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I did a tune-up on a Stihl KM 56RC. Three hoses connected to the carb. Two I connected correctly. The third I could not find where it came from. Now the Trimmer runs at h high all the time.

Tube showed only two hoses that run into the fie tank. Mine there was a long one. A short one that went into the tank and had the filter connected. and the third on top of the carb. I left this one unconnected.

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6 Suggested Answers

6ya6ya

6ya staff

  • 2 Answers

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Posted on Jan 02, 2017

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Vee-Max

  • 4 Answers

SOURCE: stihl carb

Try this link. It has the carby settings on page 26 & 27 of the Stihl FS 45 manual.
http://www.mccoyslawn.com/parts-manuals/Stihl/FS45_46_Manual.pdf

Posted on Jul 19, 2009

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Anonymous

  • 173 Answers

SOURCE: Stihl weedeater starts but won't run at high speed

This sounds like a timing problem.
It is too far retarded, and needs advancing a couple of thou.
There you go:)

Posted on Jul 25, 2009

DALE BURNS

  • 71 Answers

SOURCE: stihl line trimmer starts but won't stay running

check to make sure your kill switch is not shorting and you have the right gap from the coil to the flywheel also if the flywheel sheer pin is damaged in the least this will cause a multitude of problems... it is the timing pin and must be in good shape not damaged or sheered ..any way reply to mrdmburns@cableone.net and i will try to help you through this.... DALE good luck and will wait for reply..

Posted on Aug 29, 2009

rycgl

Roy Cagle

  • 1545 Answers

SOURCE: have a poulan pro ppb350 31ccweed eater runs short

This is an ongoing issue for users, and rightfully so. Small diameter line out of fuel tank (has filter in-tank on end) connects to the side of the carburetor that has the fuel pump....that is the cover without the hole in it. Other larger diameter fuel line out of tank connects to the longer nipple on the external purge/primer bulb. The bulb "pulls" fresh fuel from the fuel tank to the carb and then out of the carb to itself, where it then pushes any air/old fuel back into the fuel tank. The remaining larger diameter fuel line in this setup goes from the metering chamber (has cover with writing on it and a vent-hole) side of the carburetor to the smaller nipple on the purge/primer bulb. Years ago on 2-stroke trimmers, primers were not even used,...you choked the carb with a slide lever and gravity let fuel enter the carb from above...a few pulls, a "pop"...slide it off of choke and away you went.
If the purge/primer bulb is on top of the carb...small line from carb body to small hole in tank with filter. Larger diameter line goes from the bulb on the fuel pump side of the carb to the larger hole in the fuel tank where the line is held in place with a nylon nipple connector that keeps the line from pulling out of the fuel tank.

Posted on Sep 11, 2010

rycgl

Roy Cagle

  • 1545 Answers

SOURCE: Hi, I have a ryobi BC30 brush cutter my fuel lines

The small diameter line out of fuel tank (has filter in-tank on end) connects directly to the side of the carburetor that has the fuel pump....that is the cover without the hole in it. Other larger diameter fuel line out of tank connects to the longer nipple on the external purge/primer bulb. The bulb "pulls" fresh fuel from the fuel tank to the carb and then out of the carb to itself, where it then "pushes" any air/old fuel back into the fuel tank. The remaining larger diameter fuel line in this setup goes from the metering chamber (has cover with writing on it and a vent-hole) side of the carburetor to the smaller nipple on the purge/primer bulb. Again, on the primer bulb, the longer nipple has a line going directly from it to the tank. This is the return line. The shorter nipple on the bub has a line from it going to the metering chamber side of the carb. If the purge/primer bulb is on top of the carb...small line from carb body to small hole in tank with filter. Larger diameter line goes from the bulb on the fuel pump side of the carb to the larger hole in the fuel tank where sometimes the line is held in place with a nylon nipple connector that keeps the line from pulling out of the tank. Otherwise, the line should enter the tank for about 1/2" or so

Posted on Nov 09, 2010

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