T1251-93120 (211)
BRUSHCUTTERS
BK3501FL
BK4501FL
BK5301DL
NOTE :
1. Use KOMATSU ZENOAH genuine parts as specified in the parts list for repair and/or replacement.
2. KOMATSU ZENOAH does not warrant the machines, which have been damaged by the use of any
parts other than those specified by the company.
3. When placing parts orders for repair and/or replacement, check if the model name and the serial
number are applicable to those specified in the parts list, then use parts number described in the
parts list.
4. The contents described in the parts list are accurate as of the date and may change due to
improvement.
5. The parts for the machine shall be supplied ten (10) years after the machine is discontinued. [It is
possible that some specific parts may be subject to change of their delivery term and list price
within the limit of ten (10) years after the machine is discontinued. It is also possible that some
parts may be available even after the limit of ten (10) years.]
APPLICABLE SERIAL NUMBERS:
200101 and up
November 2002
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BK3501FL/BK4501FL/BK5301DL
Fig.1 CUTTER GROUP
Q'TY
/UNIT
Q'TY
/UNIT
Key# PART NUMBER
DESCRIPTION
NOTE
Key# PART NUMBER
DESCRIPTION
NOTE
M5
1
2
T3217-12100 PIPE-COMP ø26xL1500(t1.5)
3180-11321 • BUSHING
6129-12120 • BEARING-COMP
6129-12210 SHAFT ø7x1468
6129-12220 SHAFT, JOINT
6129-12230 CLAMP
1
6
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
4
1
1
1
1
1
1
1
1
1
1
1
1
1
1
4
1
1
1
1
1
1
1
1
4
65
66
67
68
69
70
71
01601-20513 • WASHER
T1141-35100 FRAME COMP
4
1
1
1
1
3
6
3
6129-51201 PLATE, ENGINE COMP
0224-30625 BOLT
4
M6x25
M6
5
0280-10605 NUT
6
6129-51310 JOINT
7
0263-10510 SCREW
1610-13120 NUT
M5xP0.8
BK3501FL
BK4501FL
BK5301DL
8
01252-30520 BOLT
72
4551-13311 BRACKET, ENGINE
1
9
6522-13000 GEARCASE ASS'Y
6522-13110 • GEARCASE
06000-06000 • BEARING
06000-06202 • BEARING
3130-13141 • SEAL
73
74
75
76
77
78
79
80
81
82
83
84
6129-51410 BRACKET, ENGINE
01641-21423 WASHER
04064-01510 SNAP RING
3310-31720 BOLT
1
2
1
4
1
1
1
1
1
1
2
1
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
M5x14
T3113-91000 TOOL-SET
1030-91340 • DRIVER
3144-91160 • SOCKET
09007-00425 • WRENCH
09007-00528 • WRENCH
3540-91110 • BAR
04065-03515 • RING,SNAP
01252-30510 • BOLT
M5x10
M10(L)
3540-13212 • SHAFT
3540-13220 • GEAR
3544-13280 • WASHER
01643-31032 • WASHER
3540-13290 • BOLT M10xP1.25x28(L)
6522-13310 • PINION
6044-21160 CLAMP
T1251-93110 MANUAL
06001-06000 • BEARING
3180-13330 • RING
04065-02612 • RING
3540-13260 • BOLT
M6x35
M6x10
0224-40610 • BOLT
6251-13240 • HOLDER(A)
3540-13251 • HOLDER(B)
6178-12400 GRIP ASS'Y
6464-12230 • LEVER, throttle
6464-12240 • LEVER
1638-84150 • STOPPER
1638-84160 • CLAMP
6464-12250 • CLAMP
6178-12230 • CABLE-A
1638-84170 • SPRING
1638-84180 • SPRING
0263-60620 • SCREW
M6x20
1638-84190 • NUT
M6xP1.0
TP4xL18
1638-84220 • SCREW, tapping
6178-12530 • JOINT
6129-21000 SHAFT, FLEX-ASSY
6129-21110 • SHAFT-FLEX ø7.8xL845
6129-21120 • LINER ø22.5xL840
07000-12018 • O-RING ø17.8xø2.4
T3223-12510 PLATE NAME
T3224-12510 PLATE NAME
T3225-12510 PLATE NAME
T1141-37100 BACK CUSHION
6425-12552 PLATE
BK3501DL
BK4501FL
BK5301FL
3540-13283 COVER
6251-15910 COVER
T3112-14000 HANDLE ASS'Y
T3112-14110 • HANDLE
0263-90530 • SCREW
6298-E3390 SAW
6489-24000 GUARD-ASS'Y
6489-24110 • GUARD
6489-24200 • PLATE-COMP
6489-24210 • • PLATE
6489-24220 • • BLADE
0277-10412 • • SCREW, tapping
6489-24120 • PLATE
TP4x12
M5x16
01252-30516 • BOLT
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BK3501FL
Fig.2 ENGINE GROUP
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BK3501FL
Fig.2 ENGINE GROUP
Q'TY
/UNIT
Q'TY
NOTE
/UNIT
Key# PART NUMBER
DESCRIPTION
NOTE
Key# PART NUMBER
DESCRIPTION
1
2
3
4
5
6
7
8
9
T1151-12110 CYLINDER
1850-12130 BOLT
4500-13120 GASKET, base
4500-21101 CRANKCASE COMP.
