Question about Yamaha Electrical Supplies
We have by passed the oil light new spark boot cleaned carb
If the fuel tank is below the carb, check for a check valve in the fuel line not seating. You can verify by shooting a bit of starting fluid in the breather. If it starts and then hesitates a bit and then runs, it means that the engine speed was adequate to suck fuel back up into the line to the carb.
Posted on Feb 05, 2015
Sound like you've done things in the correct order, tecumseh's are notorious for carb problems if you let as sit in them. Backfiring is timing related (flywheel key) or valve problems. I would take a closer look at the exhaust valve I don't believe it is closing all the way.
Posted on Mar 16, 2009
try to clean out the carb first with auto parts carb cleaner, then you may need to buy a totally new carb for the unit, as this company will NOT sell parts for these carbs due to the carb setting is sealed & has to stay at a set level for voltage output and setting
Posted on Nov 05, 2009
fuel, fire, mechanical. Miss one and she won;t run. Are you sure the gas was good? Not some old can laying around that may have turned or become water contaminated? If it was fresh gas, then take off the air cleaner and spray a little wd-40, or ether, or brake cleaner whatever is flammable into the carb throat. Just a 1 second shot is all it should need. Try and start with that. If it starts and then dies quickly, still a fuel problem. maybe a gasket is damaged, or the jet is clogged. When you said you checked for fire, you acutally took the plug out and had it grounded while spinning the motor and saw spark? If you saw a hot spark then you have eliminated fire. Mechanical not likely if it was running well a short time before. If a valve was damaged, it would still run but not too well. My gut feeling is it is related to fuel.
Posted on May 26, 2010
Testimonial: "thanks for the great help i did try fresh fuel and drained the carb bowl but still same prob its a head scratcher i really thank you for your input."
Its the Oil sensor just pack the oil sensor wires together with a smal screw and bolt and try starting if it starts your problem is the oil sensor they tend to go bad I have run through several myself . To avoid hassles I now have overidden the sensor but I check the oil level everytime I need to use the generator
Posted on Sep 03, 2010
SOURCE: i have no fuel at
Make sure you have flow from the tank to the carburetor. Also, when you cleaned the carburetor, there are several jets that have to be open in order for the fuel to "flow" through the carburetor. The carburetor on this generator has a pilot jet located on the top side of the carburetor and a main metering jet that screws into the very bottom of the carburetor and will be visible when the bowl is removed. After the main jet is removed there is a main nozzle that also has holes in it that have to be open also.
Another problem that is possible is compression. If the engine does not have sufficient compression it will not "pull" the fuel into the combustion chamber on the intake stroke. Hope this helps to get you in the right direction.
Posted on Feb 19, 2011
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