News - How do you rebuild or overhaul a small engine carburetor?

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How do you rebuild or overhaul a small engine carburetor?

time2017/07/07

: Rebuilding the carburetor may be required if basic adjustments don’t fix your small engine problems or improve performance on your lawn mower or outdoor power equipment. Follow the steps below for overhauling small engine carburetors.

How do you rebuild or overhaul a small engine carburetor?

Rebuilding the carburetor may be required if basic adjustments don’t fix your small engine problems or improve performance on your lawn mower or outdoor power equipment. Follow the steps below for overhauling small engine carburetors.

See an authorized dealer or contact Briggs & Stratton if you are unsure of any procedure or have additional questions. Find all Engine Safety Warnings

Step 1: Removing the Carburetor

Step 2: Disassembling A Float-Type Carburetor

Step 3: Inspecting the Carburetor

Step 1: Removing the Carburetor

Disconnect the spark plug lead and secure it away from the spark plug. Then, remove the air cleaner assembly.

Turn off the fuel valve at the base of the fuel tank. If your engine does not contain a fuel valve, use a fuel line clamp to prevent fuel from draining out of the tank while the carburetor is disconnected from the engine.

Disconnect the spark plug lead and secure it away from the spark plug. Then, remove the air cleaner assembly.

With the carburetor still connected to the governor, unfasten the carburetor mounting bolts. If a connecting pipe joins the carburetor to the engine block, first remove the pipe mounting bolts. Then, disconnect the carburetor from the pipe by removing the nuts and sliding the carburetor off the studs. Sketch the governor spring positions before disconnecting them to simplify reattachment.

Then, disconnect the governor springs and remove the carburetor, taking special care not to bend or stretch links, springs or control levers

Step 2: Disassembling A Float-Type Carburetor

Your carburetor contains a small amount of fuel. Prepare a clean bowl to catch dripping fuel and store small parts. During disassembly, inspect the bowl for dirt and debris to determine the condition of your carburetor. Remove the fuel bowl from the carburetor body. The fuel bowl may be attached with either a bolt or the high-speed mixture screw.

Step 3: Inspecting the Carburetor

Soak metal and plastic carburetor parts in all-purpose parts cleaner for no more than 15 minutes to remove grit. Or, while wearing safety glasses, spray the parts with carburetor cleaner. Then, wipe away solvent and other residue thoroughly using a clean cloth. Never use wire or tools because they can damage or further obstruct plugged openings.

Inspect all components and use additional carburetor cleaner to loosen stubborn grit and to clear obstructions.

Replace any parts that are damaged or permanently clogged.