Hitachi CS 51EAP Manual Do Utilizador

9

  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.

  Check the chain tension frequently for optimum 

performance and durability.

○  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.

  During operation, hold chain saw fi rmly  with 

both hands. A single hand operation may cause 

serious injury.

25-50

1

Fig. 8

○ 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.

○  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.

○  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

Fill up with chain oil (16). Always use good quality 

chain oil. When the engine is running, the chain oil 

is automatically discharged.

  When pouring fuel (15) or chain oil (16) into the 

tank, place the unit with cap side up. (Fig. 9)

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)

000Book_CS51EAP_US.indb   9

000Book_CS51EAP_US.indb   9

2012/03/19   16:33:41

2012/03/19   16:33:41