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hello all, having problem.. i bought this chainsaw in 1971,only used it 2 times..it always started until i left varnish build up in it..
so, i soaked carb and cleaned it, i blew out the carb with air..
then carb rebuilt kit.i also replaced the carb mounting gasket..i removed the fuel filter..
i have to keep the choke on to get it to run, it starts on first pull but when i turn choke off, it dies..
i had to remove adjustment screws to clean carb.. i set these at 3/4 out..there is low/high screws and idle screw..dont know if that 3/4 out is proper settings as i have no manual for this saw..
i put in new spark plug also..
anyone have suggestion what may be wrong..thanks
so, i soaked carb and cleaned it, i blew out the carb with air..
then carb rebuilt kit.i also replaced the carb mounting gasket..i removed the fuel filter..
i have to keep the choke on to get it to run, it starts on first pull but when i turn choke off, it dies..
i had to remove adjustment screws to clean carb.. i set these at 3/4 out..there is low/high screws and idle screw..dont know if that 3/4 out is proper settings as i have no manual for this saw..
i put in new spark plug also..
anyone have suggestion what may be wrong..thanks
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T=?
H='High Speed'
L='Low Speed'
Are you sure the T is not maybe an I instead?
In any case, I suspect the T would be the Idle Stop adjustment, which basically just holds the throttle open to keep the engine running at Idle, screwing it in (clockwise) should increase the idle speed, while unscrewing (counter clockwise) will decrease the idle speed.
The low speed adjustment is a mixture adjustment, screwing it in (clockwise) leans out the mixture (less fuel) and unscrewing (counter clockwise) enriches the mixture (more fuel). The same holds true for the high speed adjustment screw.
The high speed is adjusted for high speed operation (cutting with full or partial throttle) and the low speed is adjusted for low speed (idle) operation.
Since your engine want's to die at idle, you may not be getting enough fuel at low speeds, you may want to turn the low speed screw out (counterclockwise) a 1/4 turn or so to see if that helps. It's also possible that your carburetor may need service and possibly new diaphragms to make it operate properly.
H='High Speed'
L='Low Speed'
Are you sure the T is not maybe an I instead?
In any case, I suspect the T would be the Idle Stop adjustment, which basically just holds the throttle open to keep the engine running at Idle, screwing it in (clockwise) should increase the idle speed, while unscrewing (counter clockwise) will decrease the idle speed.
The low speed adjustment is a mixture adjustment, screwing it in (clockwise) leans out the mixture (less fuel) and unscrewing (counter clockwise) enriches the mixture (more fuel). The same holds true for the high speed adjustment screw.
The high speed is adjusted for high speed operation (cutting with full or partial throttle) and the low speed is adjusted for low speed (idle) operation.
Since your engine want's to die at idle, you may not be getting enough fuel at low speeds, you may want to turn the low speed screw out (counterclockwise) a 1/4 turn or so to see if that helps. It's also possible that your carburetor may need service and possibly new diaphragms to make it operate properly.