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  #1  
Old 09-13-2007, 03:33 PM
appalachianarbo appalachianarbo is offline
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Location: Asheville, NC
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BR340 won't idle or accelerate

I have a Stihl BR340 blower. It has been sitting for a few months, and wouldn't start last week. I took apart the carb, sprayed and blew out all ports, and reassembled. It ran fine. It then developed a gas leak from the carb from a gasket, so today I replaced the gaskets. Now, when I start it, the engine runs, but will not accelerate without dying. To keep it running, I have to put it on full choke for a quick second, then switch it back. It will then rev up for a few seconds, then slow down. If I don't keep switching the choke to full and back, it will die. I can't accelerate even after I switch it to full choke and back. Adjusting the idle speed and H & L screws didn't seem to make a difference. Thanks
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  #2  
Old 09-13-2007, 04:35 PM
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MuleCutter MuleCutter is offline
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you need a new carb. if it's been sitting for a few months the gas gummed up and regardless if you spray carb cleaner it wont work to the fullest potential. you might want to change your fuel filter also.
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Old 09-13-2007, 08:04 PM
appalachianarbo appalachianarbo is offline
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It ran fine before I changes the gaskets, though, so the carb's not completely bad. I think I screwed something up on the reassembly. Any guesses?
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Old 09-13-2007, 10:00 PM
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ed2hess ed2hess is offline
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I guess you installed the full kit...the needle valve and its actuator? May have got gaskets out of sequence....cant help fix....
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  #5  
Old 09-13-2007, 10:04 PM
khouse khouse is offline
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What gasket did you replace? Maybe you installed it wrong? I'll bet you have the gasket on the wrong side of the diaphram.
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  #6  
Old 09-14-2007, 07:54 AM
appalachianarbo appalachianarbo is offline
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Quote:
I'll bet you have the gasket on the wrong side of the diaphram.
Possibly. Anyone have the exploded diagram? I guess it will just be trial and error.

I replaced all the gaskets, but not the needle. Maybe I knocked that out of whack when I reassembled. I'll replace that, too and see what happens.
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  #7  
Old 09-15-2007, 08:41 PM
topsites topsites is offline
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yeh teh solution is prolly in them 2 carb adjustments screws, fun fun.
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