Hitachi CH 50EA3 (ST)/CH 55EB3 (ST) manual Maintenance, Cutting, Multi-position twist handle Fig

Models: CH 78EC3 (ST) CH 62EA3 (ST)/CH 66EB3 (ST) CH 50EA3 (ST)/CH 55EB3 (ST)

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Cutting

Fig. 6

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. 7)

The rear control handle turns 90 degrees to provide comfortable use while accommodating a variety of cutting angles. The handle allows for five different locking positions. Before attempting to adjust rear handle, make sure the machine is at idle or engine is shut off.

○ The machine will automatically shut off if the throttle lever is pressed while the handle is NOT secured in one of the five preset positions. Never attempt to operate the machine unless the rear handle is properly locked in place.

To rotate the handle; push the lock lever (6) allowing the handle to turn. Press the lock lever (6) to release the lock and allow the handle to turn. Rotate the handle to the desired 0°, 45° or 90° locking position and press the release lever (7) to lock the handle in place.

D: LOCK

E: UNLOCK

6

E D

 

 

7

 

 

Fig. 7

Stopping (Fig. 8)

Decrease engine speed, and push ignition switch to stop position

(F).

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F○ Multi-position twist handle (Fig. 7)

Fig. 8

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. 9)

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 filter 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.

T

Fig. 9

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2009/12/21 17:35:38

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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Hitachi CH 50EA3 (ST)/CH 55EB3 (ST), CH 78EC3 (ST) Maintenance, Cutting, Multi-position twist handle Fig, Stopping Fig