SL-305 Throttle Control Cable (Conduit Size 48",Inner Wire Size 54.5") Fits Most Walk-Behind Mower

What It Is

The SL-305 Throttle Control Cable is a universal replacement part designed to connect the throttle lever on the handle of most walk-behind mowers to the engine carburetor or governor. It controls engine speed (choke, fast, slow, stop) and is commonly used on residential mowers with standard push or self-propelled designs.

Fitment & Compatibility

Before buying, measure your existing cable or the distance from the handle lever to the carburetor linkage. The SL-305 has a 48-inch conduit (outer sheath) and a 54.5-inch inner wire. This fits most mowers with a 21–22-inch deck and a standard handle-to-engine routing. It is an aftermarket universal cable—not OEM-specific—so check if your mower brand is listed as compatible (e.g., MTD, Craftsman, Troy-Bilt, Husqvarna, Toro). Verify the end fittings: one end should have a barrel or loop that matches your throttle lever, and the other a Z-bend or clip for the carburetor arm. If your cable requires a 90-degree bend or a different end style, this may not work.

Key Things to Know

• Quality is average: Users report the conduit is slightly thicker than OEM, which can make routing through existing guides or clips tight. Expect to file or enlarge the opening slightly.
• Installation is moderate: You’ll need to remove the old cable, route the new one along the handle, and adjust the inner wire length by loosening the set screw on the lever. Allow 30–60 minutes.
• Common gotcha: The 54.5-inch inner wire may be a touch longer than needed for some mowers, requiring you to cut and re-crimp the end (a cable stop or solder is helpful). Have wire cutters and a small file ready.
• Not for zero-turn or riding mowers: This is strictly for walk-behinds with a simple push-pull throttle action. Check that your mower doesn’t use a choke-only cable or a separate safety interlock.

Should You Buy It

Buy this if you need a budget-friendly, universal replacement for a common walk-behind mower and are comfortable with minor adjustments (cutting the inner wire or enlarging the conduit hole). Skip it if you want a precise OEM fit, have an unusual cable routing, or prefer a plug-and-play installation—look for a brand-specific cable instead.