Zenoah G3800 owner manual Operating the Engine, Starting the Engine, Set the switch to I position

G3800

5. Operating the Engine

It is very dangerous to run a chainsaw that mounts broken parts or lacks any parts. Before starting engine, make sure that all the parts including bar and chain are installed properly.

■STARTING THE ENGINE

1.Fill fuel and chain oil tanks respectively, and tighten the caps securely.

Fuel	Chain oil
2. Set the switch to “I” position.
Switch	Throttle
	interlock

Throttle lever

3.Pull out the choke knob to the second-stage posi- tion. The choke will close and the throttle lever will

then be set in the starting position.

Choke knob

Note: When restarting immediately after stopping the engine, set the Choke knob in the first-stage position (choke open and throttle lever in the starting position).

Note: Once the choke knob has been pulled out, it will not return to the operating position even if you press down on it with your finger. When you wish to return the choke knob to the operating position, pull out the throttle lever instead.

4.While holding the saw unit securely on the ground, pull the starter rope vigorously.

Do not start the engine while the chain saw hangs in one hand. The saw chain may touch your body. This is very dangerous.

5.When engine has ignited, first push in the choke knob to the first-stage position and then pull the starter again to start the engine.

6.Allow the engine to warm up with the throttle lever pulled slightly.

Keep clear of the saw chain as it will start	G
rotatIng upon starting of engine.
■ CHECKING THE OIL SUPPLY	B

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.

Chain oil

The chain oil flow can be changed by inserting a screw- driver in the hole on bottom of the clutch side. Adjust according to your work conditions.

Rich	Chain oil flow
Lean	adjusting

■ADJUSTING THE CARBURETOR

L needle H needle

Idle adjusting screw

The carburetor on your unit has been factory adjusted, but may require fine tuning due to a change in operat- ing conditions.

Before adjusting the carburetor, make sure that the pro- vided air/fuel filters are clean and fresh and the fuel prop- erly mixed.

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 : -1/4

2.Start the engine and allow it to warm up in low speed for a few minutes.

3.Turn the idle adjusting screw (T) counterclockwise so that the saw chain does not turn. If the idling speed is too slow, turn the screw clockwise.

4.Make a test cut and adjust the H needle for best cutting power, not for maximum speed.

GB-9