RedMax GZ4000 Owners Manual - Page 13

7. Operation F12 F14 WARNING Keep clear of the saw chain as it will start rotatIng upon starting of engine. ■ CHECKING OIL SUPPLY WARNING Make sure to set up the bar and the chain when checking the oil supply. If not, the rotating parts may be exposed. It is very dangerous. After starting the engine, run the chain at medium speed and see if chain oil is scattered off as shown in the figure. (F12) (1) Chain oil ■ ADJUSTING CARBURETOR (F14) The carburetor on your unit has been factory adjusted, but may require fine tuning due to change in operating conditions. Before adjusting the carburetor, make sure that provided are clean air/fuel filters and fresh, properly mixed fuel. When adjusting, take the following steps: NOTE Be sure to adjust the carburetor with the bar chain attached. 1. H and L needles are restricted within the number of turn as shown below. H needle -1/4 L needle fixed 2. Start engine and allow it to warm up in low speed for a few minutes. 3. Turn idle adjusting screw (T) counter-clockwise so that saw chain does not turn. If idling speed is too slow, turn the screw clockwise. 4. Make a test cut adjust the H needle for best cutting power, not for maximum speed. (1) L needle (2) H needle (3) Idle adjusting screw 13 