English

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. 20)

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.

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.

○ 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 filing half the amount of fuel, which is to be used. Then add the whole amount of oil. Mix (shake) the fuel mixture. Add the remaining amount of fuel.

Mix (shake) the fuel-mix thoroughly before filling the fuel tank.

Fueling

WARNING

○ Always shut off the engine before refueling.

○ Slowly open the fuel tank, when filling up with fuel, so that possible over-pressure disappears.

○ Tighten the fuel cap carefully, after fueling.

○ Always move the trimmer at least 3 m from the fueling area before starting.

○ Always wash any spilled fuel from clothing immediately with soap.

○ Be sure to check for any fuel leakage 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.

Starting

CAUTION

Before starting, make sure the cutting attachment does not touch anything.

1. Set ignition switch (24) to ON position. (Fig. 21, 22)

* Push priming bulb (25) several times so that fuel flows through return pipe (39). (Fig. 23)

2. Set choke lever (27) to CLOSED position (A). (Fig. 24)

3. Pull recoil starter briskly, taking care to keep the handle in your grasp and not allowing it to snap back. (Fig. 25)

4. When you hear the engine want to start, return choke lever to RUN position (open) (B). Then pull recoil starter briskly again.

NOTE

If engine does not start, repeat procedures from 2 to 5.

5.Then allow the engine about 2–3 minutes to warm up before subjecting it to any load.

Cutting (Fig. 26, 27, 28)

○ When cutting, operate engine at over 6500 rpm. Extended time of use at low rpm may wear out the clutch prematurely.

○ Cut grass from right to left.

○ Cut grass from left to right (only curve shaft model).

○ Blade thrust may occur when the spinning blade contacts a solid object in the critical area.

A dangerous reaction may occur causing the entire unit and operator to be thrust violently. This reaction is called blade thrust. As a result, the operator may lose control of the unit which may cause serious or fatal injury. Blade thrust is more likely to occur in areas where it is difficult to see the material to be cut.

○ Wear the harness as shown in the figure (if so equipped). The blade turns counter-clockwise, therefore, be advised to operate the unit from right to left for efficient cutting. Keep onlookers out of working area at least 15 m.

NOTE

Press the quick release button or pull emergency release flap (If so equipped) in the event of emergency. (Fig. 27-1)

WARNING

If cutting attachment should strike against stones or other debris, stop the engine and make sure that the attachment and related parts are undamaged. When grass or vines wrap around attachment, stop engine and attachment and remove them.

Stopping (Fig. 29, 30)

Decrease engine speed and run at an idle for a few minutes, then turn off ignition switch (24).

For models with an engine ignition switch, keep the ignition switch pressed until the engine comes to a complete stop.

WARNING

A cutting attachment can injure while it continues to spin after the engine is stopped or power control is released. When the unit is turned off, make sure the cutting attachment has stopped before the unit is set down.

Semi-auto cutting head

○ When cutting, operate engine at over 6500 rpm. Extended time of use at low rpm may wear out the clutch prematurely.

○ Cut grass from right to left.

○ Cut grass from left to right (only curve shaft model).

WARNING

A cutting attachment can injure while it continues to spin after the engine is stopped or power control is released. When the unit is turned off, make sure the cutting attachment has stopped before the unit is set down.

Automatically feeds more nylon cutting line when it is tapped at low rpm (not greater than 4500 rpm).

MAINTENANCE

MAINTENANCE, REPLACEMENT OR REPAIR OF THE EMISSION CONTROL DEVICES AND SYSTEMS MAY BE PERFORMED BY ANY NON-ROAD ENGINE REPAIR ESTABLISHMENT OR INDIVIDUAL.

Carburetor adjustment (Fig. 31)

WARNING

○ The cutting attachment may be spinning during carburetor adjustments.

○ Never start the engine without the complete clutch cover and tube assembled! Otherwise the clutch can come loose and cause personal injuries.

In the carburetor, fuel is mixed with air. When the engine is test run at the factory, the carburetor is basically adjusted. A further adjustment may be required, according to climate and altitude. The carburetor has one adjustment possibility:

T = Idle speed adjustment screw.

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