The engine on my generator starts up, then quits after 30 sec. put in fresh gas, , checked the float bowl and sprayed carb cleaner where I could get at it. still no change. oil level is good.

Gap the plug at .030 What is most likely the main problem is whatever gas sat in the carb. Even with fresh gas there will be some old gas still in the float bowl. You may be able to drain the bowl and be OK but I have a feeling that the carb will need to come off and be disassembled and cleaned properly. You can try spraying carb cleaner (I dislike starting fluid as it is too volatile and carb cleaner does just as well in this instance) into the carb/intake. Remove the air filter, open the choke, and spray the carb cleaner in through that way if possible. You can actually keep an engine running by spraying with short bursts. Even by just spraying once you should be able to get the engine to start. If it does start but then will not stay running without spraying more into the engine then it is a carb problem.

hello sir, mower will not start or run, does it have good spark,good compression,or only runs on full choke,engine surges up and down, are you getting fuel to the engine if not try this, your carb. is clogged up here is what you can do for a simple repair and other things if you want to, you will need a new air filter,spark plug, oil, if you want to a new blade also ,sears has a mini tune up kit that you can buy. now for the carb, empty fuel tank, place mower on side to where carb is facing up place a rag under carb to catch excess fuel,remove the bowl nut and bowl careful of the gaskets,now spray carb cleaner in the small port holes in the carb steam in the middle of the carb until clean,now spray the bowl nut holes until clean there are three,after cleaning put bowl on the same way you removed it with dip towards front of float,put bowl nut in, now while you have mower on side drain the oil remove filler cap to drain,put pan under spout,mower holds 21 o/z of 30 wt oil,you can remove blade to get sharpened or put new one on,to remove blade put a pair of vice grips on the body where the blade can stop and not turn it is usually a 9/16 or 1/2 socket, put blade on add oil,add new and fresh gas,you should be good to go,hope this helps,what i am telling you here is what i would do if it was here in the shop,any comments welcome,thank you.~~

Sound`s like your not gettimg fuel. 1 take fuel line loose from carb. (have a bolt handy to plug gas line unless the gas is old then drain gas into a suitable container for disposal.)2nd take fuel bowl off of carb. should be 1 bolt thru the bottom holding the bowl on. Be carefull not to tear gaskett. Float assy. should drop down,but should not fall out. 3rd take aresole can of carb. cleaner with the straw attached and clean the float bowl, the float area. watch for over spray onto painted area,wear glasses to protect eyes. wipe off overspray as soon as possible.4th clean jet,place straw i,nto small metal tube that looks like a part of a metal inkpin located in the center of the float comming up from the bottom. 5th,open the choke/throttel plate inside the large opening in the carb and spray that area if you can see any metal trubes in that area place the straw into that and spray.Re assemble in reverse ordear that you took it apart. Be sure to pay attention to the gaskett or you will have leak`s. rre fill with fresh gas should start and run. If you do not use equipment every week then you may want to put a gas additive into the gas tank to help prevent this from reacureing. I use a product called Sea Foam Good Luck

Hi I am Kelly,
I read that you did a carb cleaning. Remove the fuel float bowl again. In the area of the float bowl nut threads is the main fuel jet orifice and fuel tube. Break off a toothpick and use the BLUNT end up inside the threaded area in a twisting manner to wipe any debis from the main fuel orifice. Also if you remove the air filter and look in the throat of the carb. There is a brass tube at the 6 o'clock position. Spray that with carb cleaner and watch for carb cleaner to come out of the main fuel orifice in the threaded area. Once you have done this youshould check fuel flow. Get a spary paint can lid and place it under the carb / float. Turn on the fuel and watch fuel flow. It should fill the spray paint can lid in about 10 seconds. If you do not have good fuel flow then you will need to inspect the main fuel supply at the carb connection. It should really be a rapid rate from the fuel hose coming form the tank. Low flow here you must inspect the tank exit port, fuel shut off and any in line filters. Good flow here but low flow under the float... you need to spray carb cleaner UP beside the float needle with the mainfuel hose removed to get any debris out of the needle and seat area. Then spray from the main fuel line connection DOWN through the float needle and seat. Reconnect the main fuel ine and test flow. Once you have good fuel flow re-install the float bowl and attempt a start.

If you have the same result... read this:
IMPORTANT: The engine is equipped with a low oil level sensor. Make sure the oil level is serviced fully. If there is a low oil level condition (or bad sensor) it will shut off the ignition.
It is quite possible that your oil level is high enough to get an engine start but as soon as oil is circulated in the engine the sensor is activated. If you suspect a low oil level sensor problem disconnect ONE wire from the sensor and test unit again.

After doing ALL of the above you still have the problem just respond here and I will continue to help you.