2629-21130 • PIN
1
4
1
1
3
1
1
1
2
1
1
4
1
1
2
1
2
1
2
1
2
1
2
2
2
1
1
1
1
2
1
1
1
1
2
1
1
1
1
1
1
1
1
4
1
2
1
1
1
1
1
1
4
1
1
1
1
1
1
1
1
1
1
1
1
1
1
4
69
70
71
72
73
74
75
4700-75310 COLLAR
4550-13160 INSULATOR
4500-13150 GASKET, insulator
4550-13130 GASKET, carburetor
T1151-81001 CARBURETOR ASS'Y
1650-81122 • CAP, BODY
1
1
1
1
M5x22
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
2
2
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
G11P-1S
4500-22110 GARD
0263-90514 SCREW
4500-21140 GASKET, case
06030-06201 BEARING
4810-21210 SEAL
1650-21220 OIL SEAL
01252-30530 BOLT
04065-03212 SNAP RING
4700-41110 PISTON
1650-41210 RING
M5x14
M5x30
T1151-81150 • VALVE, THROTTLE
76 1030-81000-14 • SPRING, THROTTLE
77 1030-81000-17 • SPRING RECEIVE
78
79 1030-81000-16 • CLIP
80
81
82
83
84
85
86
87
88
89
90
91
92
93
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
T1151-81210 • NEEDLE, JET
1400-81230 • JET, NEEDLE
T1151-81240 • JET, MAIN
1335-81180 • FLOAT
1400-81340 • HINGE
1400-81350 • PIN
NJ ø2.097
#59
1030-41310 PIN
1300-41320 RING
1650-81361 • VALVE
T2100-41410 BEARING
2850-41510 WASHER
4500-42000 CRANKSHAFT COMP.
