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Hi..in general i always set the high and low screws at 2 turns out from a complete stop..and please dont tighten the screws too tight..it will bend the needles...I think it will..or should run at them settings...as far as the gas out of the engine..it is or has a problem with the carb...did you remove the carb...? Also try starting it with only starting fluid for a very short time..this is how I check to see if all else is ok..spray it in the carb in take...
The carb is factory set you need to remove carb you will then see two screws one marked L and the other H with a small hacksaw cut a slot across both screws don't worry about cutting into carb body this can't be helped screw both screws fully in then back them off 1 and 1/4 turns this rough sets high and low running start saw set low speed first adjust screw in or out to get best low running then rev saw to max.and adjust max revs do the same as you did with the low speed screw to obtain max revs this should solve your problem.
Usually when purchasing a new Carb, they are set very close. No adjustment needed. But if you want to play, turn both the High and Low screws all the way in then turn them bot out about 1.5 turns. that should get it started. The you will need to tweak the High sped and then the low speed and then the Idle
Hi, most chainsaws start with carb settings at 1&1/4 turns out( hi+lo) usually once the chainsaw has been run in, the 'hi' screw can be turned in an eighth, tickover set low enough not to cut out but high enough not to engage the clutch, cheers Billy
If its flooding then its probably a carb issue. Strip and clean carb, check diaphrams and reset hi and low screws to standard settings. Screw both needles in and unscrew them:- H 3/4 of a turn anticlockwise and L 1 full turn anti clockwise.
Here's the breakdown for the carb. (dont use airlines to clean carbs)
Roy: First adjust the air and fuel screws all the way in. Do not force them... when the needle valves hit bottom, stop tightening. Turn the air and fuel screws out one and a half turns and try to start the machine. It should at least try to start. adjust the screws in or out one quarter of a turn, one screw at a time until you get the machine to run properly, then work on the idle screw to set the idle.
The high speed mixture screw is initially set at 1 & 1/2 turns out. Then adjust it to give good acceleration and top speed, while not closing the screw more than you need to. The low speed mixture screw is set at 3/4 of a turn out. Adjust that, to give a smooth idle. The 3rd screw, the idle speed screw, is set to give a low idle speed without stalling.
you those to adjust the carb hi is balls out running , sometimes it sounds sick or spudders when cutting the hi will clean that up small turns only . low is for idle. ok
You have found the HI and LOW settings. The idle wouls be set by starting and warming the unit up. After warm up, take your screwdriver and turn the LOW screw OUT until the engine starts to lose RPM's. Turn the screw IN until it starts to lose RPM's. Once you have those two points, back the screw about halfway between. You can do the same for the HI setting if you need to. Good luck...Lee
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