Hitachi CM 75EAP Mode D'emploi page 11

Adjustment of belt
1. Loosen the nut (9) with the combi box spanner (6) so that
the arm cover can (10) move. (Fig. 11)
2. Use the hex. wrench (4) to rotate the tensioner bolt (11)
so that the position of the tension nut (12) matches with
the marking (13) on the arm cover (10). (Fig. 12, Fig. 13)
3. Tighten the nut again.
NOTE
Suffi cient power is not transmitted to the wheel when the
belt is loose. Appropriately adjust the belt as necessary.
Adjustment of wheel guard
1. Wheel guard (14) can be moved by hand without using
a tool. To adjust the wheel guard (14), use handle(W)
(15), or press the end of wheel guard (14) against the
workpiece. (Fig. 14)
Make sure to adjust the wheel guard (14) to shield you
from any fl ying debris. (Fig. 15)
Wet cutting with water
This machine can be set up for wet cutting which can
suppress dust emission during cutting.
1. Remove coupler (16) by pulling the coupler from the
machine. (Fig. 16)
2. Remove the ring (17) from the coupler, slide the ring over
the hose and insert the hose to the coupler. (Fig. 17)
3. Re-tighten the ring to the coupler securely.
4. Reattach the coupler to the machine until it locks into
position.
5. Running water into the hose, turn the lever (18) of valve
(19). (Fig. 18) This will supply to the cut-off wheel.
Warning
The cut-off wheel that is included with this machine is an
abrasive cut-off wheel for concrete, stone, or masonry.
When cutting with water supplied to this cut-off wheel,
use the wheel up on the same day. There is a risk of
bursting when using the abrasive wheel wetted in this
manner on the following day.
For other cut-off wheels, follow the instructions provided
with those cut-off wheels.
Mounting the tools to the machine (Fig. 19)
This machine is designed to store the combi box spanner (6)
and hex. wrench (4).
OPERATING PROCEDURES
Fuel
WARNING
○ The machine is equipped with a two-stroke engine.
Always run the engine on fuel, which is mixed with oil.
Provide good ventilation, when fueling or handling fuel.
○ Fuel is highly fl ammable and it is possible to get seriously
injured when inhaling or spilling on your body.
Always pay attention when handling fuel. Always have
good ventilation when handling fuel.
Fuel (Fig. 20)
○ Always use branded 89 octane unleaded gasoline.
○ Use genuine two-cycle oil or use a mix between 25:1 to
50:1, please consult about the oil mixture ratio to Hitachi
Authorized Service Centers.
○ If genuine oil is not available, use an anti-oxidant added
quality oil expressly labeled for air-cooled 2-cycle engine
use (JASO FC GRADE OIL or ISO EGC GRADE). Do not
use BIA or TCW (2-stroke water-cooling type) mixed oil.
○ Never use multi-grade oil (10 W/30) or waste oil.
○ Never mix fuel and oil in machine's fuel tank. Always mix
fuel and oil in a separate clean container.
Fuel mixing method
Always start by fi lling half the amount of gasoline, which is to
be used into container.
Then add the whole amount of oil. Mix (shake) the fuel
mixture. Add the remaining amount of gasoline.
Mix (shake) the fuel-mix thoroughly before fi lling the fuel tank.
Mixing amount of two-cycle oil and gasoline
Gasoline (Liter)
0.5
1
2
4
Fueling (Fig. 21)
Before fueling, clean fuel tank cap (20) area carefully to
ensure that no dirt falls into the tank. Make sure that the fuel
is well mixed by shaking the container before adding fuel.
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 fuel.
○ Slowly open the fuel tank cap (20), when fi lling up with
fuel, so that possible overpressure 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 leaking 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.
Starting the cold engine (Fig. 22-27)
CAUTION
Before starting, make sure that the cut-off wheel does
not touch anything.
1. Set stop switch (21) to ON position. (Fig. 22)
2. Pull choke lever (22) fully to set it in the START position.
(Fig. 23)
3. Push the priming pump (23) approximately ten times so
that fuel fl ows into carburetor. (Fig. 24)
4. Fully pull the throttle lever (24) while pressing the throttle
lever lockout (25). Then press the throttle lock (27).
This will automatically lock to half throttle, to aid in
starting the engine. (Fig. 22)
5. Push the decompression valve (26). The valve will
automatically return to the original position once the
engine has started. (Fig. 25)
6. Holding the tool in position with the left hand on the front
handle (29) and the right foot pressing down on the rear
handle (30), rapidly pull the starter knob (28). (Fig. 26)
7. When you hear fi rst ignition, push the choke lever (22)
fully to set it in the run position. (Fig. 27)
8. Push decompression valve (26) again.
9. Pull starter knob (28) rapidly again in the aforementioned
manner.
10. As soon as the engine starts, pull throttle lever (24)
full once with throttle lever lockout (25) pressed and
immediately release throttle lock (27). Then half throttle
is disengaged.
11. Allow the engine to warm up for about 2 to 3 minutes
before cutting.
NOTE
To avoid reducing engine life, do not run the engine at
high speeds without any load over a long period of time.
Starting the warm engine
Use only 1, 5, and 6 of the starting procedure for a cold
engine.
If the engine does not start, use the same starting procedure
as for a cold engine.
11
English
Two-cycle oil (ml)
Ratio 50:1 Ratio 25:1
10 ———
20 ———
40 ———
80 ———
20
40
80
160