Kelly

Hi and welcome to FixYa, I am Kelly

If the generator has sat for some time the fuel in the float bowl will turn into a varnish like substance (shellac). The residual fuel in the carb will have to be removed. You do this by removing the fuel solenoid (or bowl nut) which ever one youhave that secures the float bowl to the carb. Then take a screw driver and remove the main fuel orifice and remove the debris from the main fuel orifice. Clean the orifice with carb cleaner. DO NOT push anything into the hole! Also spray the brass tube that the main fuel jet screws into with carb cleaner. You should see carb cleaner being sprayed into the throat of the carb.

While the fuel float bowl is removed get a spray can lid and hold it under the carb float. Turn on the fuel selector and the fuel should completely fill the spray can lid in 8 - 10 seconds. If you do not have this amount of fuel flow you need to remove the main fuel line from the carb and re-check fuel flow. If the flow is good here then use carb cleaner in the float needle area to force any debris back out the fuel manufold connection that is now open because you removed the fuel line. If you still do not have fuel flow then check for debris in the fuel tank exit port, the fuel filter, the sediment bowl under the fuel shut off assembly.
Once again with the spray can lid under the float you should have fuel flow anytime the fuel selector is on and the float level is down. It should shut off fuel just as it reaches level. Any other result and the float and float needle will have to be removed, cleaned and inspected for debris.

Make sure to re-install the main fuel orifice in the treaded area that secures the float bowl in place and.re-connect the main fuel line to the fuel manifold / carb fuel inlet connection

If the engine has a fuel solenoid hook it up and and see of it is working as you turn the key / engine switch on and off before you reinstall the float bowl. You make have to hold the case of the solenoid against the engine to make a ground AWAY from any residual fuel for testing. I.e. don't burn up your generator.
Re-install the fuel float bowl and test the engine. It should now work just fine.
The above steps are successful most of the time on generatosr that have sat idle for an extended period. I have been working on generators large and small for over 40 years.

Thanks for choosing FixYa,
Kelly

Spraying carb cleaner into the carb doesn't clear the gummed gas that is clogging the supply of gas to the carb. Remove all of the gas. Put a little fresh gas and carb cleaner (about 50/50) in the tank. Try to get that to run (spray more carb cleaner or instant start into the carb to help it start - you might have to do that a couple of times). If it does start, let it run out of gas then refill the tank. If that doesn't work remove the bowl from the carb and clean the float valve and the mixture valve.
Good luck, Al K

Old gas has probably gummed up the works. You have to store these with an empty tank to avoid this in the future. Using a fuel stabilizer helps too. To fix it, remove all of the old gas. Make sure the fuel cutoff valve is open (it only turns 1/4 turn). If it has a fuel filter replace it. Put in just a little fresh gas in the tank with a bit of carb cleaner. If it still won't run, remove the carburetor bowl and you will see a donut shaped float that operates a valve. Using carb cleaner, clean that valve, and clean the needle valve in the middle of the bowl. Good luck.

the problems is in the carburetor, common problems when unit does not run often and rust get get build up. get some automotive carburetor cleaners and spray it heavy in the carb, don't worried about flooding it or damaging anything, it will dry out faster than gas. (use little gas if you need to) try to start it up and get it running with the carb cover off and continue to spray carb cleaner in the carb while the engine is running, do this couple of time and hope that would clear it out. if that don't work you will need to take it apart and clean it. you have small tiny object obstructing the carb flow. the unit doesn't have a fuel pump, it run on gravity feed, the carb are easily obstructed. hope that help a bit

the engine is not getting enough gas. when you hold down the primer you are bypassing this problem. to fix this simply adjust the carb's fuel screw, located on the side of carb, a little at a time until runs smoothly.

I am not familiar with your bike but if it has a standard carburetor then remove the water trap bowl at the bottom of the petcock, (gas valve). Is there any water or trash in the bowl? Drain a cup of gas from the tank. Is there any water or trash in the cup? Dump it, clean it and re-mount it, ( not all bikes have a water trap bowl ).
Drain the carburetor. There may be a screw on the lower side of the carb float bowl. Remove the screw then replace it after the fuel drains. Install a new stock NGK spark plug.

Remove the carburetor from the engine. Remove the float bowl and clean the entire carb with a spray carb cleaner from the auto parts store. Wear protective goggles to avoid getting spray in your eyes. Spray into all the little airways and fittings in the carb. Remove the idle screw and the air screw on the outside throat of the carb and spray into the screw holes as well.
< < READ CLOSELY > >
Be sure to put these two screws back in the same hole they came out of. IMPORTANT > do not tighten these two screws down. Only screw these in until they LIGHTLY seat. Now turn each screw one and one half turns outward. Put the rest of the carb back together, clean the air filter and install the carb. Let the float bowl fill then start the engine.

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