Question about Craftsman 675 Torque 190cc 21" Briggs Stratton RearBag Push Lawn Mower (CA) ()

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Will not prime with primer bulb , can squirt gas in carb and get running then while running you push the primer button it chokes down the engine .

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  • Contributor
  • 8 Answers

Does it stay running after you squirt fuel in the carb opening? If yes, then there may be a pin hole leak in the hose going from the fuel tank to the primer bulb and it is adding air to your carb.
Thanks

Posted on May 02, 2015

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Posted on Jan 02, 2017

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steve_lima
  • 181 Answers

SOURCE: I have a Brigs&Straton 6.5 Quantum lawnmower will not stay running. I can keep it running by restricting the amount of air entering the carb with my finger (choking it) The mower will start if it

the problem is in your carb.,at the bottem of the carb. there is a bolt that threads in to the carb.pinch off the fuel line so that no fuel comes out after the fuel bowl is off the mower.now look into the bolt that you took off.there should be a hole oppisit the head of the bolt.there are also two holes that go through the sides.these holes are the fuel intake to the carb,the hole in the center is the fuel nozzle.most likely you have dirt blocking this hole and not letting the motor get enough fuel to run.thake some carb cleaner and spray it in the hole.take an air hose then blow the nozzle out.while you have the screw out take the bowl off and check to see if there is any water or dirt in the bowl.after cleaning.reinstall the bowl and start mower again.should be running ok now.if not let me know and i'll guide you through another fix.let me know if this helped or not................

Posted on Jun 02, 2009

#1 Taper
  • 1040 Answers

SOURCE: I can prime with bulb and runs a couple seconds then shuts off

You need to clean the carburetor. Or, you need a new carb. kit. If you need tips on how to best do this, just let me know.

Jim

Posted on Jun 04, 2009

  • 5 Answers

SOURCE: craftsman eager-1 3.75 mower will not stay running

Most of the starts but dies problems are caused by dirt/water/debris in the carburetor float bowl.

You can try draining the gas out of the carburetor float bowl by removing the float bowl nut located on the bottom of the carburetor.
Make sure the hole in the float bowl nut are clean. If the problem persists after draining the float bowl nut you will have to remove, dis-assemble and clean the carb with compressed air and carb cleaner.

Posted on Aug 20, 2009

SOURCE: Somebody gave me a Craftsman lawnmower with a

under the carb is a metal bowl. This bowl houses the carbs float attached to a needle valve. This valve is probably stuck open due to corrosion or dirt blocking the opening. You can remove the bowl with a half inch wrench and lower the bowl from the carb. Let some gas flow out of the needle valve and work the float up and down to help clear out the obstruction.

Push up on the float and see if the fuel flow stops. If it does you can put the bowl back on and see if it stops flowing out the primer bulb.

If it is still flooding you probably need to replace the float, and needle and needle seat. These are pretty inexpensive you can order them online *(ebay might even have them!).

You might want to clean the main jet too. You should get this carbs diagram to show you where the main is located.

Posted on Jul 09, 2010

Testimonial: "Leaking stopped but mower still would not start. Soaked carb in Gunk & the bowl gasket stretched, have ordered an overhaul kit. Research showed the mower model as 917.377240 w/ motor 128602 0304 E1 w/ Walbro 214661 carb. Kit # 692703 or 792383 Thx"

hunter19_46m
  • 7482 Answers

SOURCE: trouble with carburetor,runs after priming then

Sounds like you will need to clean your carburetor.
Be sure to use compressed air to blow out all the fuel and air passages.
After cleaning and before you reassemble the carb, be sure to "set" your float level, turn the carb upside down and make sure the float is LEVEL and not tilting up or down
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.
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

Posted on Aug 23, 2010

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Mercury 40 2011. Boat starts great but will turn off after 10 to 18 minutes of use. I then have to pump primer bulb a lot of times. I have replaced with new primer bulb but with continue to shut down.


Just some pondering........
Runs
good when cold but when warms up it dies.
Have you checked for spark at the plugs right after it died?
Have you tried priming it (squirt gas into carb)
What happens if you pull the choke on the moment that it starts to die?
Wild guess? Vacuum leak at carb gasket. If bolts are not snug, when the engine warms up it might expand enough to let air in past the gasket.
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The bulb usually doesn't feel that way, you're thinking of a small 2-cycle machine where the bulb will fill up with fuel and offer resistance when pushed. A primer on a snowblower is merely to get fuel flowing to the carb from the tank, whereas the bulb on 2-cycle items actually purges air from the fuel circuit. If you keep pressing the primer you should see fuel drip from the carb inlet. Btw, if you see where an air filter might be on other motors, a little metal cup looking thing, try removing the bolts and flipping it over so the fuel drips out easier and snow doesn't have the chance to fall into it if it were facing up. Once you see fuel dripping out, provided you ran it dry last season when you put the blower away and the carb isn't gummed up with varnish, it should start on full choke. Give it about 3-5 seconds and move it to half choke. Once it seems to want to run on its own, open the choke completely and you should be warmed up and ready to go. Also always remember to let engines idle a bit to cool down if you've been running them at high rpms.

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I have a CS4518 Earthquake chainsaw that will crank fine when you pump a little gas to the carb, but stops as soon as it burns the gas. I have replaced all fuel lines, primer bulb , cleaned the carb and...


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1 Answer

Hard to start


Change the spark plug. Also, The carburators vibrate loose sometimes. Check tightness of the two bolts or screws that secure the carb to the motor. Also check that your primer bulb is really pumping gas to the carb. Pump 6 to 10 times until it is full. Pumping extra is not a problem, it will just overflow back to the fuel tank. Check that when you pull out the choke, it really moves the choke plate and it is not stuck. Choke Should be all the way out right after you prime it. Then pull the rope twice or until you get a sputter. close the choke half way and pull again until it starts (you may need to push prime bulb one time more after 3 or 4 pulls here). Slowly push in the choke as it warms up.

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1 Answer

I have gas that squirts out of the primer button. I have to keep restarting it cuz it dies what part would that be I might need to replace


hi there jojocc1971

with a small screw driver push the 2 tags down on the retainer that holds the primer button in on the carb body - replace the primer bulb ( its a wet type , no pre-punched hole in bulb )
fit new bulb to retainer and the fit retainder assy to carb body and make sure the tags snap into the holes on the carb body ( you will have to use 2 small screw drivers ) but dont put a hole in new bulb

cheers hope it helps

pauly46

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I have a push mower with a briggs and stratton 3.5 hp classic. The old primer bulb developed a crack in it so gas would leak out when priming but it would start and run until no more gas would go into carb...


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You cannot flood the engine by pushing the primer bulb too much, unless the hoses are hooked up backwards. The primer does not push gas to the carb, it sucks gas through the carb and returns it to the tank. Top barb on primer is the hose coming from the return side of the carb and the bottom fitting is the hose going to the return fitting on the tank. Look inside tank, it is the one without the filter on it, just a flange with a hole in the center.

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Priming the engine(put some gas in the sparkplug hole)..If.Start the engine.If only the gas from the cilinder is burned change the lines prom primer bulb.

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