CLSR2U 846639 Fuel Shut-Off Solenoid for B&S Engines – Compatible with Major Lawn Mowers

Overview

Upgrade your lawn and garden toolkit with the CLSR2U 846639 Fuel Shut-Off Solenoid. Engineered to interrupt fuel flow when the ignition is turned off, this solenoid helps simplify maintenance and supports reliable stop/start control for a range of popular engines. Replacing a worn or damaged unit may improve how your mower responds at shutoff, and it’s designed to fit select Briggs & Stratton engines as well as common riding mowers from John Deere, Husqvarna, and Craftsman.

Why it matters

Fuel shut-off devices like this solenoid can contribute to smoother engine behavior during power-off events and routine servicing. While outcomes can vary by model and condition, users often notice fewer fuel-related hiccups and a more predictable shutdown process when installed with a good seal and proper line closure.

Key compatibility

• Compatible with select John Deere серии JD E100, Craftsman T110, Husqvarna YTH1842 riding mowers, and more.
• Matches Briggs & Stratton engines such as 21R702-0003-F1, 21R706-0062-F1, 21R772-0025-H1, 21R707-0001-F1, 31R907-0062-G1, 33R877-0032-G1, 305772-0001-B1, 305777-0033-G1, 331977-0004-G1, among others.

What’s included

• Fuel shut-off solenoid x1
• Washer x1
• Wire harness x2
• Dimensions: height 1.72", bottom diameter 1.02"

Installation tips

Easy replacement is designed to minimize downtime. Before swapping, clamp the fuel line to prevent fuel loss, disconnect the old unit with a wrench, and thread the new solenoid in place. Ensure the fuel line is closed off during installation to avoid spills. The included wiring harnesses help simplify connection and may support a clean, secure setup.

Real-world use and benefits

In everyday use, this solenoid is built to withstand outdoor environments and offer a straightforward swap for compatible engines. Users may appreciate the convenience of a part that aligns with common OEM numbers, such as B&S 846639, and the assurance of a complete package that includes essential hardware.

Notes for shoppers

• Please verify your original part number before purchase to ensure proper fitment.
• This solenoid is intended for use with fuel-injection systems and should be installed by someone comfortable with fuel lines and electrical connections.