Operating Procedures - Hitachi Koki CG 25EUS L Bedienungsanleitung

English
○ If your unit has guard location label on drive shaft tube, follow
the indication.
○ To remove the guard extension, refer to the drawings. Wear
gloves as the extension has a sharp line limiter, then push the
four square tabs on the guard one by one in order. (Fig. 10)
Installation of semi-auto cutting head
1. Function
Automatically feeds more nylon cutting line when it is tapped at
low rpm (not greater than 4500 rpm).
Specifi cations
Code Type of
No. attaching screw
6696454 Female screw
Applicable nylon cord
Cord diameter: Φ3.0 mm Length: 2 m
Cord diameter: Φ2.4 mm Length: 4 m
2. Precautions
○ The case must be securely attached to the cover.
○ Check the cover, case and other components for cracks or
other damage.
○ Check the case and button for wear.
If the wear limit mark on the case is no longer visible or there
is a hole in the bottom of the button, change the new parts
immediately. (Fig. 11)
○ The cutting head must be securely mounted to the unit's gear
case.
○ For outstanding performance and reliability, always use Hitachi
nylon cutting line. Never use wire or other materials that could
become a dangerous projectile.
○ If the cutting head does not feed cutting line properly, check
that the nylon line and all components are properly installed.
Contact your Hitachi dealer if you need assistance.
3. Installation (Fig. 12)
○ Install cutting head on gear case of grass trimmers/brush
cutters. The mounting nut (12) is left-hand-threaded. Turn
clockwise to loosen/counterclockwise to tighten.
NOTE
○ Since the cutter holder cap is not used here, keep it for when a
metal blade is used, if so equipped.
○ Insert Allen wrench (13) into the hole of the gear case in order to
lock the cutter holder.
Installation of cutting blade (Fig. 13)
(If so equipped)
When installing a cutting blade, make sure that there are no cracks
or any damage in it and that the cutting edges are facing the correct
direction.
NOTE
○ When installing cutter holder cap (14), be sure to set concave
side upward.
○ Insert the alien wrench (15) into the hole of the angle
transmission in order to lock the cutter holder (16). Please note
that the cutter fi xing bolt or nut (17) has left-handed threads,
(clockwise to loosen/ counter-clockwise to tighten). Tighten the
fi xing bolt or nut with the box wrench.
CAUTION
○ Before operation, make sure the blade has been properly
installed.
○ If your unit is equipped with protection cover under a cutting
blade, check it for wear or cracks before operation. If any damage
or wear is found, replace it, as it is an article of consumption.
10
Direction of Size of
rotation attaching screw
Counterclockwise M10×P1.25-LH
Installation of the Brain cutting head
WARNING
For Hitachi heads or Hitachi alloy head, use only fl exible, non-
metallic line recommended by the manufacturer. Never use
wire or wire ropes. They can break off and become a dangerous
projectile.
NOTE
When using Hitachi alloy head (CH-100), initial cutting line
length should be about 17 cm each. (Fig. 14)

OPERATING PROCEDURES

Engine oil
○ Always use the specifi ed engine oil (multigrade oil of
classifi cation SAE 10W-30). Insuffi cient engine oil or using
engine oil other than the specifi ed type may cause breakdown
of the unit.
Filling up with engine oil
○ Place the unit horizontally on a clean, fl at surface.
○ Remove the oil cap and check whether the engine oil comes up
to the mouth of the oil tank opening. (Fig. 15)
○ If the oil level is low or when using the unit for the fi rst time, fi ll
the tank with engine oil up to the mouth of the oil tank opening.
○ If the engine oil is conspicuously dirty or discolored, change the
oil.
○ Tighten the oil cap securely after fueling.
○ When using the unit for the fi rst time, change the engine oil after
running the engine for approximately 10 hours. Subsequently,
change the oil after every 50 hours of operation.
CAUTION
○ To avoid the risk of burn injuries, allow the engine to cool
thoroughly before changing the engine oil.
○ To prevent breakdown, ensure that no sand or dirt gets into the
tank while refueling.
Fuel
WARNING
Provide good ventilation, when fueling or handling fuel.
○ Always use branded 89 octane unleaded gasoline.
○ Do not use a mixture of gasoline and engine oil as this may lead
to starter failure or power reduction.
Fueling
WARNING
○ Always shut off the engine before refueling.
○ Slowly open the fuel tank, when fi lling up with fuel, so that
possible over-pressure disappears.
○ Tighten the fuel cap carefully, after fueling.
○ Always move the trimmer at least 3 m from the fueling area
before starting.
Before fueling, clean the tank cap area carefully, to ensure that no
dirt falls into the tank.
Starting (Fig. 16)
CAUTION
Before starting, make sure the cutting attachment does not
touch anything.
1. Set ignition switch (18) to ON position. (Fig. 16)
* Push priming bulb (19) several times so that fuel fl ows through
the bulb or return pipe. (If so equipped) (Fig. 17)
2. Set choke lever to CLOSED position (20). (Fig. 18)
3. Pull recoil starter briskly, taking care to keep the handle in your
grasp and not allowing it to snap back.
4. When you hear the engine want to start, return choke lever to
RUN position (open). Then pull recoil starter briskly again.