Question about Husqvarna , No.455 Rancher, 20" Gas - Powered Chainsaw

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Finally got the saw to start but it won't keep running. Fuel OK. Chain oil OK. Even when I pump the throttle can't keep it going

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Check for plugged fuel filter and rotted or damaged fuel lines. Check the air cleaner and muffler for plugging. Unless the machine has been in storage for some time or had considerable use, it should not be necessary to clean the carburetor. Hope this helps!

Posted on Oct 16, 2010

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What are the steps to getting the chain saw started and idling? What are next steps to cut tree limbs and oil the chain? This chain saw was given to me without a manual.


If you are a complete novice you should seek some training before attempting to use the machine, as you do not say what model this is we will go through basic starting procedures, fill the fuel tank with fresh fuel mixed with two stroke oil at 25-1, fill the chain oil tank with a non fling chain oil, switch the ignition switch to on, pull the choke fully out, push in the deco valve if fitted, place the machine on the ground, with the tip of the bar away from any obstructions, put your right foot through the back handle to hold the saw down, place your straightened left arm and hand onto the top handle again to hold the machine, now with your right hand crank the engine until it fires once, at this point push the choke fully back in, crank the engine once again until it fires up, flick the trigger to dissengage the part throttle , the machine should now idle.
Be carefull.

Jun 05, 2011 | Poulan Garden

1 Answer

Chain saw won't start


Things to check,drain and re fill with fresh fuel/oil mix, replace the fuel filter in the fuel tank, remove the spark plug, rest on top of the cylinder and check for a spark, if this is all ok remove the muffler and check the condition of the piston through the exhaust port, any signs of damage and the saw will have to come apart for further investigation.

May 30, 2011 | McCulloch 16 Inch Gas Chain Saw MCC1635AK

1 Answer

After adjusting. Chain and running saw. FOR A COUPLE OF MINUTES. THE CHAIN. GETS REAL TIGHT STALLING THE SAW


sounds like your chain oil-er is NOT working, pull bar and take a stiff feeler gage and go around the whole bar cleaning the groove out and then make sure the oil hole in bar is clean also because if hole going to bar groove is plugged you won't get oil to lube chain. fill with oil and start and run on piece of cardboard or similar to see if it is throwing oil off chain, if so you are good, if not you are looking at cleaning/and or replacing oil pump Good Luck

May 16, 2011 | Homelite Garden

1 Answer

Relatively new (used once) 45cc petrol chainsaw starts fine but when you use the throttle to make the chain go round it does so slowly before cutting out. There is plenty of fuel and plenty of chain oil


Make sure the chain oil is reaching the chain. Can you turn the chain by hand fairly easily? If not, then the chain tension should be adjusted--loosen the drive cover fasteners enough to allow the bar to move up and down somewhat. Turn the chain adjuster screw CCW so that the chain can be moved by hand, but the chain should not droop from the lower bar edge. Re-tighten the cover fasteners and recheck the chain tension. If ok, try to run the saw again--it should run at full speed, 4-stroking lightly, but immediately 2-stroking when cutting. Make sure the fuel mix is fresh using a modern synthetic saw oil and shaking the container thoroughly each time just before filling the tank to prevent oil starvation. Check the fuel filter, air cleaner, and muffler for plugging. Check the fuel lines for decay or other damage. Hope that some of this helps!

Jan 04, 2011 | Garden

1 Answer

I have an old McCullough chain saw 12 or 14 inch chain length. What is the oil to gas ratio I need to use? 50:1? 40:1? What do you recommend? I can't see any serial number or identifying numbers so the...


Run 40:1 using fresh fuel and a modern synthetic saw oil--mix it in it's own can and be sure to shake the can thoroughly each time just before refilling the tank. Don't mix up more than a gallon unless your business is sawing. You may need to deal with a plugged fuel filter if it won't start. The oiler button was intended to supplement the pumped bar oil when cutting thick/difficult wood. Normally, it is not needed. To start, set the choke full on until you hear a pop, then back the choke off about half way before the next pull (don't forget to set the fast idle button near the throttle--squeeze the throttle, push the button and hold while releasing the throttle). As soon as you squeeze the throttle again, that will release the fast idle, so make sure the engine is warmed up and the choke off before hitting the throttle. This engine will drive a 16" bar and chain, so upgrade when the original parts wear out. Hope some of this helps!

Oct 19, 2010 | McCulloch 16 Inch Gas Chain Saw MCC1635AK

1 Answer

Why wont my chainsaw tick over, it revs up but not tick over. also, cannot start it after 2-3 mins of usage, why?


Check the air cleaner and muffler for plugging. Try turning the idle speed screw (not the L jet screw) CW one full turn. Does it now idle? If the chain keeps turning at idle, back off the speed screw until the chain stops after revving the engine. When the engine won't start, remove the spark plug and check for blue, snappy spark. If the plug insulator is black, try a new correct type plug. If sparks ok, then squirt some fuel mix into the plug hole, replace the plug and try to start. If you get a pop or two, then fuel delivery is a likely problem. If it again runs, the plug may have been the problem. Otherwise, check the fuel filter, fuel line, and carburetor for any loose fasteners. Finally, run the engine at full throttle--it should 4-stroke with no load, but immediately 2-stroke when cutting. Adjust the H jet needle to achieve this. hope this helps!

