Question about Craftsman Lawn Tractor Operators Manual 917.28742

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Sears troubleshooting jumps in/out of high speed very sharply but interrmittent. I have changed most everything in fuel line including carburator. could it be exhaust system/muffler

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Sounds as if the Carb is "leaning out", I would clean carb with carb cleaner and compressed air while opening / closing throttle use fresh fuel then start engine. If you still have problems, make sure you don't have an air leak between the gaskets-- always use new gaskets on reassembly. Your problem should be solved

Posted on Apr 28, 2014

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Posted on Jan 02, 2017

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Mga bosing ask ko lang po kung ano problem ng suzuki raider 150 ko bigla nalang namamatay in high speed or low speed marami na po kasi ako napalitan sensor carburator spark plug


Hi, Norlan the following applies to carbureted also fuel injected models and the usual suspects are:
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4. Failed main circuit breaker or ignition switch, check for loose connections and continuity.
5. Failed system and or ignition relay, check for continuity.
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8. Throttle cables and or idle speed improperly adjusted hot idle speed should be 950 RPM to 1000 RPM.
9. Air/fuel mixture screw improperly adjusted.
10. Water or dirt in the fuel system, carburetor or filter.
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13. The gas cap is not venting properly or fuel tank venting system blocked.
14. A failed fuel pump, pressure regulator and or fuel injectors.
15. Vacuum line from intake manifold to petcock broken, cracked, or not attached, carburetor vent line plugged.
16. Needle and seat stuck closed in the float bowl.
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I installed a new carburator on a craftsman 25cc weedwacker model 358796600 and it wont't start


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Can't start and gas is not being pulled thru the filter. How do I test to make sure my fuel pump is working?


Pull the spark plug wire to make sure the engine doesn't start. First check the line from the gas tank to the pump. Disconnect the fuel line from the gas tank at the fuel pump. Take off your gas tank fill cap and using light air pressure, blow into the line to see if you get bubbles in the gas tank. Canned air for cleaning computers or compressed air at a very low setting work well for this. Do not use high pressure so you don't burst the line or blow it off a connection that's not easy to get at. If no bubbles come up in the tank, check the line and pickup area of the tank. If the line is clear, reconnect everything. Disconnect the fuel line at the carburator. Holding the end of the fuel line in a small jar, turn the motor over. If the pump is OK it should shoot gas into the jar. If not the pump should be replaced. If it does check your float and needle valve in the carburator bowl.

Mar 11, 2012 | Briggs & Stratton Briggs Stratton Intek V...

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Changed fuel line on my troy-bilt gas trimmer wichone goes where


the fuel thank have 2 lines the one is close to you facing out is the pick up line this line has a fuel filter inside the tank, thats mean go thru the carburator or adapter coupling thru the carburator in the bottom. The second line is the return line this line go thru the prime valve on the bottom and the top line go thru the top line tube in the carburator.

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Can i buy a carb cleaning kit at lowes, h depot or ace. i have a troybilt tb70ss, and am having some of the same problems, but my trimmer wont run at full speed. have to run the choke on mediun, instead of...


you can buy on any auto parts carburator cleaner. And make sure you have a clean filter inside the fuel tank use a little hanguer or any kind of wire for catch the filter be careful came loose easy some times. Cleaned with carburator cleaner and let dry or use air. another think is could be yor carburator is dirty inside in that case you need to remove the cover and remove the 2 screws. Mark your lines top and bottom them removed, now remove carefully the carburator be careful with the gasket remove the 4 Little screws and remove carefully the black Gasket spray carburator cleaner inside the holes and line tubes. Second remove the 1 Big screw on the other side of the carburator be carefull with the gasket spray carburator cleaner and do the step for installed

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1 Answer

Engine turns over, fires, but won't run 1990 f250 w/460 sunds like it is out of fuel. changed plugs, wires, distributer, fuel filter. put fuel in both tanks.


I'm assuming its carburated???? is so, check that the choke is engaging and if possible, try cleaning the idle circuit in the carburator....these things are tricky.....also look for old cracked vaccum lines as the older trucks (mine included) are VERY sensitive to vaccum leaks.

hope this helps, good luck

Jul 08, 2009 | 1990 Ford F250

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