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© Honda Motor Co., Ltd.

SERVICE PUBLICATION OFFICE

Date of Issue: September 2010

OUTLINE OF CHANGES

INTRODUCTION

This supplement covers the construction, function and 
servicing procedures of the Honda GX240R2/RT2/T2/
U2/UT2 and GX340R2/RT2/T2/U2/UT2 engines.
For service information that is not covered in this 
supplement, please refer to the GX390RT2/T2/UT2 
base shop manual (part number 62Z5F00) and 
GX270T2/UT2 supplement (part number 62Z5F00Z).

All information contained in this manual is based on the 
latest product information available at the time of 
printing. We reserve the right to make changes at 
anytime without notice.

No part of this publication may be reproduced, stored in 
a retrieval system, or transmitted, in any form, by any 
means, electronic, mechanical, photocopying, 
recording, or otherwise, without prior written permission 
of the publisher. This includes text, figures, and tables.

As you read this manual, you will find information that is 
preceded by a 

 symbol. The purpose of this 

message is to help prevent damage to this Honda 
product, other property, or the environment.

SAFETY MESSAGES

Your safety and the safety of others are very important. 
To help you make informed decisions, we have 
provided safety messages and other safety information 
throughout this manual. Of course, it is not practical or 
possible to warn you about all the hazards associated 
with servicing these products. You must use your own 
good judgement.

You will find important safety information in a variety of 
forms, including:

· 

Safety Labels – on the product.

· 

Safety Messages – preceded by a safety alert symbol 

 and one of three signal words, DANGER, 

WARNING, or CAUTION. 
These signal words mean:

· 

Instructions – how to service these products correctly 

and safely.

You WILL be KILLED or SERIOUSLY 
HURT if you don’t follow instructions.

You CAN be KILLED or SERIOUSLY 
HURT if you don’t follow instructions.

You CAN be HURT if you don’t follow 
instructions.

 

 

 

SPECIFICATIONS

1

SERVICE INFORMATION

2

MAINTENANCE

3

TROUBLESHOOTING

4

COVER

5

FUEL SYSTEM

6

GOVERNOR SYSTEM

7

CHARGING SYSTEM

8

IGNITION SYSTEM

9

STARTING SYSTEM

10

OTHER ELECTRICAL

11

MUFFLER

12

CYLINDER HEAD/VALVES

13

CRANKCASE

14

WIRING DIAGRAMS

15

INDEX

The marked sections contain no changes. 
They are not covered in this supplement.

62Z5F00X.book  2 ページ  2010年9月16日 木曜日 午後7時26分

Summary of Contents for GX240R2

Page 1: ...ng safety equipment When performing any service task be especially careful of the following Read all of the instructions before you begin and make sure you have the tools the replacement or repair parts and the skills required to perform the tasks safely and completely Protect your eyes by using proper safety glasses goggles or face shields anytime you hammer drill grind or work around pressurized...

Page 2: ...oduct other property or the environment SAFETY MESSAGES Your safety and the safety of others are very important To help you make informed decisions we have provided safety messages and other safety information throughout this manual Of course it is not practical or possible to warn you about all the hazards associated with servicing these products You must use your own good judgement You will find...

Page 3: ... unless otherwise specified Use molybdenum oil solution mixture of the engine oil and molybdenum grease in a ratio of 1 1 Use multi purpose grease lithium based multi purpose grease NLGI 2 or equivalent Use marine grease water resistant urea based grease Apply a locking agent Use a medium strength locking agent unless otherwise specified Apply sealant Use automatic transmission fluid x Indicates t...

Page 4: ... ECM Engine Control Module EMT Exhaust Manifold Temperature EOP Engine Oil Pressure EX Exhaust F Front or Forward GND Ground HO2S Heated Oxygen Sensor IAB Intake Air Bypass IAC Idle Air Control IAT Intake Air Temperature I D Inside Diameter IG or IGN Ignition IN Intake INJ Injection L Left MAP Manifold Absolute Pressure MIL Malfunction Indicator Lamp O D Outside Diameter OP Optional Part PGM FI Pr...

Page 5: ...QX VXK Except GX240R2 EDN2 UT2 QAG2 TOP INSTALLATION DIRECTION Except GX340R2 EDN2 T2 VMT TOP INSTALLATION DIRECTION DUAL ELEMENT CYCLONE AIR CLEANER TYPE TOP INSTALLATION DIRECTION GX340T2 VMT LOW PROFILE AIR CLEANER TYPE TOP INSTALLATION DIRECTION OUTLINE OF CHANGES 62Z5F00X book 5 ページ 2010年9月16日 木曜日 午後7時26分 ...

