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there is a blockage in the carb. you really need to pull it apart and clean, use carb cleaner which is a water repellant if available. i am presuming petrol is flowing from fuel pipe ok.
Use a hooked/bent piece of wire or similar to get fuel line and filter out of petrol tank filler hole
Remove fuel filter from end of fuel line
Remove air filter housing
Remove choke control/ plate from carburettor
Ease old fuel line from carb. inlet. And clean inlet tube if necessary
Gently but firmly pull old fuel line through hole in base of tank
Fitting new fuel line
the new fuel line has too big a diameter to fit through the hole in the base of the fuel tank.
To get round this I heated the end of the tube with a lit match (but a blow torch or gas ring would do) until it was soft enough to fashion into a point- take great care the plastic obviously gets very hot and could burn ***** flesh. The tapered end you form should be at least 1cm long. Allow to cool
Trim off the end of the tapered point if necessary
My next problem was to get the tapered end through the tiny hole inside the fuel tank. To help with this I took the innards out of a standard biro then put the fuel line through the empty tube with the tapered end projecting from where the ballpoint used to be. Push the tapered end through the hole inside the tank.(a torch was useful here to help see inside the tank)
Pull the fuel line through from below the tank until you have enough to push on to the fuel inlet on the carb.
Cut the tapered end off the tube and push onto the fuel inlet .
Cut the other end of the tube so there is enough length to reach all parts of the fuel tank.
Hi, if it starts again after a litle wile ,then you must have a petrol level inside the carburator tha is to low. in the fuel chamber you find a buoy that controls the amount of petrol coming into the carburator. If this level is to low you just run out of fuel after a fast ride.
Also you must check that your gas tank "breathes" so air can go in as fuel comes out, otherwise it will stop fuel from running due to a vacuum process.
Good luck
The second hole is for the carburator return line(& primer line). Your correct their is nothing to attach it to. The line itself self seals the hole. If you inspect the old line you will see that where the line fits the hole the upper part & lower part were slightly larger in diameter. This enabled the line to seal itself in the hole when installed. If you have to replace the line, purchase a rubber washer and plastic cement and cement the line to the outside, leave about 1/4 of inch of line inside the tank. Try to buy tubing that is slightly larger then the whole which I belive is 1/8"OD. The other line is fuel supply it will have small white ring to attach the tubing to on the fuel tank.
maybe the fuel lines between tank and carburator are blocked, maybe the valve from the tank is on the OFF position so put in on thje ON position if needed ofcourse. maybe the carburator has some blocking inside, due to dirt, factory mistakes,...
just make sure that all the valves and holes where gasoline and air needs to flow through are open to say it this primitively...
The Smaller line goes on the Lower inlet tube on the carborater the other end goes to the gas filter inside the gas tank.
The Larger line goes on the upper outlet tube on the carborater the other end goes to a fitting that holds this tube from coming out on the gas tank .This tube is only for Air, it helps fill the primer bulb when pushed.
I hope this helps.
Mechs correct me if I have made a mistake.
Thaxs Jon
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 bulb.
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
tank.
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!
Sounds like a stuck float. try gently tapping on side of carb near bottom where float assembly is located to see if it frees up if it doesn't you will need to remove and clean your carb and check your float adj.
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