Operating Procedures - Hitachi CS25EPA Owner's Manual

4. Operating procedures.

Fuel (Fig. 2-1)
WARNING!
This unit 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
Always use branded 89 octane unleaded
gasoline.
Use genuine two-cycle oil or use a mix
between 25:1 to 50:1, please consult the oil
bottle for the ratio or HITACHI dealer.
Only for the state of California at 50:1.
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.
Always mix fuel and oil in a separate clean
container.
Always start by filling half the amount of fuel,
which is to be used. Then add the whole
amount of oil. Mix (shake) the fuel mixture. Add
the remaining amount of fuel.
Mix (shake) the fuel-mix thoroughly before filling
the fuel tank.
GB-8
Fig.2-1
Fig.2-3
Fueling
WARNING! (Fig.2-1B)
Always shut off the engine before refueling.
Slowly open the fuel tank (1), when filling up
with fuel, so that possible overpressure
disappears.
Tighten the fuel cap carefully, after fueling.
Always move the unit at least 3 m (10 ft.)
from the fueling area before starting.
Before fueling, clean the tank cap area carefully,
to ensure that no dirt falls into the tank. Make sure
that the fuel is well mixed by shaking the container,
before fueling.
Chain oil (Fig. 2-2)
Fill up with chain oil (1). Always use good quality
chain oil. When the engine is running, the chain
oil is automatically discharged.
NOTE!
Add chain oil when its level lowers to one
centimeter from bottom, (Fig. 2-2)
ADJUSTMENT OF CHAIN OIL SUPPLY
The chain oil quantity discharged through the
lubrication system is factory-adjusted to the
standard. Adjust the quantity in accordance with
the operating condition.
The numbered label (4) describes order of
chain oil adjustment. (Fig. 2-3)
Fig.2-1B
Fig.2-4
•
Loosen the fixing screw (2) one turn.
(Fig. 2-3)
•
Turn the adjusting screw (3) clockwise to
decrease the quantity and turn it counter-
clockwise to increase the quantity. (Fig. 2-4)
•
Do not try to turn the screw (3) clockwise
beyond I turn from its most counter-clockwise
position or the maximum quantity discharged
position.
•
After adjustment has been made, tighten
fixing screw (2). (Fig, 2-3)
NOTE!
When you have lost the proper position of the
screw (3), start with the most counterclockwise
position.
Fig.2-2