Tecumseh engine parts carburetor

Types of Tecumseh Engine Parts Carburetor

Tecumseh carburetors are categorized according to the number of barrels and their configuration. Barrel refers to the shape of the carburetor, which is similar to a beer barrel. It also refers to the number of passages that supply air to the engine. A Tecumseh carburetor with one passage will have a single barrel, while a carburetor with two passages will have a double barrel.

Barrel configuration includes:

• Single Barrel Carburetor

  A single barrel carburetor has one air passage that provides a mixture of air and fuel to the engine. It is simple and easy to use. Single barrel carburetors are used in engines with small displacement and low power. The Tecumseh 640350 carburetor is a single barrel carburetor.

• Double Barrel Carburetor

  Double barrel carburetors have two air passages that supply the air-fuel mixture to the engine. They provide better throttle response and power. Double barrel carburetors are used in engines with high displacement and power. Tecumseh 640347 carburetors are double barrel carburetors.

• Flat-Slide Carburetor

  Flat-slide carburetors have a sliding piston that controls the airflow to the engine. They offer better throttle response and are commonly used in racing engines. Tecumseh 640349 carburetors are flat-slide carburetors.

• Rotary Valve Carburetor

  Rotary valve carburetors use a rotating valve to control the air-fuel mixture delivered to the engine. They are efficient and provide a precise air-fuel mixture. Rotary valve carburetors are used in Tecumseh engines that require optimal performance.

• Variable Venturi Carburetor

  Variable Venturi carburetors automatically adjust the air-fuel mixture according to the engine's speed and load. This ensures optimal performance and fuel efficiency. Tecumseh 640350A and 640350B carbs are variable venturi carburetors.

Specifications and Maintenance of Tecumseh Engine Parts Carburetor

Here are some general specifications of the Tecumseh carburetor that vary depending on the model.

• Airflow Capacity

  The airflow capacity determines how much air the carburetor can move. It is measured in cubic feet per minute (CFM). Higher airflow capacity allows more excellent engine performance.

• Orifice Size

  The orifice size measures the diameter of the fuel and air mixture passages in the carburetor. Larger orifices provide more excellent fuel delivery for high-performance engines.

• Jet Size

  Jet size indicates the diameter of the fuel metering hole in the carburetor. Jet size controls the fuel flow rate into the engine. Tecumseh carburetors have different jet sizes for various engine models.

• Choke Type

  Choke type controls the air entering the carburetor during engine startup. It helps the engine start quickly and run smoothly. Common choke types include manual, automatic, and electric chokes.

• Throttle Type

  The throttle controls the amount of air and fuel entering the engine, regulating engine speed and power output. Tecumseh carburetors use rotary and diaphragm throttles.

Below are some general tips on how to maintain Tecumseh carburetor parts.

• Regular Inspection

  Inspect the carburetor and its components regularly to ensure they are in good condition. Check for wear, cracks, or damage to gaskets, diaphragms, and valves.

• Cleaning

  Clean the carburetor regularly using a carburetor cleaner to remove carbon deposits, dirt, and varnish buildup. Pay special attention to jets, orifices, and fuel passages.

• Replace Worn Parts

  Replace any worn or damaged parts, such as gaskets, diaphragms, valves, and seals. Use genuine Tecumseh replacement parts to ensure proper fit and function.

• Fuel Quality

  Use fresh, high-quality fuel recommended by Tecumseh for optimal engine performance. Avoid using stale or contaminated fuel, which can cause carburetor problems.

• Adjustments

  Make necessary carburetor adjustments, such as idle speed and mixture settings, according to the manufacturer's specifications. Improper adjustments can affect engine performance and emissions.

• Storage

  If the engine is not used for a long time, take appropriate measures to maintain the carburetor. Drain old fuel from the carburetor and fuel system before prolonged storage.

How to choose Tecumseh carburetors

When choosing carburetors for small engines, buyers should consider the following:

• Engine Size and Type

  Buyers should select carburetors that are the right size for the small engines in their equipment. Carburetors that are too big or too small will not work properly and could cause engine problems. They should also consider whether the engine runs on gasoline or another fuel when selecting a carburetor.

• Quality and Reliability

  Buyers should look for carburetors from brands that are known for being high quality and dependable. The carburetor controls the fuel going into the engine, so it needs to work consistently. Tecumseh carburetors are trusted by many because of their quality.

