speed control lever and routing the cable along the handlebar. Allow 30-45 minutes. Disconnect the spark plug first.
• Common gotcha: The cable end at the transmission is a plastic clip that can break if forced. Lubricate the cable with light oil before installation to prevent binding.
• Adjustment: After install, you may need to adjust the cable tension at the transmission bracket to get full speed range.

Should You Buy It

Yes, if your MTD, Troy-Bilt, or Cub Cadet 500 Series mower has a loose, stiff, or broken speed control. At $9.49, it’s a cheap fix that restores smooth variable speed operation. Avoid if your mower uses a different cable system or has transmission damage beyond the cable.