1400-51111 SHOE, clutch
1651-51220 SPRING
1200-51211 SCREW
1200-51230 WASHER
1200-51241 WASHER
T1153-71110 ROTOR
T1153-71200 COIL ASS'Y
4500-71220 • CORD
1650-81251 • SCREW, ADJUST
1650-81260 • SPRING, ADJUST
1403-81500 • COCK
1400-81540 • RING
0260-10410 • SCREW
1400-81320 • PACKING
1400-81310 • CHAMBER
1400-81650 • SCREW, DRAIN
1400-81660 • PACKING
1141-81120 • CAP
1650-81710 • PIPE
0260-10412 • SCREW
0263-90565 SCREW
1400-82002 CLEANER ASS'Y
1400-82113 • BODY
1400-82121 • COVER
1418-82130 • ELEMENT
1400-82141 • SCREEN
4550-82150 SCREW
94
95
96
97
98
99
2616-71320 • CAP
T1153-71250 • PIN
M4x16
M4x25
5500-72130 • GROMMET
5500-72110 • CAP, plug
5500-72120 • SPRING
T1512-71320 • TUBE
3350-14150 BOLT
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
M4x20
M8xP1.0
1650-43230 NUT
1000-43240 KEY
1133-82060 LABEL
T1173-31100 HOUSING ASS'Y
06002-06001 • BEARING
04065-02812 • RING
T3087-12600 • STOPPER COMP
6278-12311 • DRUM
04064-01210 • SNAP RING
3310-12281 SCREW
T1024-15110 MUFFLER
01252-30560 BOLT
3310-31720 BOLT
4700-15211 GASKET
4500-15221 PLATE
0263-90514 SCREW
4500-31210 PLATE
4550-32110 COVER
T1055-85000 TANK ASS'Y
2133-85302 • CAP ASS'Y
4570-85230 • • CAP INNER
1030-85141 • • ELEMENT
4500-85220 • • PACKING
3317-57242 • • STOPPER
4551-85101 • JOINT ASS'Y
1400-85141 • • GROMMET
3063-22510 • • CLIP
4551-86111 • • PIPE
3570-15311 • SPRING
3063-22510 • CLIP
1535-85520 BAND
2193-86150 CLAMP
M5x20
M5x60
M5x14
1660-31121 LABEL COVER
T1072-75410 LABEL RECOIL
2634-31420 LABEL
4500-32120 SCREW
4500-32210 GUARD
M5x12
5933-73110 SPARKPLUG NGK BPMR7A
1852-72121 GROMMET
T1183-73200 CORD COMP
4500-75100 RECOIL ASS'Y
4500-75120 • REEL
4500-75150 • SCREW
1850-75130 • SPRING, spiral
4500-75180 • COLLAR
4500-75190 • ARM
4500-75160 • ROPE
1140-75320 • KNOB
5500-75170 • PLATE, stopper
4500-75210 PULLEY
4500-75511 SCREW
T1062-83100 CABLE-C
M6x14
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BK4501FL
Fig.3 ENGINE GROUP
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BK4501FL
Fig.3 ENGINE GROUP
Q'TY
/UNIT
Q'TY
NOTE
/UNIT
Key# PART NUMBER
DESCRIPTION
NOTE
Key# PART NUMBER
DESCRIPTION
1
2
3
4
5
6
7
8
9
4500-12110 CYLINDER
1850-12130 BOLT
4500-13120 GASKET, base
4500-21101 CRANKCASE COMP.
2629-21130 • PIN
1
4
1
1
3
1
1
1
2
1
1
4
1
1
2
1
2
1
2
1
2
1
2
2
2
1
1
1
1
2
1
1
1
1
2
1
1
1
1
1
1
1
1
4
1
2
1
1
1
1
1
1
4
1
1
1
1
1
1
1
1
1
1
1
1
1
1
4
69
70
71
72
73
74
75
76
4700-75310 COLLOR
4550-13160 INSULATOR
4500-13150 GASKET, insulator
4550-13130 GASKET, carburetor
T1162-81000 CARBURETOR ASS'Y
1335-81060 • SPRING
1
1
1
1
M5x22
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
2
1
1
1
1
1
1
2
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
G12P-1A
4500-22110 GARD
0263-90514 SCREW
4500-21140 GASKET, case
06030-06201 BEARING
4810-21210 SEAL
1650-21220 OIL SEAL
01252-30530 BOLT
04065-03212 SNAP RING
4500-41110 PISTON
1400-41220 RING
M5x14
M5x30
4550-81150 • VALVE, THROTTLE
4550-81210 • NEEDLE, JET
77 1030-81000-16 • CLIP
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
T1012-81070 • RECEIVE
1620-81230 • JET, NEEDLE
1620-81240 • JET, MAIN
1335-81180 • FLOAT
1400-81310 • CHAMBER
1400-81320 • PACKING
0260-10412 • SCREW
1650-81121 • CAP, BODY
1141-81120 • CAP
#67
2850-41310 PIN
1300-41320 RING
M4x16
T2100-41410 BEARING
2850-41510 WASHER
4500-42000 CRANKSHAFT COMP.