• Maintenance and Serviceability

  Buyers should choose carburetors that are easy to maintain and fix if needed. Features like accessible air filters and fuel adjustment screws make it simple to tune and clean the carburetor. They should also consider how easy it is to get replacement parts like gaskets and jets.

• Emissions Control

  Many places have rules about how much pollution an engine can emit. Buyers should select carburetors with features that help reduce emissions to comply with regulations. This is important for both environmental protection and legal reasons.

• Performance

  The carburetor impacts how well the engine runs. Buyers should choose carburetors that provide good throttle response and power output for their needs. For example, if the equipment requires fast acceleration, the carburetor should support that performance.

• Cost

  As with any part, buyers should consider the carburetor's cost in relation to its value. The carburetor should fit within the equipment's budget while still providing features and quality needed for proper engine function.

• Recommendations

  Buyers can consult with mechanics or other experts for advice on which carburetors work best with their engines. People with experience using and fixing carburetors will have useful information.

How to DIY and Replace Tecumseh Carburetor Parts

Replacing the Tecumseh carburetor parts is a simple process that can be done with basic hand tools. The first step is to gather all the necessary tools, which include new carburetor parts, a screwdriver, pliers, a socket wrench, and a torque wrench. Follow the simple steps below to replace the carburetor:

• Disconnect the Tecumseh engine parts carburetor

  Start by disconnecting the battery and draining the fuel from the carburetor. After that, remove the air filter and disconnect the carburetor from the engine using a screwdriver and a socket wrench.

• Remove the old carburetor

  Once loose, lift the carburetor off the engine. Next, disconnect the linkages and the fuel line from the carburetor using pliers.

• Install the new carburetor

  Place the new carburetor onto the engine and reconnect the linkages and fuel lines. Then, use a torque wrench to tighten the bolts to the manufacturer's specifications.

• Reconnect the air filter

  Reconnect the air filter to the carburetor and the carburetor to the engine. Then, reconnect the battery and fill the carburetor with fuel.

• Test the engine

  Start the engine and make necessary adjustments to ensure it's running smoothly. Once satisfied, reassemble any remaining parts and components.

It's important to follow the manufacturer's instructions and specifications when replacing carburetor parts. If unsure or uncomfortable with the process, it's always best to seek professional help.

Q &A

Q1: How can I know if a Tecumseh carburetor is 2 stroke or 4 stroke?

A1: It's easy to know if a Tecumseh carburetor is 2-stroke or 4-stroke. Users should check the engine manual or look at the engine itself. If the engine manual mentions ""mixed gas"" or if the engine has a gas-oil mix tank, then it's 2-stroke. Most 2-stroke engines are smaller and have a simpler design. For larger engines with separate oil and gas tanks, the manual will provide the answer. The manual is the most reliable source.

Q2: What is the most common problem with Tecumseh carburetors?

A2: The most common problem with Tecumseh carburetors is difficulty in starting or poor running. This is usually from wear or damage to the carburetor parts. Users should inspect the gaskets, float, needle valve, and diaphragm. Tecumseh carburetor repair parts can fix worn components. Cleaning is also key. Dirty jets or a clogged fuel passage can cause running issues. Even a small speck of dust can block fuel flow. Users should regularly clean all parts of the carburetor to prevent problems.

Q3: How do I adjust a Tecumseh carburetor for more power?

A3: Users should be careful when adjusting the carburetor. An overly rich mixture can damage the engine. To adjust safely, turn the mixture screws slightly. If the engine runs rough, the mixture is too rich. Lean it out a bit and test again. For more power, increase the throttle opening. Check the governor settings as well. It controls engine speed. The governor may need adjustment if higher speeds are desired.

Q4: Can I use a Tecumseh carburetor on any small engine?

A4: No, each carburetor is made for a specific engine model. The carburetor must match the engine size and type listed in the manual. Using a carburetor not designed for the engine can cause poor performance or damage. Tecumseh carburetors are matched to Tecumseh engines. For other brands, look for carburetors specified for that engine make.

Q5: What fuel should I use with my Tecumseh carburetor?

A5: Most Tecumseh carburetors require regular unleaded gasoline. Users should avoid fuels with high ethanol levels above 10%. Ethanol can harm some parts of the carburetor over time. If the engine manual mentions a different fuel requirement, follow that guidance. Additives are not needed unless the manual specifies one.