Question about Husqvarna 350 18 Inch Gas Chainsaw 52CC Fully Assembled Brand New 18"
Starts, then sputter and stop. Floods when trying to start afterwards. Good spark.
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Posted on Jan 02, 2017
If it idles it is not flooding out as it it most vulnerable to flooding at idle if the stalling is happening as you try to throttle it up it is likely starved for fuel. Start by changing the in tank fuel filter, and the spark plug. good chance that will solve your problem. If it does not Turn the high idle screw out in 1/8 turn increments try running the saw after each adjustment. Keep track of the amount that you turn the screw. you might have to put it back to its original position. Some times adjustment screws will vi berate out of adjustment and other times crud will cause fuel restriction opening the screw allows for a larger port for any restrictions to pass through. After you use the saw for a short time turn screw back in if it starts to stall at idle or you notice increased smoke.
Posted on Jan 06, 2009
SOURCE: spear and jackson chainsaw. runs
OK - let's work through this. If you need choke all the time then the mixture is too weak when the choke is off. Putting the choke on literally chokes off the air supply to the engine by lowering a small shutter across the entrance to the carburettor. That means either there is too much air getting to the engine (don't see how!!) or too little fuel. So, how do we get too little fuel? You could check for this as follows;
- before we do anything tricky let's check the obvious things - is there a fresh fuel mix in the tank? Petrol does go off, especially if there is 2 -stroke oil added to it. If it's over a month old from the pump mix up a fresh batch. Is the idle speed set too low so the engine stalls when the choke is knocked off? You can see this screw to one side of the carburettor (you need to remove the top lid in front of the handle on the chain saw, and then remove the air filter to see it). Turn the screw half a turn clockwise to speed the engine up. Be warned - if the engine starts it will run faster than normal and that means the chain may start to spin around. Also - check that the chain brake is off (i.e. the safety lever is pulled backwards, and that the chain is free to move BEFORE you attempt to start)
- is the fuel filter blocked? To get to this, make a wire hook (e.g. thick fuse wire) and gently hook out the fuel filter that's sitting at the bottom of the fuel tank, and take a look at it (be gentle - you can damage the gauze if you are clumsy). Does the gauze look clear? I.e. if you dip it into petrol it will freely run into the filter and of course drain out when you lift it? If not, replace it.
- next stop - are the jets in the carburettor set right? I don't have a service manual for this (and I know the manual says unhelpfully "return for service") but basically you will have seen two holes on the side of the chain saw (below the handle) two small 0.8cm holes; one marked 'L' (for low speed) and the other 'H' (for high). Put a fine flat screwdriver down the L hole and feel for the slot of the low speed jet. Once engaged turn it out half a turn and this will enrich the mixture - if this seems to help and you can start the engine then adjust the L jet in or out until the engine is idling comfortably. If it idles too quickly then you can also turn down the idle screw (see previous paragraph).
- no luck still? Well, it could be fuel pump or a blocked jet in the carburettor but this really is a 'return to the service centre' task!
Posted on Jan 12, 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
Husqvarna says the initial carburetor needle valve settings are from lightly seated 1 turn CCW for both H & L.
Your Operator's Manual can be downloaded here:
Once flooded Huskys are very hard to start. This works well on my 359.
Posted on Oct 03, 2009
The problem centers around the carburetor. The question lies in the condition and operation of the carb initially.
It appears you may need to double check your assembly of diaphragms and gaskets. check for loose welch plugs, adjustment needles in the wrong holes, inlet needle set too high.
*note: metering side diaphragm goes on top of the gasket, fuel pump diahragm has the gasket on top of it.
Posted on Nov 11, 2009
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