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9
English
CAUTION
PROPER TENSION IS EXTREMELY IMPORTANT
8. Raise the bar end and securely tighten the guide
bar clamp nuts with the combi box spanner.
(Fig. 7)
9. A new chain will stretch so adjust the chain after
a few cuts and watch chain tension carefully for
the fi rst half hour of cutting.
NOTE
Check the chain tension frequently for optimum
performance and durability.
CAUTION
○
When the chain is excessively tightened, the bar
and chain will be damaged rapidly. Conversely,
when the chain is excessively loosened, it may
get out of the groove in the bar.
○
Always wear gloves when touching the chain.
WARNING
During operation, hold chain saw fi rmly with
both hands. A single hand operation may cause
serious injury.
OPERATING PROCEDURES
Fuel (Fig. 8)
25-50
1
Fig. 8
WARNING
○
The chain saw 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 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.
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 Authorized Service Centers.
○
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 fi lling half the amount of gasoline,
which is to be used.
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.
Fueling
WARNING (Fig. 9)
○
Always shut off the engine before refueling.
○
Slowly open the fuel tank (15), when fi lling up with
fuel, so that possible overpressure disappears.
○
Tighten the fuel 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, 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.
15
16
Fig. 9
Chain oil (Fig. 9)
Fill up with chain oil (16). Always use good quality
chain oil. When the engine is running, the chain oil
is automatically discharged.
NOTE
When pouring fuel (15) or chain oil (16) into the
tank, place the unit with cap side up. (Fig. 9)
Adjustment of chain oil supply
The chain oil quantity discharged through the
lubrication system is adjusted to the maximum in
the factory. Adjust the quantity in accordance with
the operating condition.
Turn the adjusting screw (17) counterclockwise
to increase the quantity and turn it clockwise to
decrease the quantity. (Fig. 10)