How to adjust the carburetor of chainsaw?

Step 1: Put the screw back to its original position to prevent confusion, tighten the L and H keys clockwise, and then retreat 1.5 turns each.

Step 2: Adjust the idle speed L key to the highest point (the highest number of revolutions without refueling door), and then retreat to 1/8 revolutions.

Step 3: Adjust the T key to the best state of 2800-3200 rpm (the machine will not turn off without refueling, and the chain will not turn with it).

Step 4: H needle is controlled at 9000- 10000 rpm, and the rpm should not be too high. Too high is easy to pull the cylinder, too low is not strong. Friends who don't have a tachometer can only rely on their feelings, that is, they turn the throttle to the maximum, sound like screaming, and the number of revolutions feels very high. In fact, sawing trees is powerless. I suggest you listen to the sound of the new chainsaw more often, and you can find that feeling by comparing it.

Extended data:

The carburetor is mainly adjusted by the coordination of three adjusting screws, L, T and H, which makes the chain saw idle smoothly and transition smoothly, and then obtains the maximum power.

"L" low-speed adjusting screw, when the engine is idling, the concentration of mixed steam is controlled by "L", which turns clockwise to dilute (increase the speed) and turns counterclockwise to thicken (decrease the speed). By adjusting the high-speed adjusting screw "H", when the engine suddenly increases the throttle, it will not stall and a smooth transition can be obtained.

"T" idle speed adjustment screw, "L" adjustment, that is, adjust this screw to adjust the engine to a stable minimum speed, and the chain will not rotate.

"H" high-speed adjusting screw, the concentration of mixed steam is mainly controlled by it when the engine runs at high speed and heavy load. When working at high speed, if the mixture concentration is lean, the engine speed will rise rapidly, the exhaust sound will be crisp and the engine torque will be small; The mixture concentration is too strong, the engine speed rises slowly, and it can't get up at high speed, and the exhaust sound is dull and black smoke is emitted.

Note: Before adjusting the carburetor of chainsaw, make sure that the carburetor is clean, and the air filter, fuel filter and related oil circuits are unblocked, otherwise, it will be of no help to adjust it.