Zenoah G455AVS User manual

848C8193B2 (412)
CHAIN SAW
December 2004
NOTE :
1. Use KOMATSU ZENOAH genuine parts specified in the parts list for repair and/or replacement.
2. KOMATSU ZENOAH does not warrant the machines, those which have been damaged by the use
of any parts other than those specified by the company.
3. When placing orders of parts for repair and/or replacement, check if the model name and the serial
number are suitable to those specified in the parts list, then use parts number described in the
parts list.
4. The contents described in the parts list may change due to improvement.
5. The parts for the machine shall be supplied within 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. And it is also possible that some
parts may be available even after the limit of ten (10) years.]
G455AVS
G500AVS
APPLICABLE SERIAL NUMBERS :
G455AVS: 514001 and up
G500AVS: 504001 and up
PARTS LIST

Fig.1 ENGINE BLOCK, MUFFLER G455AVS
✽1 Component of 2810-06012 GASKET KIT (Option)
Q'TY
Key# PART NUMBER DESCRIPTION NOTE
/UNIT
24 2850-21230 BOLT 2
25 2670-21250 ELBOW 1
26 2810-22511 STOPPER 1
27 2810-22521 STOPPER 1
28 848C8021D2 GASKET 1 ✽1
29 2670-21320 SCREW 5
30 2810-22210 PIPE 1
31 3310-82230 CLIP 1
32 2810-22411 MAT 1
33 2670-41114 PISTON 1
34 2670-41211 RING 2
35 3350-41310 PIN 1
36 3350-41320 SNAP RING 2
37 1400-41410 BEARING 1
38 2670-41510 WASHER 2
39 848C804202 CRANKSHAFT COMP. 1
40 1000-43240 KEY 1
Q'TY
Key# PART NUMBER DESCRIPTION NOTE
/UNIT
12670-12113 CYLINDER 1
22810-14110 INLET PIPE 1
32817-14121 GASKET 1 ✽1
42670-14130 SCREW 2
52880-14150 GUIDE 1
62670-14311 BRACKET 1
72670-14320 SCREW 2
82880-14350 SPACER 1
92880-14361 GASKET 1
10 2670-14211 GASKET 1 ✽1
11 4820-13180 BOLT 4
12 2810-15220 BOLT 2
13 2850-15230 NUT 2
14 2823-15114 MUFFLER 1
16 2670-14130 SCREW 2
17 3356-15210 GASKET 1 ✽1
18 2810-15310 COVER 1
19 848C802101 CRANKCASE ASSY 1
20 T4012-21240 BEARING 2
21 04065-03515 SNAP RING 1
22 2670-21210 SEAL 1
23 2670-21220 SEAL 1

Fig.1 ENGINE BLOCK, MUFFLER
✽1 Component of 2810-06012 GASKET KIT (Option)
Q'TY
Key# PART NUMBER DESCRIPTION NOTE
/UNIT
24 2850-21230 BOLT 2
25 2670-21250 ELBOW 1
26 2810-22511 STOPPER 1
27 2810-22521 STOPPER 1
28 848C8021D2 GASKET 1 ✽1
29 2670-21320 SCREW 5
30 2810-22210 PIPE 1
31 3310-82230 CLIP 1
32 2810-22411 MAT 1
33 2880-41110 PISTON 1
34 2880-41210 RING 2
35 2880-41310 PIN 1
36 3350-41320 SNAP RING 2
37 1400-41410 BEARING 1
38 2670-41510 WASHER 2
39 848C8A4202 CRANKSHAFT COMP. 1
40 1000-43240 KEY 1
Q'TY
Key# PART NUMBER DESCRIPTION NOTE
/UNIT
12880-12111 CYLINDER 1
22880-14111 PIPE 1
32880-14120 SPRING 1
52880-14150 GUIDE 1
62670-14311 BRACKET 1
72670-14320 SCREW 2
82880-14350 SPACER 1
92880-14361 GASKET 1
10 2670-14211 GASKET 1 ✽1
11 4820-13180 BOLT 4
12 2810-15220 BOLT 2
13 2850-15230 NUT 2
14 2823-15114 MUFFLER 1
16 2670-14130 SCREW 2
17 3356-15210 GASKET 1 ✽1
18 2810-15310 COVER 1
19 848C802101 CRANKCASE ASSY 1
20 T4012-21240 BEARING 2
21 04065-03515 SNAP RING 1
22 2670-21210 SEAL 1
23 2670-21220 SEAL 1
G500AVS

