Hello all. I have a question concerning the above
I fix/repair chainsaws on a regular basis and this one has me absolutely stumped!!! I have spend hours trying to figure it out
So a customer of mine brought me 3 ea husky 390xp chainsaws. any where from 2015-2018 production models
Every single one of them bogs down exactly the same way. At high end they cutout like they have ran out of gas and i cannot seems to figure out why. Sometimes immediately, sometimes after 1 tank, sometimes 2 tanks. It is random of when it does it. I am concentrating on only one at a time until i figure it out, and when i do, i can easily fix the other two.
So on saw #1, this is what i have done so far.
- Changed impulse line, changed fuel line, changed coil, changed piston, changed ignition switch, changed spark plug, cleaned carb with heated ultrasonic cleaner with a new Carb kit (all three carbs), sprayed starting fluid all around boots, cylinder, pto/clutch, flywheel side etc to check for air leaks. Totally removed clutch, clutch drum, and oil pump and them sprayed directly onto crank seal with no leaks anywhere i can find. I also ruled out tank vent as when it was bogging out i removed gas cap to ensure vapor lock wasn't happening etc. It will idle all day long, so even more the reason i do not think its an airleak.
My next step is going to, and is on order, to put a brand new OEM carburetor, but i find it hard to believe that three carbs are all bad with exactly the same symptoms. And especially when they have been 100% cleaned for over an hour in a heated ultrasonic tank with new water/degreaser solution and then sprayed with carb cleaner and all tiny orifices 100% cleaned out and verified as being clean. And for that matter, 3 bad coils, three bad fuel lines etc etc. Chances of 3 ea of anything being bad on 3 ea saws are slim to none IMO
Anyone possibly have this same issue and/or can help me figure.
I fix/repair chainsaws on a regular basis and this one has me absolutely stumped!!! I have spend hours trying to figure it out
So a customer of mine brought me 3 ea husky 390xp chainsaws. any where from 2015-2018 production models
Every single one of them bogs down exactly the same way. At high end they cutout like they have ran out of gas and i cannot seems to figure out why. Sometimes immediately, sometimes after 1 tank, sometimes 2 tanks. It is random of when it does it. I am concentrating on only one at a time until i figure it out, and when i do, i can easily fix the other two.
So on saw #1, this is what i have done so far.
- Changed impulse line, changed fuel line, changed coil, changed piston, changed ignition switch, changed spark plug, cleaned carb with heated ultrasonic cleaner with a new Carb kit (all three carbs), sprayed starting fluid all around boots, cylinder, pto/clutch, flywheel side etc to check for air leaks. Totally removed clutch, clutch drum, and oil pump and them sprayed directly onto crank seal with no leaks anywhere i can find. I also ruled out tank vent as when it was bogging out i removed gas cap to ensure vapor lock wasn't happening etc. It will idle all day long, so even more the reason i do not think its an airleak.
My next step is going to, and is on order, to put a brand new OEM carburetor, but i find it hard to believe that three carbs are all bad with exactly the same symptoms. And especially when they have been 100% cleaned for over an hour in a heated ultrasonic tank with new water/degreaser solution and then sprayed with carb cleaner and all tiny orifices 100% cleaned out and verified as being clean. And for that matter, 3 bad coils, three bad fuel lines etc etc. Chances of 3 ea of anything being bad on 3 ea saws are slim to none IMO
Anyone possibly have this same issue and/or can help me figure.
