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How do I rebuild a 1974 Bendix carburetor with a fixed main jet?

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You clean only and check fixed jet with a fine wire .personally do not like them

Posted on Apr 07, 2015


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My snowblower starts then stalls

Rob; 95% sure it is a carburetor issue, dirt clogging a port or jet,float sticking. I will post a few sights below to show how to clean carb.

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I have a craftsman rear engine riding mower that

Clean and rebuild the carburetor usually takes care of this as the main jet and idle ports are probably clogged with harden fuel deposits.

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Aug 08, 2014 | 1974 Volkswagen Super Beetle Carburetor...

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Engine ideals but wont rev

Carburetor has a blockage at the main jet. Recommend carburetor overhaul.

Apr 06, 2014 | Briggs & Stratton Garden

1 Answer

Wont start

    • 1 Remove the seat by unscrewing the bolts found on the four corners of the seat. Remove the clamps from the top of the air box using a pair of pliers to access and remove the air filter. The air filter is removed by unscrewing the wing nut and sliding the filter out of the box. Loosen the hose clamp that connects the carburetor to the intake manifold, using a screwdriver.
    • 2 Loosen the fuel delivery hose clamp with a screwdriver and pull the carburetor out of the Blaster. Before troubleshooting the carburetor, it's important to note whether you've made a significant change in altitude or a change in your exhaust/intake setup. If you've made an altitude change, installed an aftermarket exhaust pipe or modified your air box, the jets will need to be changed. Refer to your manual for specific re-jetting instructions based on your altitude. Your exhaust kit will provide a recommended jetting setup. Do-it-yourself modifications like removing an air box will require you to experiment with the jet setup until you find the right one.
    • 3 Disassemble the carburetor by unscrewing the bowl screws from the bottom of the carburetor. With the bowl removed, the float, pilot jet and main jet will be exposed. To remove the pilot and main jet, unscrew them from their respective holes. The main jet will sit in the exact center of the bowl, while the smaller pilot jet will be set just below the main jet.
      Use a blunt object like a stick or rod to push the bottom of the needle receiver assembly out of the carburetor. The needle receiver (which houses the needle jet) will slide out of the top of the carburetor along with the slide, spring, carburetor cap and gasket. The carburetor is now completely disassembled and ready to be inspected.
    • 4 Inspect the pilot jet for blockage, slide a thin wire through the pilot jet's hole, spray it with carburetor spray and blow the center hole with compressed air. Repeat this process with the main jet. If there is any blockage or wear, replace the jets. If you have made altitude changes or exhaust/intake modifications, insert jets that correspond to your changes as recommended in your manual. Note that this may take some experimentation with different jets to get the correct jet setup, as there are many jet sizes for different scenarios.
    • 5 Inspect the bowl, floats and ports for any signs of debris or gunk. If debris or gunk is found, remove it using a spray carburetor cleaner, soft wire brush, or thin wire (to insert into small orifices). If no gunk or debris is found, you've ruled this out as a possible cause for the starting issues, and can focus on the replacement of carburetor components.
    • 6 Look for abnormal wearing on the jets, float valve, gaskets, O-rings and springs. If you have not changed altitude or modified your bike in any way, then it is best to inspect these components. Any one of these components, or a combination, may be contributing to your starting issues. You may choose to replace individual parts such as a new float valve, though replacing all the interior components with a carburetor "rebuild kit" is advised. Rebuild kits can be ordered online or through your dealer, and will ensure your carburetor is fully repaired.
    • 7 Slide the gasket, spring, spring holder and needle jet assembly back onto the carburetor cap and insert the assembly into the top of the carburetor. Screw the main jet into the bottom of the needle jet assembly by accessing it through the bowl area. Screw the pilot jet back into its hole below the main jet. Clip the float valve onto its hinge within the bowl a insert the bowl gasket. Screw the bowl to the bottom of the carburetor to complete the re-assembly process.
    • 8 Re-attach the carburetor to the intake manifold using the hose clamp and screwdriver. Slide the fuel feeder line onto the brass receiver port on the side of the carburetor and slide the air box boot over the carburetor's intake port, which should be facing toward the back of the bike. Re-install the air filter with its wing nut, slide the clips over the air box top to secure it to the box and slide the seat into place. Re-install the seat screws to complete the re-assembly process.
    • 9 Prime the carburetor by twisting the throttle once and start the Blaster.

