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Komatsu G451/G4500 Parts List

Zenoah chain saw parts list

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G451/G4500
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.]
APPLICABLE SERIAL NUMBERS : 100101 and up
CHAIN SAW
G5000
2847-93120(111)
Nov. 2001

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Summary of Contents for Komatsu G451/G4500

  • Page 1 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.
  • Page 2 G451/G4500/G5000 Fig.1 POWER UNIT...
  • Page 3 Fig.1 POWER UNIT G451/G4500 Key# PART NUMBER DESCRIPTION 2670-12113 Cylinder 2810-14110 Inlet Pipe 2817-14121 Gasket (K2810-06012) 2670-14130 Screw M5x10 2880-14150 Inner Guide 2670-14311 Bracket 2670-14320 Screw M5x14 2880-14350 Spacer 2880-14360 Gasket 2670-14211 Gasket, Cylinder (K2810-06012) 2850-14220 Bolt, Cylinder M5x20 2810-15220 Bolt, Muffler M5x83...
  • Page 4 G451/G4500/G5000 Fig.2 IGNITION,STARTING...
  • Page 5 Fig.2 IGNITION,STARTING G451/G4500 Key# PART NUMBER DESCRIPTION 2670-71101 Rotor assembly 1850-75220 • Ratchet 2670-71130 • Spring 0308-00040 • Ring 3350-43231 Nut M8 0290-20820 Washer M8 2880-71300 Coil Assembly 2810-71204 • Coil Complete 2810-71220 • • Cord 2670-71230 • • Grommet 2810-72110 •...
  • Page 6 RECOIL STARTER of G451AVS The difference between G451 and G4500 is only the recoil starter. This is the parts list of G451 recoil starter. key# part number 2880-75002 2810-75110 2810-75120 2810-75150 2670-75211 3317-75300 2670-75410 1400-75170 3310-75431 1400-86280 2670-14220 discription Q'ty/unit starter assy ・...
  • Page 7 G451/G4500/G5000 Fig.3 HANDLE...
  • Page 8 Fig.3 HANDLE G451/G4500 Key# PART NUMBER DESCRIPTION 2810-32100 Left handle complete 2671-32210 Screw M5x19 BT 2810-33007 Right handle assembly 3330-33250 • Stopper 3310-33262 • Spring 3310-33271 • Knob 2810-33280 • Damper (A) 2670-75520 • Screw 2810-33210 • Gasket 2670-33311 • Throttle lever 3356-33321 •...
  • Page 9 G451/G4500/G5000 Fig.4 FUELING SYSTEMS...
  • Page 10 Fig.4 FUELING SYSTEMS G451/G4500 Key# PART NUMBER DESCRIPTION 2810-31115 Cylinder cover 2670-14320 Screw M5x14 2854-31513 Label 2810-83305 Cleaner cover complete 3356-83322 • Knob 3388-83340 • Gasket, cap 2810-83500 • Air cleaner complete 2810-83520 • • Seal 1600-33130 • Screw 2810-83410 • Grommet, Air cleaner...
  • Page 11 G451/G4500/G5000 Fig 5 OIL SYSTEM, CLUTCH...
  • Page 12 Fig 5 OIL SYSTEM, CLUTCH G451/G4500 Key# PART NUMBER DESCRIPTION 2841-31801 Oil cap assembly 2841-31820 • Gasket, cap 2670-23101 Oil pipe compete 2670-23120 • Pipe 2670-23131 • Oil filter 2670-23210 Pipe 3330-23121 Valve 3350-26220 Seal 3350-26230 Clip 2880-55100 Oil pump assembly 2850-55110 •...
  • Page 13 G451/G4500/G5000 Fig.6 CARBURETOR...
  • Page 14 Fig.6 CARBURETOR G451/G4500 Key# PART NUMBER DESCRIPTION 2810-81004 Carburetor assembly 3306-81380 • Screen 2810-81120 • Pump cover 3310-81130 • Screw 3304-81140 • Gasket, pump 1172-81150 • Diaphragm, pump 2810-81170 • L needle 1491-81160 • L needle spring 3310-81230 • Lever 3310-81240 •...
  • Page 15 G451/G4500/G5000 Fig.7 BREAKING SYSTEMS...
  • Page 16 Fig.7 BREAKING SYSTEMS G451/G4500 Key# PART NUMBER DESCRIPTION 2670-25310 Bumper 2670-14320 Screw M5x14 2810-25421 Plate 2670-25430 Screw M4x10 2670-25410 Guide 3350-53410 Nut M8 2881-54003 Chain cover assembly 2671-53114 • Chain cover 2880-53150 • Stopper 2671-53210 • Screw 2810-53221 • Nut 2671-53230 •...
  • Page 17 G451/G4500/G5000 Fig.8 GUIDE BAR, SAW CHAIN, TOOLS...
  • Page 18 Fig.8 GUIDE BAR, SAW CHAIN, TOOLS G451/G4500 Key# PART NUMBER DESCRIPTION 2974-52111 Hard nose bar 18” 3646-52113 Sprocket nose bar 18” 3646-52210 Chain 18”(21BP-72E) 3356-97110 Protector 2811-91000 Tool set 3345-91110 • Bag 3320-91140 • Plug wrench 13x19 2670-91150 • Driver 3320-97310 •...
  • Page 19 1-9 Minamidai, Kawagoe, Saitama, 350-1192 Japan PRINTED ON RECYCLED PAPER IMPRIMÉ SUR PAPIER RECYCLÉ GEDRUCKT AUF RECYCLING PAPIER STAMPATO SU CARTA RICICLATA PRINTED IN JAPAN IMPRESO EN PAPEL RECICLADO...

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Zenoah g451Zenoah g4500Zenoah g5000