Yard Machines 155 Torque Briggs  Stratton Riding Lawn Mower (NonCARB Compliant) 13AM772F000 Logo

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dean pedersen Posted on Jun 08, 2012
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Only runs with chock on

Must have chock half on to stay running

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  • Master 6,468 Answers
  • Posted on Jun 09, 2012
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Sounds like a dirty jet inside the carb

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Just put a new carburetor on my sears blower an in only run on half chock

The fuel air ratio is incorrect. If it has an adjustment screw on the carburetor, turn it slightly right or left, don't worry because you will "hear" the engine differentiate..
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Put a new carbuerator on run on half chock

If it runs right but on half choke then your fuel to air ratio is off... is there an air mixture screw on the carburetor?
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I have a presser washer Coleman power mate motor. The intake value was stuck. I pulled the head and cleaned the old gas off that had stuck the value open. It runs now but only on half chock. It runs great...

Sounds like the carb needs to be adjusted by someone that knows how to repair engines. Note: if the carb is set too lean, it will damage the engine.
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Will start with chock on but wont stay running with it off

the idle jet or the float valve is blocked
you need to strip the carb and unscrew the jets and clean them
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Craftsman weed wacker will start and run

Are you sure you have the right fuel mixture? Many of these require 2 Cycle oil to be added to the gas. If fuel is right, you may have a vacuum leak at the carb (or crack in base where it mounts to the engine). My weedwacker needed to be run on half choke for about 10 min before it got hot enough to run with choke off.
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My MAC 3227 trimmer will start an only run for a short time (less than a minute). It needs for the chock to be in the half chock position to start. If I move the chock to non-chock it stops. If I...

remove the carburator.. It's plugged.
disassemble and soak the body in fresh gasoline for about 10 mins.
Blow out all the ports with small engine carb cleaner and reassemble.
Drain the gas tank , clean it and refill with fresh gas mixture
It doesn't take much to clog those little carbs
May 23, 2011 • Garden
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1answer

What does the symbols mean on the controls

the on off switch has a o and a I The o is off and the other is on


as for the other three you have a from right to left on the main body full chock the half chock the run prime it 7 times on the primer ball with the full choke on the pull crank cable 3 times then move choke to half choke then pull until it starts if after 10 pulls it doest start out back to full choke and sart again if and when it startes let it rund for about 15 secs on half choke then move to run If after all that and you have done it a few times and it still doesnt start get rid of it as it is a totally rubbish tool I know i had one for 6 m onths used iit 3 times then i bought a stihl.
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Engine starts runs rough,then quits before you can put a load on generator,starts with half chock,will not run without half chock,and even half choke runs rough,and then quits

this is down to fule shortage strip card and all fule pipes clean the tank on off tap and any filters fitted also check all the jets inside the carberetor blow out with comprest air,,,dont go pokeing wire into any jets!! that could wreck the jet, but its all down to fule shortage
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My Ryobi trimmer quits running after I turn choke off and pull trigger to speed it up

run it with chock on half way it will start running better after a wile
Sep 20, 2009 • Garden
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Mower will start but not stay running

the mower seems to be running fine now. after i read a solution to another readers question on a different problem, thought i'd give it a try. i took off the bowl. it was filthy, so i cleaned it out, checked the float, and put it back no. then reconnected the fuel line, and cranked her up. problem fixed so far. thanks fixit guys.
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