Question about Garden
Starts fine, runs,fine for about 5 min will not restart for about 20 to 30 min changed fuel filter changed ignition plug
Check the fuel filler cap, there is a breather in the top if this is blocked it will create a vacume in the tank, try leaving the cap loose and see if the problem has gone, if not then this is an ignition unit issue, replace the ignition unit.
Posted on Jul 14, 2013
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Posted on Jan 02, 2017
Fuel is induced into the engine via the diaphram to the carburator. If the diaphram is weak or has a hole in it, it will run out of gas just like you discribed..
Posted on Jan 18, 2009
two things could be happening.......first is vapor lock......make sure you breather tube is clear and working........next is ....it could have a bad ignition coil on it.....after the coil gets hot the spark can become irratic or just not work any more.....
Posted on Feb 23, 2009
SOURCE: saw will not stay running
It sounds like it is not getting enough fuel to keep it running. There may be a clogged screen in the carb or dirt somewhere in the carb. Another thing you can check is the adjustment on the carb.
Posted on Jun 19, 2009
Hi, I spent most the day yesterday fighting the same problem on my husqvarna 45. My symptoms were that it ran for 2 seconds then died. The spark plug would come out wet, and if I kept cranking the starter, I could see gas coming out the exhaust. Obviously flooding.
It turned out to be the inlet needle valve being stuck open. I replaced the needle valve, still no luck. This is the valve that regulates the gas coming into the carb, normally pushed by a float. Chainsaws use a rubber diaphragm instead of a float because they need to run sideways.
I had a closer look at the cavity the valve fits into (two pairs of reading glasses!) and saw some greenish hard stuff that my carb cleaner spray would not remove. So I took an electrical tye wrap that's width matched the diameter, and rotated it till the crud was gone. A wooden bamboo skewer or toothpick might also work, don't use metal.
Reassembeled, and runs fine. Your carb may be a Zama which has a good technical guide online: TechGuide_2007.pdf. Walbro diagrams might also be online. Good luck.
Posted on Aug 29, 2009
Testimonial: "Thanks - I found something similar, slime had worked its way into the carb. All I had to do was take the top off the carb and spray it out."
Check for spark after it quits. If none, the ignition module may be dying when hot. If ok, check the muffler for plugging. Use compressed air to remove sawdust from cylinder and head area. If everything looks good, note whether the spark plug is getting wet with fuel after trying to restart the saw. If dry, check the fuel lines for cracking or other deterioration. Make sure the fuel tank vent is clear of debris. (Loosen the fuel cap for a moment, then see if it will start.) Hopefully, one of these suggestions will hit on the problem!
Posted on Feb 20, 2010
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