Assembly Procedures; Operating Procedures; Maintenance - Hitachi CH 50EA Instrucciones De Manejo

English

ASSEMBLY PROCEDURES

Handle B (3) and Gathering plate (4) (Fig. 1)
1. Remove the four washers and nuts (1) from cutting blade end.
NOTE
In case of Handle B installation only, remove only the nut on the
longest bolt.
2. Set the gathering plate on the cutter guide, then fi nger tighten
the three washers and nuts.
* Use one each (5) of the two washers, which have been
provided, under the gathering plate or on the two blade-fi xing
bolts from the cutting-blade end to install the gathering plate
on CH105EC (C). (If so equipped)
3. Set the handle B on the longest bolt and fi nger tighten with the
washer and nut.
4. Before securing the fi nger-tightened nuts, screw the blade fi xing
bolts (2) to be seated, then loosen the bolts approx. 1/2 turn.
5. With the bolts set at that position tighten the blade fi xing nuts.

OPERATING PROCEDURES

Fuel (Fig. 2)
WARNING
The hedge trimmer is equipped with a two- stroke engine.
Always run the engine on fuel, mixed with oil.
Provide good ventilation, when fueling or handling fuel.
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 (10W/30) or waste oil.
○ Always mix fuel and oil in a separate clean container.
Always start by fi lling 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 fi lling the fuel tank.
Fueling
WARNING (Fig. 3)
○ Always shut off the engine before refueling.
○ Slowly open the fuel tank (6), when fi lling up with fuel, so that
possible over-pressure disappears.
○ Tighten the fuel cap carefully, after fueling.
○ Always move the unit at least 3 m from the fueling area before
starting.
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 (7) to ON position (A). (Fig. 4, 5)
* Push priming bulb (10) several times so that fuel fl ows through
the bulb or return pipe. (If so equipped) (Fig. 6)
2. With the safety lever (8) pressed, pull throttle trigger and push
lock button (9) (If so equipped), then slowly release throttle the
trigger fi rst, then the safety lever. This will lock the throttle in
starting position. (Fig. 4, 5)
3. Set choke lever (11) to CLOSED position (B). (Fig. 7)
10
4. Pull recoil starter briskly, taking care to keep the handle in your
grasp and not allowing it to snap back. (Fig. 8, 9)
5. When you hear the engine attempts to start, return choke lever
to RUN position (open) (C). Then pull recoil starter briskly
again.
NOTE
If engine does not start, repeat procedures from 2 to 4.
6. After starting engine, allow the engine about 2-3 minutes to
warm up before subjecting it to any load.
Cutting
When cutting, operate engine at full throttle as this maintains proper
cutter speed. When trimming top of hedge, hold trimmer so blades
are between 15 and 30 degrees from a horizontal position and
swing trimmer in an arc toward edge of hedge to sweep cuttings off .
When trimming sides of hedge, hold blade vertically and swing unit
in an arc.
NOTE
○ Multi-position twist handle (Fig. 10)
In case your trimmer is twist handle type (12), please note that
the cutting angle can be adjusted by loosening handle locking
nut (13). After adjustment has been made, be sure to retighten
the nut.
○ Five positioning twist handle (Fig. 11)
The rear handle can be set in fi ve diff erent positions by pushing
the lock button (14) and turning the rear handle (15).
It is extremely important that the handle is locked in the selected
position.
The lock button can not work while the throttle trigger is being
pulled.
○ The throttle trigger will not work if the rear handle is unlocked.
Stopping (Fig. 12, 13)
Decrease engine speed, and push ignition switch to stop position
(F).

MAINTENANCE

MAINTENANCE, REPLACEMENT OR REPAIR OF THE EMISSION
CONTROL DEVICES AND SYSTEM MAY BE PERFORMED
BY ANY NONROAD ENGINE REPAIR ESTABLISHMENT OR
INDIVIDUAL.
Carburetor adjustment (Fig. 14)
WARNING
○ The cutting attachment may be spinning during carburetor
adjustments.
○ Never start the engine without the complete clutch cover.
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 adjusted. A further adjustment may
be required, according to climate and altitude. The carburetor has
one adjustment possibility:
T = Idle speed adjustment screw.
Idle speed adjustment (T)
Check that the air fi lter is clean. When the idle speed is correct, the
cutting attachment will not rotate. If adjustment is required, close
(clockwise) the T-screw, with the engine running, until the cutting
attachment starts to rotate. Open (counter-clockwise) the screw
until the cutting attachment stops. You have reached the correct idle
speed when the engine runs smoothly in all positions well below the
rpm when the cutting attachment starts to rotate.
If the cutting attachment still rotates after idle speed adjustment,
contact Hitachi dealer.