Page 6: ... 90 in STUD BOLT 8 x 106 90 0 mm 3 54 in STUD BOLT 8 x 98 82 0 mm 3 23 in STUD BOLT 8 x 123 107 0 mm 4 21 in STUD BOLT 8 x 131 5 115 5 mm 4 55 in CYLINDER STUD BOLT REPLACEMENT AIR CLEANER SIDE STUD BOLT 8 x 131 5 115 5 mm 4 55 in STUD BOLT 8 x 115 99 0 mm 3 90 in STUD BOLT 8 x 106 90 0 mm 3 54 in SCREW MUFFLER ARRESTER GX240 SEPARATED PROTECTOR TYPE SCREW MUFFLER ARRESTER SEPARATEDPROTECTOR TYPE ...

Page 7: ...MEMO 62Z5F00X book 7 ページ 2010年9月16日 木曜日 午後7時26分 ...

Page 8: ...1 SPECIFICATIONS TYPE CODE 1 2 DIMENSIONS AND WEIGHTS 1 3 ENGINE SPECIFICATIONS 1 7 PERFORMANCE CURVES 1 9 DIMENSIONAL DRAWINGS 1 11 P T O DIMENSIONAL DRAWINGS 1 15 62Z5F00X book 1 ページ 2010年9月16日 木曜日 午後7時26分 ...

Page 9: ...e SXE4 SXQ4 VXB7 VXB9 WKT2 P T O S type S type V type V type W type Model GX340R2 GX340RT2 GX340RT2 GX340RT2 GX340RT2 Type EDN2 VDE2 VWC VWE VWE2 P T O E type V type V type V type V type Model GX340T2 GX340T2 GX340T2 GX340T2 GX340U2 Type PX QX VMT VXK QA2 P T O P type Q type E type V type Q type Model GX340UT2 GX340UT2 GX340UT2 GX340UT2 GX340UT2 Type HA2 LXQ4 PKT2 QA2 QAE2 P T O H type L type P ty...

Page 10: ...width E type 428 mm 16 9 in H type 428 mm 16 9 in 428 mm 16 9 in L type 428 mm 16 9 in 428 mm 16 9 in P type 428 mm 16 9 in 428 mm 16 9 in Q type 428 mm 16 9 in 428 mm 16 9 in R type 428 mm 16 9 in S type 428 mm 16 9 in V type 428 mm 16 9 in 428 mm 16 9 in W type 428 mm 16 9 in Overall height E type 303 mm 11 9 in H type 410 mm 16 1 in 422 mm 16 6 in L type 422 mm 16 6 in 422 mm 16 6 in P type 410...

Page 11: ... 69 4 lbs L type 31 5 kg 69 4 lbs 31 5 kg 69 4 lbs P type 30 5 kg 67 2 lbs 30 5 kg 67 2 lbs Q type 30 5 kg 67 2 lbs 30 5 kg 67 2 lbs R type 35 0 kg 77 2 lbs S type 30 5 kg 67 2 lbs V type 26 1 kg 57 5 lbs 30 5 kg 67 2 lbs W type 30 5 kg 67 2 lbs Variation No balancer type Cyclone air cleaner type Starter motor type Control box type Low profile type 1 Overall length difference 20 mm 0 8 in Overall ...

Page 12: ... 18 1 in 460 mm 18 1 in 460 mm 18 1 in S type 460 mm 18 1 in V type 460 mm 18 1 in 460 mm 18 1 in 460 mm 18 1 in Overall height E type 313 mm 12 3 in 448 mm 17 6 in H type 448 mm 17 6 in L type 448 mm 17 6 in P type 448 mm 17 6 in 448 mm 17 6 in Q type 448 mm 17 6 in 448 mm 17 6 in 448 mm 17 6 in S type 448 mm 17 6 in V type 313 mm 12 3 in 448 mm 17 6 in 448 mm 17 6 in Dry weight E type 27 3 kg 60...