4500-51111 SHOE, clutch
4500-51220 SPRING
1200-51211 SCREW
1200-51230 WASHER
1200-51241 WASHER
T1153-71110 ROTOR
T1162-71200 COIL ASS'Y
4500-71220 • CORD
1400-81361 • VALVE,NEEDLE
1400-81540 • O-RING
1400-81340 • HINGE
1400-81350 • PIN
0260-10410 • SCREW
1403-81500 • COCK ASS'Y
1650-81260 • SPRING
2751-81250 • SCREW,ADJUSTER
4550-81710 • PIPE
1400-81650 • SCREW,DRAIN
1400-81660 • PACKING
0263-90565 SCREW
1400-82002 CLEANER ASS'Y
1400-82113 • BODY
1400-82121 • COVER
1418-82130 • ELEMENT
1400-82141 • SCREEN
4550-82150 SCREW
M3x6
94
95
96
97
98
99
2616-71320 • CAP
T1153-71250 • PIN
M5x60
M4x25
5500-72130 • GROMMET
5500-72110 • CAP, plug
5500-72120 • SPRING
T1512-71320 • TUBE
3350-14150 BOLT
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
M4x20
M8xP1.0
1650-43230 NUT
1000-43240 KEY
1133-82060 LABEL
T1173-31100 HOUSING ASS'Y
06002-06001 • BEARING
04065-02812 • RING
T3087-12600 • STOPPER COMP
6278-12311 • DRUM
04064-01210 • SNAP RING
3310-12281 SCREW
4550-15110 MUFFLER
01252-30565 BOLT
3310-31720 BOLT
4700-15211 GASKET
4500-15221 PLATE
0263-90514 SCREW
4500-31210 PLATE
4550-32110 COVER
4500-32120 SCREW
4500-32210 GUARD
5933-73110 SPARKPLUG NGK BPMR7A
1852-72121 GROMMET
T1183-73200 CORD COMP
4500-75100 RECOIL ASS'Y
4500-75120 • REEL
4500-75150 • SCREW
1850-75130 • SPRING, spiral
4500-75180 • COLLAR
4500-75190 • ARM
4500-75160 • ROPE
1140-75320 • KNOB
5500-75170 • PLATE, stopper
4500-75210 PULLEY
4500-75511 SCREW
T1055-85000 TANK ASS'Y
2133-85302 • CAP ASS'Y
4570-85230 • • CAP INNER
1030-85141 • • ELEMENT
4500-85220 • • PACKING
3317-57242 • • STOPPER
4551-85101 • JOINT ASS'Y
1400-85141 • • GROMMET
3063-22510 • • CLIP
4551-86111 • • PIPE
3570-15311 • SPRING
3063-22510 • CLIP
1535-85520 BAND
2193-86150 CLAMP
M5x20
M5x65
M5x14
1660-31121 LABEL COVER
T1117-75411 LABEL RECOIL
2634-31420 LABEL
M5x12
T1062-83100 CABLE-C
M6x14
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BK5301DL
Fig.4 ENGINE GROUP
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BK5301DL
Fig.4 ENGINE GROUP
Q'TY
/UNIT
Q'TY
NOTE
/UNIT
Key# PART NUMBER
DESCRIPTION
NOTE
Key# PART NUMBER
DESCRIPTION
1
2
3
4
5
6
7
8
9
1580-12101 CYLINDER COMP
1580-12150 • STUD
1850-12130 BOLT
1
2
4
2
2
1
1
1
1
1
1
3
1
2
1
1
1
4
1
2
1
2
1
2
1
2
1
1
2
1
2
1
2
2
2
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
4
1
4
2
2
1
1
4
1
1
2
1
1
1
1
1
1
1
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
1487-75101 RECOIL ASS'Y
1180-75221 • SPRING
1487-75120 • REEL
1
1
1
1
1
1
1
1
1
1
1
M5x22
M5x40
M5x60
0260-30540 SCREW
0260-30560 SCREW
1400-13122 GASKET, base
1460-13131 GASKET, cab
1580-13141 GASKET, muffler
1400-13151 GASKET, insulator
1460-13163 INSULATOR
1400-21100 CRANKCASE COMP
2629-21130 • PIN
1400-21141 GASKET, case
06030-06202 BEARING
1520-21220 SEAL
1400-21220 SEAL
04065-03515 SNAP RING
