8
9
(
E
-
b
)
Repeat Step
(
E
-
a
).
(
E
-
c
)
If the balance spring has been adjusted to the tension
,
the
problem still could not be solved
.
Please hang the balance
spring to link pole 2 instead of link pole 1
.
If the problem still exists
,
please change a smaller line diameter
spring and repeat the above steps
.
(F)
Methods to make the boom in the horizontal position
:
(
Attention
:
The clutch device should be locked in these
methods
.)
a
(
Fs
-
afo
)
llIof wb
:
oom is not at the exact horizontal position
,
please try
Adjust screw 2 to diminish
the tension
Fig
.
9
.
1
Shock absorption
rubber
Link pole
Balance crank
Link hole 1
(
F
-
a
-
1
)
Refer to Fig
.
9
-
1
,
fall down the arm
,
and then adjust the
shock absorption screw 2 to make the boom in the horizontal
position
.
If it doesn
'
t work
,
try the next step
.
(
F
-
a
-
2
)
Loosen the locknuts on both sides of the link pole
,
rotate
the link pole right or left to adjust the arm
,
then screw down
the locknuts again when the boom is in the horizontal position
.
(
F
-
b
)
If the boom is vibrant as it falls down to the horizontal
position
.
(
F
-
b
-
1
)
Refer to Fig
.
9
-
1
,
adjust the shock absorption screw B to
diminish the press to the shock absorption rubber B
(
shock
absorption cushion
);
if the adjusting is not satisfied
,
please
try as follow
.
(
F
-
b
-
2
)
Unlock the clutch device
,
and rise up the boom to the
vertical position manually
.
Rotate the adjusting screw for
balance spring to enhance or diminish the tension
.
(
F
-
b
-
3
)
Lock up the clutch device and run the machine
.
If the
problem still exists
,
retry the above steps
.
(G)
The method to lock up unlock the clutch device
.
The clutch can
not be unlocked
.
Insert the clutch key and rotate it clockwise to
unlock it
,
and the anticlockwise to lock it
.
If the clutch device
could not been locked up or unlocked easily
,
please pull up or
pull down the boom by hand lightly
.(
Refer to Fig
.
4
)
Sway up
and down
Link hole 2
Fig
.
9
.
2
Fig
.
8