Page 13: ...g 83 3 lbs S type 37 8 kg 83 3 lbs V type 33 4 kg 73 6 lbs 37 8 kg 83 3 lbs 37 8 kg 83 3 lbs Variation Cyclone air cleaner type Starter motor type Control box type Low profile type 1 Overall length difference 6 mm 0 2 in Overall width difference 93 mm 3 7 in 5 mm 0 2 in 39 mm 1 5 in Overall height difference 135 mm 5 3 in Dry weight dif ference 0 2 kg 0 4 lbs 2 5 kg 5 5 lbs 3 2 kg 7 1 lbs 4 4 kg 9...

Page 14: ...P 3 600 min 1 rpm Maximum net torque SAE J1349 1 18 3 N m 1 86 kgf m 13 4 lbf ft 2 500 min 1 rpm Compression ratio 8 5 1 Fuel consumption at continuous rated power 2 2 Liters 0 58 US gal 0 48 Imp gal h Ignition system C D I Capacitor Discharge Ignition type magneto ignition Ignition timing B T D C 10 1 400min 1 rpm Spark advancer performance B T D C 10 20 Spark plug BPR6ES NGK W20EPR U DENSO Lubri...

Page 15: ...power SAE J1349 1 8 0 kW 10 7 HP 3 600 min 1 rpm 2 Continuous rated power 6 3 kW 8 4 HP 3 600 min 1 rpm Maximum net torque SAE J1349 1 26 4 N m 2 69 kgf m 19 5 lbf ft 2 500 min 1 rpm Compression ratio 8 2 1 Fuel consumption at continuous rated power 3 1 Liters 0 82 US gal 0 68 Imp gal h Ignition system C D I Capacitor Discharge Ignition type magneto ignition Ignition timing B T D C 10 1 400min 1 r...

Page 16: ...E SPEED rpm 2000 3600 3000 KW HP OUTPUT TORQUE 13 14 15 7 6 5 4 8 9 PS 7 6 5 4 8 9 20 NET POWER NET TORQUE 12 11 1 6 1 7 1 8 1 9 2 0 1 5 18 16 14 3 2 4 5 6 7 N m lbf ft kgf m RECOMMENDED OPERATING SPEED RANGE 62Z5F00X book 9 ページ 2010年9月16日 木曜日 午後7時26分 ...

Page 17: ...0 3000 KW HP OUTPUT TORQUE 17 18 19 20 9 8 7 6 10 11 12 PS 9 8 7 6 10 11 12 26 28 NET POWER NET TORQUE 16 15 2 3 2 4 2 5 2 6 2 7 2 8 2 2 24 22 20 5 4 6 7 8 9 N m lbf ft kgf m RECOMMENDED OPERATING SPEED RANGE 62Z5F00X book 10 ページ 2010年9月16日 木曜日 午後7時26分 ...

Page 18: ...box type 462 18 2 GX240T2 410 16 1 GX240U2 UT2 422 16 6 99 3 9 134 5 3 278 10 9 92 3 6 133 5 5 26 116 4 6 192 7 6 13 0 5 34 5 1 36 96 3 8 105 4 1 195 5 7 70 Without control box type 428 16 9 CRANKSHAFT P T O CONTROL BOX STARTER MOTOR If equipped If equipped 418 16 5 E 360 14 2 W 370 14 6 GX240R2 RT2 303 11 9 GX240RT2 V 420 16 5 62Z5F00X book 11 ページ 2010年9月16日 木曜日 午後7時26分 ...

Page 19: ...40 17 3 REDUCTION UNIT R 188 5 7 42 99 3 9 134 5 3 With control box type 462 18 2 Without control box type 428 16 9 116 4 6 192 7 6 418 16 5 13 0 5 34 5 1 36 96 3 8 R 90 8 3 57 L H 209 9 8 26 CONTROL BOX STARTER MOTOR If equipped If equipped L 405 15 9 L H 140 3 5 52 GX240T2 410 16 1 GX240U2 UT2 422 16 6 62Z5F00X book 12 ページ 2010年9月16日 木曜日 午後7時26分 ...

Page 20: ... 9 133 5 5 26 141 5 5 57 201 0 7 91 17 0 7 27 1 1 103 4 1 105 4 1 195 5 7 70 Without control box type 460 18 1 CRANKSHAFT P T O CONTROL BOX STARTER MOTOR If equipped If equipped GX340T2 U2 UT2 448 17 6 E 365 14 4 Except GX340T2 447 17 6 GX340T2 435 17 1 GX340R2 RT2 313 12 3 GX340T2 UT2 V 425 16 7 GX340RT2 V 430 16 9 62Z5F00X book 13 ページ 2010年9月16日 木曜日 午後7時26分 ...