Fig.2 IGNITION SYSTEM, STARTER G455AVS
Q'TY
Key# PART NUMBER DESCRIPTION NOTE
/UNIT
24 2670-14130 • SCREW 1
25 3699-90020-10 SPARK PLUG Champiopn 1 CJ7Y
26 2880-75003 STARTER ASSY 1
27 2810-75110 • CASE 1
28 2810-75120 • GUIDE 1
29 2670-75212 • REEL 1
30 3317-75300 • SPRING COMP. 1
31 2670-75411 • ROPE 1
32 1400-75170 • KNOB 1
33 3310-75431 • WASHER 1
34 1400-86280 • WASHER 1
35 2670-14220 • SCREW 1
36 2810-75150 • BOSS 1
37 2880-75600 COVER 1
38 2880-75620 • SEAT 1
39 2670-14320 SCREW 4
40 2810-75131 LABEL 1
41 2881-98610 SNOW PROTECTOR 1 OPTION
Q'TY
Key# PART NUMBER DESCRIPTION NOTE
/UNIT
12670-71101 ROTOR ASSY 1
21850-75220 • RATCHET 2
32670-71130 • SPRING 2
40308-00040 • RING 2
53350-43231 NUT 1
60290-20820 WASHER 1
72880-71300 COIL ASSY 1
82810-71204 • COIL COMP. 1
92810-71220 • • CORD 1
10 2670-71230 • • GROMMET 1
11 2810-72110 • CAP 1
12 1400-72121 • SPRING 1
13 2670-71320 • TUBE 1
15 2810-71250 • GROMMET 1
16 2670-14220 SCREW 2
17 2810-21270 PLATE 1
18 0260-30410 SCREW 2
19 2670-71510 CORD 1
20 2880-71600 SWITCH ASSY 1
21 2810-71610 • SWITCH 1
22 2670-71621 • COVER 1
23 2880-71630 • PLATE 1

Fig.2 IGNITION SYSTEM, STARTER
Q'TY
Key# PART NUMBER DESCRIPTION NOTE
/UNIT
24 2670-14130 • SCREW 1
25 3699-90020-10 SPARK PLUG Champiopn 1 CJ6Y
26 2880-75003 STARTER ASSY 1
27 2810-75110 • CASE 1
28 2810-75120 • GUIDE 1
29 2670-75212 • REEL 1
30 3317-75300 • SPRING COMP. 1
31 2670-75411 • ROPE 1
32 1400-75170 • KNOB 1
33 3310-75431 • WASHER 1
34 1400-86280 • WASHER 1
35 2670-14220 • SCREW 1
36 2810-75150 • BOSS 1
37 2880-75600 COVER 1
38 2880-75620 • SEAT 1
39 2670-14320 SCREW 4
40 2880-75131 LABEL 1
41 2881-98610 SNOW PROTECTOR 1 OPTION
Q'TY
Key# PART NUMBER DESCRIPTION NOTE
/UNIT
12670-71101 ROTOR ASSY 1
21850-75220 • RATCHET 2
32670-71130 • SPRING 2
40308-00040 • RING 2
53350-43231 NUT 1
60290-20820 WASHER 1
72880-71300 COIL ASSY 1
82810-71204 • COIL COMP. 1
92810-71220 • • CORD 1
10 2670-71230 • • GROMMET 1
11 2810-72110 • CAP 1
12 1400-72121 • SPRING 1
13 2670-71320 • TUBE 1
15 2810-71250 • GROMMET 1
16 2670-14220 SCREW 2
17 2810-21270 PLATE 1
18 0260-30410 SCREW 2
19 2670-71510 CORD 1
20 2880-71600 SWITCH ASSY 1
21 2810-71610 • SWITCH 1
22 2670-71621 • COVER 1
23 2880-71630 • PLATE 1
G500AVS

Fig.3 HANDLES
Q'TY
Key# PART NUMBER DESCRIPTION NOTE
/UNIT
27 2880-35250 CAP 2
28 2881-35110 SPRING 1
29 2881-35120 SPACER 1
Q'TY
Key# PART NUMBER DESCRIPTION NOTE
/UNIT
12880-32101 LEFT HANDLE COMP. 1
28488251901 SCREW 4
72810-33007 HANDLE ASSY 1
83330-33250 • STOPPER 1
93310-33262 • SPRING 1
10 3310-33271 • KNOB 1
11 2810-33280 • DAMPER (A) 1
12 2670-75520 • SCREW 1
13 2810-33211 • GASKET 1
14 2670-33311 • LEVER 1
15 3356-33321 • SPRING 1
16 04025-00524 • SPRING PIN 1
17 848C3033E3 ARM 1
18 2670-34110 COVER 1
19 8488251901 SCREW 1
20 2810-25210 CHAIN CATCHER 1
21 2670-14320 SCREW 1
22 2880-35111 DAMPER 3
23 8488251601 SCREW 4
24 2810-35150 CAP 3
25 2880-35211 DAMPER 2
26 3350-35170 BOLT 2
G455AVS

Fig.3 HANDLES
Q'TY
Key# PART NUMBER DESCRIPTION NOTE
/UNIT
24 2810-35150 CAP 3
25 2880-35211 DAMPER 2
26 3350-35170 BOLT 2
27 2880-35250 CAP 2
28 2881-35110 SPRING 1
29 2881-35120 SPACER 1
Q'TY
Key# PART NUMBER DESCRIPTION NOTE
/UNIT
12880-32101 LEFT HANDLE COMP. 1
28488251901 SCREW 4
32880-32250 BRACKET 1
42670-14130 SCREW 1
52880-32270 SCREW 1
62880-31211 DAMPER 1
72810-33007 HANDLE ASSY 1
83330-33250 • STOPPER 1
93310-33262 • SPRING 1
10 3310-33271 • KNOB 1
11 2810-33280 • DAMPER (A) 1
12 2670-75520 • SCREW 1
13 2810-33211 • GASKET 1
14 2670-33311 • LEVER 1
15 3356-33321 • SPRING 1
16 04025-00524 • SPRING PIN 1
17 848C3033E3 ARM 1
18 2670-34110 COVER 1
19 8488251901 SCREW 1
20 2810-25210 CHAIN CATCHER 1
21 2670-14320 SCREW 1
22 2880-35111 DAMPER 3
23 8488251601 SCREW 4
G500AVS

