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CAUTION
PROPER TENSION IS EXTREMELY
IMPORTANT
8. Raise the bar end and securely tighten the chain
bar clamp nuts with the combi box spanner.
(Fig. 6)
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. 7)
Fig. 7
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 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 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. 8)
● Always shut off the engine before refueling.
● Slowly open the fuel tank (12), when fi lling
up with fuel, so that possible overpressure
disappears.
● Tighten the fuel cap carefully, after fueling.
● Always move the unit at least 10 ft. (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.
13
12
Fig. 8
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.
9
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