○ For outstanding performance and reliability, always use Hitachi nylon cutting line. Never use wire or other materials that could become a dangerous projectile.

○ If the cutting head does not feed cutting line properly, check that the nylon line and all components are properly installed. Contact your Hitachi dealer if you need assistance.

3. Installation (Fig. 14)

○ Install cutting head on gear case of grass trimmers/brush cutters. The mounting nut is left-hand-threaded. Turn clockwise to loosen/counterclockwise to tighten.

19

Installation of cutting blade (Fig. 17) (If so equipped)

When installing a cutting blade, make sure that there are no cracks or any damage in it and that the cutting edges are facing the correct direction.

19

21

20

22

23

Fig. 14

For curved shaft models, the mounting nut is right-hand-threaded. Turn counterclockwise to loosen/clockwise to tighten.

NOTE

○ Since the cutter holder cap is not used here, keep it for when a metal blade is used, if so equipped.

○ Insert Allen wrench (19) into the hole of the gear case in order to lock the cutter holder.

4. Adjusting line length

○ Set the engine speed as low as possible and tap the head on the ground. The nylon line will be drawn out about 3 cm with each tap. (Fig. 15)

Fig. 15

Also, you can extend the nylon line by hand but the engine must be completely stopped. (Fig. 16)

Fig. 16

○Adjust the nylon line to the proper length of 11–14 cm before each operation.

8

Fig. 17

NOTE

○ When installing cutter holder cap (20), be sure to set concave side upward.

○ Insert the alien wrench (19) into the hole of the angle transmission in order to lock the cutter holder (21). Please note that the cutter fixing bolt or nut (22) has left-handed threads, (clockwise to loosen/ counter-clockwise to tighten). Tighten the fixing bolt or nut with the box wrench.

○ If your unit is of a nut securing type and equipped with a cotter pin, the blade must be retained with a new pin (23) each time installed. (Fig. 18)

23

Fig. 18

CAUTION

○ Before operation, make sure the blade has been properly installed.

○ If your unit is equipped with protection cover under a cutting blade, check it for wear or cracks before operation. If any damage or wear is found, replace it, as it is an article of consumption.

WARNING

For Hitachi heads, use only flexible, non-metallic line recommended by the manufacturer. Never use wire or wire ropes. They can break off and become a dangerous projectile.

OPERATING PROCEDURES

Fuel (Fig. 19)

WARNING

○ The trimmer 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.