Jan 14, 2013 | Yamaha V Star 1100 Custom Motorcycles

1 Answer

I have a 7yr old MTD driver mower model B155 (285H77). Today it refused to start. The ignition switch would not turn the engine. Quite dead. Worked fine last week. I live in rural France miles from any...

First use starting fluid or carburetor cleaner squirt into carburetor and see if engine attempts to start. If it does then the main carburetor jet is probably plugged. The main jet is usually the bolt that holds the float bowl on. Sometimes this can be an adjustable jet. If it looks like a standard bolt head then remove it and make sure the jet holes are clean. One hole on each side and one vertical to connect to the thru holes from each side. If these are clean then the carburetor needs a rebuild kit and extensive cleaning.
2. If engine did not try to start check for spark. If no spark the ignition coil on the flywheel may need replacing or the spark plug may be completely fouled.

Remember this unit only needs fuel air and spark. then these are in the correct ratio the engine will run.

Oct 22, 2017 | Mtd Garden

1 Answer

Hi! I just rebuilt my 1974 dt 360 A. and new top end but it smokes badly? new 60 over wisco piston and sent to US Chrome to rework it newly rebuilt crank. all new seals and gaskets. So What Up? can you...

Smoke in a two stroke motor is caused by two things. 1) Even a four stroke will smoke if it has too rich of a mixture or a carburetor that has a malfunctioning choke (a new choke plunger would fix this). Make sure you have a good o-ring on the main jet holder. This was a common problem on old Yamaha two stroke carburetors.2) The type of oil you are using is of a very low grade. Smokeless oils and synthetic oils will smoke less and could solve the problem.
You could just be seeing old residue burning out of the exhaust system, try cleaning the baffle. When you rebuilt the motor did you use a semi drying liquid type gasket material between the two case halves? This would keep transmission oil from leaking into the crankcase. If you have only started the motor in the driveway you may have to just go out for a long drive down the road to clean up all the systems.

Jan 08, 2011 | 1974 Yamaha DT 360

1 Answer

Lawn nmower starts then stops like it is out of gas

Sounds like you will need to clean your carburetor.
Be sure to use compressed air to blow out all the fuel and air passages.
Sometimes you can get by with priming the carburetor a few times, and letting it run a few times like that and it will flush the gunk out of the jets,but most of the time you will need to rebuild the carburetor. When you rebuild your carburetor keep in mind that the float has to be level when you turn the carburetor upside down with the bottom of the carburetor still removed.
If the mower/weedeater is over a couple years old, then I also recommend that you buy and install a new carburetor repair kit,because the diaphragm will get hard and that will cause it to be hard to crank.
When you clean your carburetor and remove the jet screws, You will first seat the jet screws and count the number of turns it takes to seat the jets from their original position.
That way when you go to put the jets back in, you know how many turns they were in/out.
Please rate me

Aug 25, 2010 | Toro Garden

1 Answer

I have Briggs and Stratton 3.5 horse power Model 091212-1319-E1 that will not start. I rebuild the carb but it still will not start. If spray hot start it will run for a few seconds

Sounds like you will need to re-clean your carburetor and reset your float level.
When setting your float level be sure to turn the carburetor upside down and make sure the float is level and not tiliting up or down. This will affect the fuel allowed into the carburetor.
Be sure to use compressed air to blow out all the fuel and air passages.
Sometimes you can get by with priming the carburetor a few times, and letting it run a few times like that and it will flush the gunk out of the jets,but most of the time you will need to rebuild the carburetor.
When you clean your carburetor and remove the jet screws, You will first seat the jet screws and count the number of turns it takes to seat the jets from their original position.
That way when you go to put the jets back in, you know how many turns they were in/out.
Please rate me

Aug 22, 2010 | Mtd Garden

1 Answer

How do I re-jet my carbs?

Basic setting for idle adjustments is ~1-1/2 to 2 turns CCW from CW stop. New stock (paper) air filters don't require re-jetting--only K&N foam replacements require one size bigger main jet. Adjust each carburetor idle screw for smoothest idle. Each screw should be about the same adjustment--if one is non-responsive, that carburetor may need internal cleaning. Make sure you have good spark plugs and the ignition points are clean and set to proper clearance. The ignition coils on these old Honda's were typically weak--try to find a modern replacement. The carburetor slide needles should have the 'C' clips in the center groove. Make sure the retainers are down tight. Check the engine valve clearances (about 0.003 " cold) for both valves when the crankshaft is set for TDC when that cylinder is coming up on compression.

Aug 11, 2009 | 1974 Honda CB 200

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