Page 21: ...7 133 5 5 26 142 5 6 201 7 9 17 0 7 27 1 1 103 4 1 105 4 1 195 5 7 70 REDUCTION UNIT 68 1 2 68 P T O SHAFT H 148 3 5 84 L 440 17 3 98 3 9 121 8 4 80 With control box type 499 19 6 Without control box type 460 18 1 447 17 6 448 17 6 L 155 6 1 62Z5F00X book 14 ページ 2010年9月16日 木曜日 午後7時26分 ...

Page 22: ... Φ24 947 24 980 Φ0 9822 0 9835 10 0 4 68 1 2 68 REDUCTION UNIT P T O SHAFT 7 00 7 05 0 276 0 278 60 0 2 36 42 1 7 20 9 21 0 0 82 0 83 M8 x 1 25 6 PLACES 28 1 1 M8 x 1 25 Unit mm in 80 3 1 75 3 0 15 5 0 61 30 30 45 45 P D 165 1 6 50 P D 1 1 3 1 4 4 5 70 2 8 Φ7 15 Φ0 281 2 PLACES CRANKSHAFT P T O M8 x 1 25 4 PLACES Φ8 51 Φ0 335 4 PLACES Φ89 Φ3 5 103 4 1 M20 x 1 5 55 2 2 62Z5F00X book 15 ページ 2010年9月1...

Page 23: ...SPECIFICATIONS 1 16 GX340 P T O type page 1 2 P T O DIMENSIONAL DRAWINGS base shop manual 62Z5F00 62Z5F00X book 16 ページ 2010年9月16日 木曜日 午後7時26分 ...

Page 24: ...2 1 2 2 SERVICE INFORMATION MAINTENANCE STANDARDS 2 2 TORQUE VALUES 2 4 LUBRICATION SEAL POINT 2 4 HARNESS AND TUBE ROUTING 2 5 62Z5F00X book 1 ページ 2010年9月16日 木曜日 午後7時26分 ...

Page 25: ...1 140 0 0449 Second 1 160 1 175 0 0457 0 0463 1 140 0 0449 Connecting rod Small end I D 18 005 18 020 0 7089 0 7094 18 07 0 711 Big end side clearance 0 1 0 4 0 004 0 016 1 0 0 04 Big end I D 33 025 33 039 1 3002 1 3007 33 07 1 302 Big end oil clearance 0 040 0 064 0 0016 0 0025 0 12 0 005 Crankshaft Crank pin O D 32 975 32 985 1 2982 1 2986 32 92 1 296 Crankshaft runout 0 1 0 004 Cylinder barrel ...

Page 26: ...006 0 0020 0 12 0 005 Piston pin bore I D 20 002 20 008 0 7875 0 7877 20 042 0 7891 Piston pin Pin O D 19 994 20 000 0 7872 0 7874 19 950 0 7854 Piston pin to piston pin bore clearance 0 002 0 014 0 0001 0 0006 0 08 0 003 Piston rings Ring side clearance Top 0 030 0 060 0 0012 0 0024 0 15 0 006 Second 0 030 0 060 0 0012 0 0024 0 15 0 006 Ring end gap Top 0 200 0 350 0 0079 0 0138 1 0 0 04 Second 0...

Page 27: ...t O D 15 966 15 984 0 6286 0 6293 15 92 0 627 Carburetor Main jet BE80N A 98 BE80M A 98 BE80P A 98 Pilot screw opening BE80N A 1 3 4 turns out BE80M A 1 3 4 turns out BE80P A 1 3 4 turns out Float height 13 2 0 52 Spark plug Gap 0 7 0 8 0 028 0 031 Ignition coil Air gap 0 2 0 6 0 01 0 02 Starter motor Brush length 7 0 0 28 3 5 0 14 Mica depth 1 0 0 04 0 2 0 01 Charge coil Resistance 1A 3 00 4 00 Ω...

Page 28: ...NFORMATION 2 5 HARNESS AND TUBE ROUTING TUBE CLAMP 3 mm INSERT DEPTH MARK 40 mm TUBE CLIP TUBE CLAMP FUEL TUBE CARBURETOR SIDE BREATHER TUBE TUBE CLAMP SUPPORTER RUBBER 62Z5F00X book 5 ページ 2010年9月16日 木曜日 午後7時26分 ...

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