Operating Procedures - Hitachi CG 25UAPL Instrucciones De Manejo

WARNING
For Hitachi heads, 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.
3. Installation (Fig. 12)
Insert the hex bar wrench (20) into the hole of the gear
case and groove of the cutter holder (A) (21) in order to
lock the shaft.
Install cutting head on gear case of grass trimmers/brush
cutters. The mounting nut is left-hand-threaded. Turn
clockwise to loosen/counter-clockwise to tighten.
NOTE
Since the cutter holder cap is not used here, keep it for
when a metal blade is used, if so equipped.
4. Adjusting line length
Set the engine speed as low as possible and tap the
head on the ground. The nylon line will be drawn out
about 3 cm with each tap. (Fig. 13)
Also, you can extend the nylon line by hand but the
engine must be completely stopped. (Fig. 14)
Adjust the nylon line to the proper length of 11–14 cm
before each operation.
Installation of cutting blade (Fig. 15)
(If so equipped)
Insert the hex bar wrench (20) into the hole of the gear case
and groove of the cutter holder (A) (21) in order to lock the
shaft.
Assemble in the following order: Cutter holder (A) (21),
blade (22), cutter holder (B) (23), nut cover (24).
Tighten the fi xing nut with the combi box spanner with a
tightening torque of 14 ± 2 N.m. Please note that the cutter
fi xing nut (25) has left-handed threads (clockwise to loosen/
counter-clockwise to tighten).
NOTE
○ When installing cutter holder (B) (23), be sure to set
concave side upward.
○ When installing or removing a blade, make sure to wear
gloves and place the blade cover over the blade.
CAUTION
Check a nut cover (24) for wear or cracks before
operation. If any damage or wear is found, replace it, as
it is an article of consumption.
WARNING
○ 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.
○ Remove any surface grit from blade installation fi ttings
(cutter holder (A) (21), cutter holder (B) (23), nut
cover (24), nut (25)). Failure to do so may result in the
loosening of nuts.
○ The protrusion of the cutter holder (A) (21) may become
misaligned with the blade (22) while tightening nut
(25). Before operation, make sure the blade has been
properly installed. (Fig. 16)
○ Rotate the blade by hand and make sure there is no
rocking or abnormal noise. Rocking may cause abnormal
vibrations or result in the loosening of nuts.

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. 17)
○ 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.
○ Fuel contains highly fl ammable and it is possible to get
the serious personal injury when inhaling or spilling on
your body. Always pay attention when handling fuel.
Always have good ventilation when handling fuel inside
building.
○ 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 and let it cool for a few
minutes before refueling.
Do not smoke or bring fl ames or sparks near the fueling
site.
○ Slowly open the fuel tank, when fi lling up with fuel, so
that possible over-pressure disappears.
○ Tighten the fuel tank cap carefully, after fueling.
○ Always move the unit at least 3 m from the fueling area
before starting.
○ Always wash any spilled fuel from clothing immediately
with soap.
○ Be sure to check any fuel leakage after refueling.
○ Before fueling, in order to remove static electricity from
the main body, the fuel container and the operator,
please touch the ground that is slightly damp.
Before fueling, clean the tank cap area carefully, to ensure
that no dirt falls into the tank.
Starting
CAUTION
Before starting, make sure the cutting attachment does
not touch anything.
(1) Starting the cold engine
1. Set ignition switch (26) to ON position. (Fig. 18)
2. Push priming bulb (27) several times so that fuel fl ows
through return pipe (28). (Fig. 19)
3. Set choke lever (29) to START position (closed) (A).
(Fig. 20)
4. Pull recoil starter briskly, taking care to keep the handle
in your grasp and not allowing it to snap back. (Fig. 21)
5. When you hear the engine want to start, return choke
lever to RUN position (open) (B). (Fig. 20)
6. Pull recoil starter briskly again. (Fig. 21)
NOTE
If engine does not start, repeat procedures from 2 to 5.
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English