May 19, 2010 | McCulloch 16 Inch Gas Chain Saw MCC1635AK

1 Answer

Husqvana 65 chain saw will rev fully when idle but dies when introduced to timber


Sounds like the saw is running lean. Check the fuel filter, air cleaner and muffler for plugging. Check the condition of the fuel lines and that the fasteners on the carburetor are tight. If all ok, turn the 'L' and 'H' jet needles on the carburetor CW to stops (lightly), then back out each 1-1/2 turns CCW. This is a basic setting and the engine should start and run. Allow the engine to warm up, pull the throttle full on, and adjust H CW until the engine starts to speed up, but continues to 4-stroke. Proper adjustment is when the engine 4-strokes, but immediately 2-strokes when cutting. This produces the most power and least heat. Allow to idle and adjust L CW until the engine runs fairly well, yet will allow it to 'follow the throttle'. Set the idle speed screw til the chain stops moving, but keeps the engine running. Hope this helps!

May 12, 2010 | Garden

1 Answer

I have a poulan pro pp4620avhd chainsaw. I can get it to start and stay running as long as I have the choke on. I can even run it at high speed using the choke control. When I pull the trigger to feed it...


Check the fuel filter and muffler for plugging. Check the fuel lines for condition. Check the carburetor fasteners for tightness. If the saw has a lot of hours, remove the lower section of the carburetor and check the condition of the diaphragm--it should not be hard/cracked. If everything seems to check out ok, Turn both jet screws CW to stops (lightly), then CCW each 1-1/2 turns. The engine should start and run--allow the engine to warm up. Pull the throttle full on and adjust H needle CW til the engine speeds up, but still 4-strokes. Proper adjustment is when the engine 4-strokes, but immediately 2-strokes when cutting. Let idle and adjust L CW so that the engine runs fairly well, but allows the engine to 'follow the throttle'. Adjust the idle speed screw so that the chain stops turning, but the engine continues to run. Hope this helps!

May 11, 2010 | Poulan Pro Chain Saw 46cc 20"

2 Answers

Tunning specification for a stihl 028 chainsaw?


I'm not sure there are any "endorsed" tuning specs from Stihl as weather, temperature, fuel quality etc all contribute to engine performance.
Pictures of all types are all over the web.

As for the carb tuning procedure, maybe I can help?

Start with fresh fuel, all filters clean, and bar and chain installed. Also, fill the chain oil tank with bar/chain oil and VERIFY that the chain oiler works properly.
Initial fuel mixture settings (the H and L screws) should be 1.5 - 2 complete revolutions counter clockwise from lightly seated. Sight the carb's throttle plate and adjust idle screw counter clockwise until the plate stops moving.(Throttle closed completely.) Then go back clockwise 3 complete revolutions. This will produce an acceptable startup condition on a HEALTHY saw.
Clamp the bar in a STURDY bench vise and roll the chain with the shank of a screwdriver to verify it is clear. BE SAFE!
Choke the saw and pull the starter rope until the engine "burps".
NOTE: If no burp after 6 pulls, stop! Something is wrong.
After the burp, set choke to half and pull starter until it runs. The settings I gave should produce a slightly rich condition and a slightly high idle. (Chain will be in motion!)

Blip the throttle trigger and idle it down just enough to keep it running during the tune procedure.
Step 1) Using the "L" screw (closest to the engine), turn it clockwise until the engine smooths out or possibly increases RPM. Back it out slightly until the engine has a slight "LOPE" sound to it. (Like a drag car on nitro).
Step 2) Accelerate the engine to full throttle and go to the "H" screw (closest to the air filter) and slowly turn it clockwise and note the RPM increase. There will come a point when the saw will "Top-Out" and loose power. Not even enough power to turn an maintain empty chain's RPM! Go back counter clockwise to the edge of that point, and counter clockwise another fourth (1/4) revolution.
Step 3) Idle the saw back down. Again go to the "L" screw and repeat Step 1.
Step 4) Repeat Step 2.
Step 5) Idle the saw down until the chain stops moving completely. NOTE: Don't settle for a "crawling chain" condition. If the steps above are performed well and all else is healthy, you should be able to idle the engine down to a ridiculously low RPM and it will not shut off.

Hope this helps,
Dolf-

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1 Answer

Poulon Wildthing 18" Gas Chain Saw


Some Poulans vent thru a fuel line going from the tank to the carburetor. Some vent thru the cap but eventually the duck bill valve starts leaking fuel. Then I suspect some people change that cap to one without a vent, which causes the problem you are describing.

Sep 11, 2008 | Poulan Wild Thing 2375 18" Gas Chain Saw...

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