01252-30530 BOLT
1487-75140 • DOG
1861-75150 • WASHER
1483-75270 • SCREW
1487-75160 • RETAINER
1487-75170 • WASHER
1400-75160 • ROPE
1400-75170 • KNOB
1487-75211 PULLEY
0263-90520 SCREW
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
4
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
4
1
1
1
1
1
2
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
M5x20
WYK-36A
1587-81003 CARBURETOR ASS'Y
1850-81450 • BODY ASS'Y
3306-81380 • • SCREEN
3356-81310 • • VALVE
1850-81270 • • SPRING
1850-81220 • • SCREW
3310-81250 • • PIN
3310-81230 • • LEVER
1850-81490 • BODY
1850-81520 • COVER
1751-81510 • PUMP
1587-81151 • VALVE, THROTTLE
5500-81160 • WASHER
1881-81140 • SWIVEL
1751-81130 • E-RING
1065-81410 • GASKET
1065-81420 • DIAPHRAGM, pump
1850-81470 • GASKET
3310-81260 • DIAPHRAGM ASS'Y
1752-81110 • SCREW
5500-81120 • BRACKET
1751-81180 • NUT
1601-81180 • SCREW
1881-81130 • RING, PACKING
1850-81530 • SCREW
1587-81610 • JET
1751-81240 • O-RING
4500-81910 COVER
M5x30
M5x14
2155-21311 GUARD
0263-90514 SCREW
3360-41110 PISTON
3360-41211 RING
3360-41310 PIN
3350-41320 RING
1400-41410 BEARING
2670-41510 WASHER
1400-42002 CRANKSHAFT COMP.
1300-42410 SHIM
1400-43230 NUT
1000-43240 KEY
4500-51111 SHOE, clutch
4500-51220 SPRING
1200-51211 SCREW
1200-51230 WASHER
1200-51241 WASHER
2073-71110 ROTOR
2104-71200 COIL ASS'Y
2104-71220 • CORD
2616-71320 • CAP
5500-72130 GROMMET
1100-72120 GROMMET
5500-72110 CAP, plug
1900-72120 SPRING
0263-90520 SCREW
6129-11100 HOUSING ASS'Y
06002-06001 • BEARING
04065-02812 • RING
3577-12200 • STOPPER COMP
6278-12311 • DRUM
04064-01210 • SNAP RING
6468-91150 SCREW
1418-15110 MUFFLER
0263-90512 SCREW
1140-51230 WASHER
1580-15230 NUT
M10xP1.0
#55
1918-82001 CLEANER ASS'Y
1918-82110 • COVER
1918-82120 • FILTER
1918-82130 • HOUSING
1918-82140 • PLATE
M5x20
1918-82150 • CHOKE VALVE
1918-82160 • WASHER
1918-82170 • SLEEVE
1918-82180 • SCREEN
1588-83100 CABLE COMP
1586-85001 TANK ASS'Y
2133-85302 • CAP ASS'Y
4570-85230 • • CAP INNER
1030-85141 • • ELEMENT
4500-85220 • • PACKING
3317-57242 • • STOPPER
6044-15202 • PIPE COMP
3302-85400 • FILTER
1260-85460 • CLIP
6044-15310 SPRING
1535-85520 BAND
6086-85470 CLIP
1660-31121 LABEL COVER
1580-75412 LABEL RECOIL
2634-31420 LABEL
M5x12
M6xP1.0
1411-15410 COVER
1400-31113 COVER, FAN
3310-12281 BOLT
1100-72120 GROMMET
1411-32111 COVER
0263-90512 SCREW
2193-86150 CLAMP
M5x20
M5x12
M5x12
1140-72231 CLAMP
0263-90512 SCREW
5535-73110 SPARKPLUG NGK BPMR6A
2132-71240 CORD
1621-14400 CORD COMP
3294-18150 CLAMP
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1-9 Minamidai, Kawagoe, Saitama, 350-1192 Japan
PRINTED ON RECYCLED PAPER
IMPRIMÉ SUR PAPIER RECYCLÉ
GEDRUCKT AUF RECYCLING PAPIER
STAMPATO SU CARTA RICICLATA
IMPRESO EN PAPEL RECICLADO
PRINTED IN JAPAN
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