Maintenance - Hitachi CG 24EBD Series Handling Instructions Manual

Starting
CAUTION
Before starting, make sure the cutting attachment does not
touch anything.
1. Set ignition switch (20) to forward away from stop position.
(Fig. 16)
* Push priming bulb (21) about ten times so that fuel fl ows into
carburetor. (Fig. 17)
2. Set choke lever (23) to START position (closed) (A). (Fig. 18)
3. Pull recoil starter briskly, taking care to keep the handle in your
grasp and not allowing it to snap back. (Fig. 19)
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 4.
5. Then allow the engine about 2–3 minutes to warm up before
subjecting it to any load.
6. Check that the cutting attachment does not rotate when the
engine is idling.
Cutting (Fig. 20-23)
○ When cutting, operate engine at over 6500 /min. Extended time
of use at low rpm may wear out the clutch prematurely.
○ Cut grass from right to left.
○ Wear the harness as shown in the fi gure (if so equipped).
The cutting attachment turns ounter-clockwise, therefore, be
advised to operate the unit from right to left for effi cient cutting.
Keep onlookers out of working area at least 15 m.
○ Use in accordance with local laws and regulations.
NOTE
Press the quick release button or pull emergency release fl ap
(If so equipped) in the event of emergency. (Fig. 22)
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. 24)
Decrease engine speed and run at an idle for a few minutes, then
turn off ignition switch (20).
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 /min. Extended time
of use at low rpm may wear out the clutch prematurely.
○ Cut grass from right to left.
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 /min).

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. 25)
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.
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 Authorized Service Centers.
NOTE
Standard Idle rpm is 2800 - 3200 /min.
WARNING
When the engine is idling the cutting attachment must under no
circumstances rotate.
Air fi lter (Fig. 26)
The air fi lter must be cleaned from dust and dirt in order to avoid:
○ Carburetor malfunctions
○ Starting problems
○ Engine power reduction
○ Unnecessary wear on the engine parts
○ Abnormal fuel consumption
Clean the air fi lter daily or more often if working in exceptionally
dusty areas.
Cleaning the air fi lter
Open the air fi lter cover and the fi lter (25). Rinse it in warm soap
suds. Check that the fi lter is dry before reassembly. An air fi lter
that has been used for some time cannot be cleaned completely.
Therefore, it must regularly be replaced with a new one. A damaged
fi lter must always be replaced.
Fuel fi lter (Fig. 27)
Drain all fuel from fuel tank and pull fuel fi lter line from tank. Pull
fi lter element out of holder assembly and rinse element in warm
water with detergent.
Rinse thoroughly until all traces of detergent are eliminated.
Squeeze, do not wring, away excess water and allow element to air
dry.
NOTE
If element is hard due to excessive dirt buildup, replace it.
English
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