Karcher 3100, I GAS IN THE CARBURATOR BUT IT WILL CUT OFF UNTIL ALL THE GAS IS USED OUT OF CARBURATOR THEN IT CUT OFF, i PUT NEW SPARKS PLUG IN AND CLEAN CARBURATOR, I DON'T KNOW WHERE TO GO FROM HERE, ALSO I NEED TO KNOW WHERE IS THE FUEL FILTER
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Re: where is fuel filTER
Hi: There is only one line (tube) that goes from the gas tank to the carb. If there is a fuel filter it will be on that line. To check if it is plugged just pull the line off where it attaches to the carb. If you spill gas, that is not the problem. Replace the line and be sure to clean up the gas. Sounds to me like a carburetor problem, though.
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-Check the fuel filter inside the carburator and the cut off fuel plunger inside the carburator. It might be stuck in or lose from it floating arm. That's why it doesn't let fuel flow to the caburator recevoir.
Before taking the saw completly apart, I would check the fuel filter which is inside the gas tank. There is a black hose with a filter on the end of it which lays on the bottom of the tank. the easiest way to get the hose out is to empty the gas out into a safe container. Flip the saw so that it is upside down and grap it with some needle nose pliers. Once the filter is out pull up on the aluminum coupling, this will release the filter. If you do not have a new filter on hand just simply use some carburator cleaner to spray the dirt and slim. There is a hole at the bottom of the filter that will most likely be pluged with slime. Spray some cleaner in the whole and use a tiny flat head screwdriver to clean out the whole. When the whole is free from slime, spray the filter down with cleaner again. This should do it. put the filter back on the end of the hose and fill with gas. Should work perfectly. Keep in mind this is only a temp fix. You should get a replacement filter asap seeming replacing a carburator will be costly.... I hope this helps!
On a different thread: Oct 22, 2009 – your comment Got it started by cleaning carburetor but it smokes quite a bit played with 2 screws on side going in all the way and backing out one and half turn still smokes Oct 22, 2009 – my reply Tune it until it idles and cuts properly. 1.5 CCW is a good starting point. Tune for performance. 1 turn CCW is as lean as I’d go. Clean air filter, fresh mix, fully warmed up, bar mounted and properly tensioned. HTH Lou
You can cut the line, push the fuel filter and fuel line attached to it out where you fill it with gas. When you are ready to put new line in, cut the fuel line at an angle so you can push it in the hole. Keep pushing in until it comes out the fuel tank fill hole. Attach your new fuel filter to the line and pull it back until the fuel filter lays in the bottom of the tank. Then cut the line to length and put it on the carburetor. Take the other piece hook on the carburetor and put it back in the tank.
If you have a Honda engine there's a fuel screen filter under the tank .
To get to it you have to remove the tank and turn the tank over so you can acess the filter. There's only 3 bolts holding the tank .
Check also the shut off gas valve by the choke .
Hope this help
HOW TO CHANGE FUEL LINE ON McCULL0UGH 2014 CHAIN SAWS.
I have successfully changed the input fuel line by purchasing Tygon
tubing from a local lawn equipment dealer. I did not see the box he cut
this from, but the tubing I bought measures 0.190" outside diameter. I
gave him a piece of the old tubing and he matched it up. A 18 inch
piece cost me $1.19.
The routing of the fuel line involves three pieces, one piece from the
fuel priming bulb to the carburator is 3 inches long, a piece from the
fuel priming bulb to the gas tank is about 4 inches long and the piece
from the fuel tank is about 7 inches long. The priming bulb sucks air
and fuel from the carburator and dumps it back into the gas tank.
Therefore, when you press this repeatedly, gasoline will eventually
appear in the bulb when the gas line to the carburator is full of fuel.
The bulb may not completely fill, there will always be a little air in
The fuel line in has a filter on the end within the fuel tank. If you
find this has broken off, as I did, you have to turn the tank upside
down and shake the filter and any pieces of broken fuel line out of the
Replacing the fuel lines within the carburator compartment is easy if
you remove the carburator first. To work on this you must remove the
two screws holding the carburator to the engine. You may need to use a
small screw Torx driver, although on my chainsaw, there was also a long
straight slot on the head. The line from the priming pump to the
carburator goes to the left hand line on the carburetor (as viewing
from the top with the blade extending away from you. The input line
will go onto the right line on the carburator.
The two lines into the fuel tank are located in the middle of the tank
left to right and one about 1/2" above the other. The upper hole is for
the fuel intake line. The fuel line passes through this hole and a
second hole visible within the tank fill hole.
This was the trickiest hose to replace. How I did it was to use a piece
of #12 copper electrical wire stripped out of its insulation. This was
fed through the 7-inch Tygon tubing piece until it emerged from the far
end. I also found it necessary to put a bull nose end on the Tygon
tubing in order to get it to feed into the tank hole visible from the
tank fill hole. Why? I don't know, but after 20 minutes of trying to
feed the hose (both naked and with the electrical wire inside) into
that second hole, I gave it a bull nose on the tubing by careful
cutting with sharp scissors and using a sanding block. Perhaps
McCullough has a special tool to do this, but a call to their 800
number could not get a knowlegible answer from the parts person.
After the Tygon tubing shows up in the tank fill hole, I pulled it
further with needle nose pliers and was able to pull the copper wire
back out of the tubing. I then cut the bull nose lead I put on the
Tygon tube and installed the filter onto it. I found that a little oil
on the nozzle and the carburator lines makes the tubing easier to slip
on. The stuff the filter and Tygon tubing back into the tank fill hole
and towards the front end of the tank so that it drops into the bottom
portion of the tank. After attaching the intake line to the carburator,
use the needle nose pliers to pull excess line into the tank.
Reassemble the carburator to the engine and you'll be good for another 10 years of happy chainsawing!