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 first 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 firmly with both hands. A single hand operation may cause serious injury.

OPERATING PROCEDURES

Fuel (Fig. 8)

1 25-50

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 flammable 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.

English

○ 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 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 filling the fuel tank.

Fueling

WARNING (Fig. 9)

○ Always shut off the engine before refueling.

○ Slowly open the fuel tank (15), 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 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)

9