30
31
TROUBLE SHOOTING
SYMPTOM
POSSIBLE
CAUSE
Chain saw fails to operate
No power
Mains socket faulty
Extension cord damaged
Check power
Use another socket
Check cord, replace
Chain saw operates
intermittently
Extension cord damaged
L
oose connection
Internal wiring defective
On/Off defective
Check cord, replace
Contact service agent
Contact service agent
Contact service agent
Dry chain
No oil in reservoir
Oil passage clogged
Clean cap
Clean oil passage outlet
Chain/chain bar overheats
No oil in reservoir
Oil passage clogged
Chain is over tensioned
Dull chain
Clean cap
Clean oil passage outlet
Adjust locking knob
Sharpen chain or replace
Chain saw rips, vibrates,
does not saw properly
Chain tension too loose
Dull chain
Chain worn out
Chain teeth are facing in the
wrong direction
Adjust locking knob
Sharpen chain or replace
Replace chain
Reassemble with chain in
correct direction
Vent in oil filler cap clogged
Refill oil
Refill oil
Vent in oil filler cap clogged
The following table gives checks and actions that you can perform if your machine does not
operate correctly. If these do not identify/remedy the problem, contact your service agent.
WARNING:
Switch off and remove plug from mains before investigating fault.
PARTS LIST
The model n
umber will be f
ound on the nameplate of the P
ole Sa
w/Chain Sa
w.
Alw
ays mention the model n
umber when requesting par
ts and ser
vice
for y
our tool.
T
o order par
ts
, call 1-800-469-4663
Model No. 172.439831 10-In. Bar
9 Amp
Motor
Electric
Adjustab
le P
ole
Sa
w/Chain
S
aw
P
ar
ts No.
P
ar
t Description
Qt
y.
P
osition No.
GCS250U-1
GCS250U-2
GCS250U-3
GCS250U-5
GCS250U-6
GCS250U-7
GCS250U-8
GCS250U-9
GCS250U-11
GCS250U-12
GCS250U-15
GCS250U-16
GCS250U-20
GCS250U-22
GCS250U-23
GCS250U-24
GCS250U-26
GCS250U-28
GCS250U-29
GCS250U-30
GCS250U-31
GCS250U-32
GCS250U-33
GCS250U-34
GCS250U-35
GCS250U-36
GCS250U
.1-37
1
2
3
5
6
7
8
9
11
12
15
16
20
22
23
24
26
28
29
30
31
32
33
34
35
36
37
Protect Plate Self tapping screw Motor Cover Torsional Spring Carbon Brush (pair) Rear bracket Stator Left/Right housing Bearing Rotor Oil Exit Front bracket Tighten Bolt Pinion W
asher
Retaining Ring Oil Bottle Cap Duck Bill Oil Bottle Big Gear Bearing W
asher
Bar Spacer Self T
apping
Screw
E-ring Self T
apping
Screw
Guide Bar
1
16
1
2
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
2
1
1
3
1
1
1
P
ar
ts No.
P
ar
t Description
Qt
y.
P
osition No.
39
40
42
43
44
45
46
47
48
49
50
51
52
53
54
56
57
58
59
60
61
62
65
66
67
69
70
Press Block Saw Chain Bush Cam self tapping screw Flange Chain Guard Compression Spring Tension Wheel Bolt Knob Body Inner Wire Inner Wire Micro Piece Cord & Plug Blade Sheath Switch Bearing Sleeve Screw and washer assembly Self T
apping
Screw
W
asher
Bearing Spring Wire Telescope
Tube
I
Left/Right Pole Handle Thread Sleeve Screw
1
1
1
1
2
1
1
1
1
1
1
1
1
2
1
1
1
1
2
2
1
1
1
1
1
1
1
GCS250U-39
GCS250U
.1-40
GCS250U-42
GCS250U-43
GCS250U-44
GCS250U-45
GCS250U-46
GCS250U-47
GCS250U-48
GCS250U-49
GCS250U-50
GCS250U-51
GCS250U-52
GCS250U-53
GCS250U-54
GCS250U-56
GCS250U-57
GCS250U-58
GCS250U-59
GCS250U-60
GCS250U-61
GCS250U-62
GCS250U-65
GCS250U-66
GCS250U-67
GCS250U-69
GCS250U-70
