Maintenance - Hitachi CG 40EAF Handling Instructions Manual

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. Slide ignition switch (18) to RUN position. (Fig. 17)
* Push priming bulb (19) several times so that fuel fl ows through
return pipe. (Fig. 18)
2. Set choke lever (20) to START position (A). (Fig. 19)
3. Pull recoil starter briskly, taking care to keep the handle in your
grasp and not allowing it to snap back. (Fig. 20)
4. When you hear the engine want to start, return choke lever to
RUN position (B). Then pull recoil starter briskly again.
NOTE
If engine does not start, repeat procedures from 2 to 4.
5. After starting engine, allow the engine about 2–3 minutes to
warm up before subjecting it to any load.
Cutting (Fig. 21, 22)
When cutting, operate engine at over 6500 min
✂
time of use at low rpm may wear out the clutch prematurely.
Cut grass from right to left.
✂
When working on a slope, the blade should allow the contour
✂
from top to bottom, with the operator looking down to the left.
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 di
be cut.
The blade turns counter-clockwise, therefore, be advised to
✂
operate the unit from right to left for e
onlookers out of working area at least 15 m.
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. 23)
Decrease engine speed and run at an idle for a few minutes, then
turn o ignition switch (18).
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 o , make sure the cutting attachment has stopped
before the unit is set down.
How to use nylon head
When cutting, operate engine at over 6500 min
low rpm may wear out the clutch prematurely.
This product is designed so that it will stop cutting when the nylon
line becomes 16 cm or longer.
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 o , make sure the cutting attachment has stopped before
the unit is set down.
Set the engine speed as low as possible and tap the Head on the
ground. (Fig. 24) Also, you can extend nylon line with hands but the
engine must be completely stopped. (Fig. 25)
Adjust nylon line to proper length 11-14 cm before each operation.

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. 26)
✂
✂
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
-1 . Extended
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 your Hitachi dealer.
NOTE
cult to see the material to
✁
cient cutting. Keep
✁
Air fi lter (Fig. 27)
The air fi lter must be cleaned from dust and dirt in order to avoid:
✂
✂
✂
✂
✂
Clean the air fi lter daily or more often if working in exceptionally
dusty areas.
Cleaning the air fi lter
Remove the air fi lter cover and the fi lter (21). 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. 28)
-1 . Extended use at
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
Spark plug (Fig. 29)
The spark plug condition is infl uenced by:
✂
✂
✂
✂
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.
Standard Idle rpm is 2500–3000 min
WARNING
When the engine is idling the cutting attachment must under no
circumstances rotate.
Carburetor malfunctions
Starting problems
Engine power reduction
Unnecessary wear on the engine parts
Abnormal fuel consumption
If element is hard due to excessive dirt buildup, replace it.
An incorrect carburetor setting
Wrong fuel mixture (too much oil in the gasoline)
A dirty air fi lter
Hard running conditions (such as cold weather)
English
-1
.
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