Are the carb jets clogged? The low and high carb adjustments fail to change my Husc. saw speed. It says running (rough) only when the trigger is depressed. Fresh gas, new air filter, and new plug. The saw had not been used for a year+. Are the carb jets clogged? Do they need cleaning? How should that be done?
Fuel, Chain saws are the most pickiest when it comes to fuel, I normally buy the Premixed Fuel already made for me at lowes they have a 40:1 and a 50:1 ratio mixes. I would try that.
Testimonial: "Thanks, I might have to try that tho the gas (one gallon) was just purchased and mixed with oil from a small botlle the exact amount for one gallon of gas."
ya chain saws dont like the diy mix gas they are picky about it. the premix isnt expensive and its the best choice. If you really want to clean the carb you have to take it apart and buy a carburator rebuild kit for that make and model for that type of chain saw. its not hard, but you gotta be carful not to strip anything.
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SOURCE: I have a husqvarna 55. I put in a new carb, coil,
If you are still having problems I would check or replace white grommet inserted into cylinder and connected to manifold,they have issues with breaking or blowing out.This model also has problems with the black intake boot not sealing around cylinder and manifold,an easy check by spraying a LITTLE carb cleaner around problem area.
SOURCE: chain saw carburator settings for husqvarna 61
Turn both screws CW to stops (lightly), then back out CCW 1-1/2 turns each. This is a basic setting and the engine should start and run. Allow the engine to warm up, then pull the throttle full on. Turn the H jet screw CW until the engine starts to speed up, but still 4-strokes. Proper adjustment occurs when the engine is 4-stroking, but immediately 2-strokes when cutting. This gives best power and lowest heat. Release the throttle and adjust L jet CW until the engine idles fairly well, but will allow the engine to 'follow the throttle'. Adjust idle speed screw so that the chain stops turning, but the engine continues to run. Hope this helps!
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Assuming the carb isn't contaminated with debris I would check / reset the carb settings.
Lightly seat the low and high speed screws and back them out 1 1/4 turns. Try so start saw...if it starts and will idle then let the saw warm up. If it won't start then Back the low speed screw out 1/4 turn...try again.
Once the saw is warm then set the idle screw so the chain just stops rotating. Adjust the low speed screw inwards and listen for the rpm to increase as you do...keep going until it starts to drop in rpm....back the screw out until rpms have peaked and back the screw a bit more past that...less than 1/4 turn. Try to work the throttle and tweak the low speed screw until the saw revs crisply...readjust idle speed.
Apply full throttle and turn the high speed screw in until you hear the saw "sing"....it will get very smooth and the rpms will increase. DO NOT leave the screw at this setting as it is running very lean and will burn up in short order. Back the screw out until you hear the saw tone "roughen"...the revs will drop a bit and the smoothness in the exhaust tone will disappear. Back the screw out a bit more past the point where the saw tone start to roughen....this will make sure there is sufficient fuel when the saw starts to actually cut.
If none of this works for your saw I would suspect the carb needs to be cleaned / kitted. Also doublecheck that there are no air leaks between the carb and cylinder. Air leaks could be caused by bad gaskets and or loose mounting fasteners.
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Make sure the chain break is releasing all the way. When the saw is not running release the chain break and make sure you can move the chain back and forth by hand. If you can there is a small fuel filter in the gas tank that should be replaced. Make sure the fuel lines are not spongy because they could collasp when the engine is running starving the carburetor for fuel.
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