Rebuilding a Tecumseh carb involves disassembling and cleaning the carburetor, replacing any worn-out or damaged parts, and then reassembling it. The following is a general guide on how to rebuild a Tecumseh carburetor.
Materials and Tools Needed
Tecumseh carburetor rebuild kit
Bowl gasket for float carburetor (if not included with rebuild kit)
Fuel hose clamp for models without fuel shut off valve (vice grips may substitute)
Socket set and wrenches
Screwdrivers
Needle-nose pliers
Carburetor cleaner
Compressed air
Small wire or carburetor cleaning brushes
Gloves and safety glasses
Carb Rebuild Instructions
Safety
Before starting any work on the carburetor, make sure the engine is turned off and has cooled down. Wear safety glasses and gloves to protect your eyes and hands.
Remove the Carburetor
Depending on the engine and equipment, you may need to remove the air filter housing and other components to access the carburetor. Shut off fuel valve or clamp fuel line as required. Disconnect the fuel line and throttle linkage, and then remove the carburetor from the engine. This usually requires removing bolts and nuts with sockets and/or wrenches.
Disassemble the Carburetor
Take note of the carburetor's orientation before disassembly. Carefully disassemble the carburetor, removing the float bowl, float, needle, and other components. Pay attention to the order of the parts as you remove them. Taking photos with your phone can help with aiding in proper reassembly.
Clean the Carburetor
Use carburetor cleaner to clean all the components thoroughly. Remove any dirt, varnish, or old gaskets. You can use small brushes, wire, or compressed air to clean out the small passages and jets. Make sure all parts are completely free of debris.
Inspect and Replace Parts
Examine all the parts for wear and damage. Replace any damaged or worn-out components with the new ones from the rebuild kit. Common parts to replace include gaskets, O-rings, needles, damaged or corroded flaot bowl and jets.
Reassemble the Carburetor
Carefully reassemble the carburetor, ensuring all parts are in the correct order. Pay attention to the orientation of gaskets and other components. Use new float bowl gaskets to prevent leakage. Tighten screws and bolts to the specified torque.
Adjust the Float Level (if applicable)
If your carburetor has an adjustable float, set it to the correct level according to the manufacturer's specifications. This ensures proper fuel delivery.
Install the Carburetor
Reattach the carburetor to the engine, reconnect the fuel line, and reassemble any components you removed earlier.
Test the Engine
Start the engine and let it run for a few minutes to ensure the carburetor is functioning properly. Check for any leaks, and adjust the idle and mixture settings if necessary.
Fine-Tune if Needed
If the engine is not running smoothly, you may need to fine-tune the carburetor settings. Refer to the engine's manual for specific instructions on adjustment.
Always consult the specific Tecumseh engine manual for detailed instructions and specifications tailored to your engine model. Additionally, it's a good idea to take pictures during disassembly to help you remember the correct assembly order.
For more detalied information on how to rebuild a Tecumseh carb view the Carburetor Identification, Troubleshooting and Service Manual
View all Tecumseh Service and Repair Manuals