Fig.4 FUEL SUPPLY SYSTEM
Q'TY
Key# PART NUMBER DESCRIPTION NOTE
/UNIT
24 848C808535 FUEL PIPE ASSY 1
25 848C8085R4 • PIPE 1
26 2850-34350 • COLLAR 1
27 3302-85400 • FILTER ASSY 1
30 2670-34401 TANK CAP ASSY 1
31 2670-34430 • GASKET 1
32 2670-34500 BREATHER ASSY 1
34 3350-34540 • PIPE 1
35 1260-85460 • CLIP 1
36 2811-98501 CLEANER COMP. 1 OPTION
Q'TY
Key# PART NUMBER DESCRIPTION NOTE
/UNIT
12810-31115 CYLINDER COVER 1
22670-14320 SCREW 5
32813-31420 LABEL 1
42810-83305 CLEANER COVER COMP. 1
53356-83322 • KNOB 1
63388-83340 • GASKET 1
72810-83500 • CLEANER COMP. 1
82810-83520 • • SEAL 1
91600-33130 • SCREW 1
10 2810-83410 • GROMMET 1
11 2810-83101 CLEANER COMP. 1
12 2813-31210 LABEL 1
13 848C818103 CARBURETOR ASSY 1
14 2880-82310 GUIDE (I) 1
15 2880-82350 GUIDE (HL) 1
16 2880-82102 MANIFOLD COMP. 1
17 2810-82141 SUPPORTER 1
18 2880-82210 SCREW 2
19 2880-82410 CHOKE ROD 1
20 2670-82421 GROMMET 1
21 2670-82430 GUIDE 1
22 2880-82511 THROTTLE ROD 1
23 2810-82520 GROMMET 1
G455AVS

Fig.4 FUEL SUPPLY SYSTEM
Q'TY
Key# PART NUMBER DESCRIPTION NOTE
/UNIT
24 848C808535 FUEL PIPE ASSY 1
25 848C8085R4 • PIPE 1
26 2850-34350 • COLLAR 1
27 3302-85400 • FILTER ASSY 1
30 2670-34401 TANK CAP ASSY 1
31 2670-34430 • GASKET 1
32 2670-34500 BREATHER ASSY 1
34 3350-34540 • PIPE 1
35 1260-85460 • CLIP 1
36 2811-98501 CLEANER COMP. 1 OPTION
Q'TY
Key# PART NUMBER DESCRIPTION NOTE
/UNIT
12880-31101 CYLINDER COVER COMP. 1
22670-14320 SCREW 5
32883-31420 LABEL 1
42810-83305 CLEANER COVER COMP. 1
53356-83322 • KNOB 1
63388-83340 • GASKET 1
72810-83500 • CLEANER COMP. 1
82810-83520 • • SEAL 1
91600-33130 • SCREW 1
10 2810-83410 • GROMMET 1
11 2810-83101 CLEANER COMP. 1
12 2813-31210 LABEL 1
13 848C8E8102 CARBURETOR ASSY 1
14 2880-82310 GUIDE (I) 1
15 2880-82350 GUIDE (HL) 1
16 2880-82102 MANIFOLD COMP. 1
17 2810-82141 SUPPORTER 1
18 2880-82210 SCREW 2
19 2880-82410 CHOKE ROD 1
20 2670-82421 GROMMET 1
21 2670-82430 GUIDE 1
22 2880-82511 THROTTLE ROD 1
23 2810-82520 GROMMET 1
G500AVS

Fig.5 OIL FEED SYSTEM, CLUTCH,
Q'TY
Key# PART NUMBER DESCRIPTION NOTE
/UNIT
Q'TY
Key# PART NUMBER DESCRIPTION NOTE
/UNIT
12841-31801 CAP ASSY 1
22841-31820 • GASKET 1
32670-23101 OIL PIPE ASSY 1
42670-23120 • PIPE 1
52670-23131 • FILTER 1
62670-23210 PIPE 1
73330-23121 VALVE 1
8 3350-26220 SEAL 1
93350-26230 CLIP 1
10 848C806711 OIL PUMP ASSY 1
11 2670-55120 • GEAR 1
12 2670-55220 SEAL 1
13 2670-55410 SCREW 2
14 2670-55610 COVER 1
15 2670-55410 SCREW 3
16 848C805121 CLUTCH ASSY 1
17 3317-51231 • SPRING 1
18 2670-51210 PLATE 1
19 2810-51310 BEARING 1
20 2880-51110 DRUM 1
21 3350-51121 RIM 1
G455AVS