Zenoah GZ4000 - Manual (Page 9)

GZ4000
GB-9
G
B
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
rotatIng upon starting of engine.
■ CHECKING THE OIL SUPPLY
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 fig-
ure.
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.
Note: The oil tank should become nearly empty by the time fuel is
used up. Be sure to refill the oil tank every time when refueling the
saw.
■ ADJUSTING THE CARBURETOR
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.
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.
2. Set the switch to “I” position.
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.
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 in very dangerous.
L needle H needle
Idle adjusting
screw
5. Operating the Engine
Chain oil
Fuel
Switch
Throttle lever
Throttle
interlock
Choke knob
Chain oil
Rich Chain oil flow
adjusting
Lean