Manual de Taller HONDA CB125S MANUAL TALLER 2018

SHOP MANUAL

CBF125S

25-1

dummytext

25. CBF125S-K ADDENDUM

A Few Words About Safety ·······················25-2

INTRODUCTION··········································25-3

MODEL IDENTIFICATION ··························25-4

SPECIFICATIONS······································· 25-5

WIRING DIAGRAM ····································· 25-7

25-2

dummyheaddummyhead

CBF125S-K ADDENDUM

A Few Words About Safety

Service Information

The service and repair information contained in this manual is intended for use by qualified, professional technicians. Attempting

service or repairs without the proper training, tools, and equipment could cause injury to you or others. It could also damage the

vehicle or create an unsafe condition.

This manual describes the proper methods and procedures for performing service, maintenance and repairs. Some procedures

require the use of specially designed tools and dedicated equipment. Any person who intends to use a replacement part, service

procedure or a tool that is not recommended by Honda, must determine the risks to their personal safety and the safe operation of

the vehicle.

If you need to replace a part, use genuine Honda parts with the correct part number or an equivalent part. We strongly recommend

that you do not use replacement parts of inferior quality.

For Your Customer’s Safety

Proper service and maintenance are essential to the customer’s safety and the reliability of the vehicle. Any error or oversight while

servicing a vehicle can result in faulty operation, damage to the vehicle, or injury to others.

For Your Safety

Because this manual is intended for the professional service technician, we do not provide warnings about many basic shop safety

practices (e.g., Hot parts–wear gloves). If you have not received shop safety training or do not feel confident about your knowledge

of safe servicing practice, we recommend that you do not attempt to perform the procedures described in this manual.

Some of the most important general service safety precautions are given below. However, we cannot warn you of every

conceivable hazard that can arise in performing service and repair procedures. Only you can decide whether or not you should

perform a given task.

Important Safety Precautions

Make sure you have a clear understanding of all basic shop safety practices and that you are wearing appropriate clothing and

using 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 any time you hammer, drill, grind, pry or work around

pressurized air or liquids, and springs or other stored-energy components. If there is any doubt, put on eye protection.

• Use other protective wear when necessary, for example gloves or safety shoes. Handling hot or sharp parts can cause severe

burns or cuts. Before you grab something that looks like it can hurt you, stop and put on gloves.

• Protect yourself and others whenever you have the vehicle up in the air. Any time you lift the vehicle, either with a hoist or a jack,

make sure that it is always securely supported. Use jack stands.

Make sure the engine is off before you begin any servicing procedures, unless the instruction tells you to do otherwise. This will

help eliminate several potential hazards:

• Carbon monoxide poisoning from engine exhaust. Be sure there is adequate ventilation whenever you run the engine.

• Burns from hot parts or coolant. Let the engine and exhaust system cool before working in those areas.

• Injury from moving parts. If the instruction tells you to run the engine, be sure your hands, fingers and clothing are out of the way.

Gasoline vapors and hydrogen gases from batteries are explosive. To reduce the possibility of a fire or explosion, be careful when

working around gasoline or batteries.

• Use only a nonflammable solvent, not gasoline, to clean parts.

• Never drain or store gasoline in an open container.

• Keep all cigarettes, sparks and flames away from the battery and all fuel-related parts.

Improper service or repairs can create an unsafe

condition that can cause your customer or others to

be seriously hurt or killed.

Follow the procedures and precautions in this

manual and other service materials carefully.

Failure to properly follow instructions and

precautions can cause you to be seriously hurt or

killed.

Follow the procedures and precautions in this

manual carefully.

25-3

dummyheaddummyhead

CBF125S-K ADDENDUM

INTRODUCTION

This manual describes the service procedures for the CBF125S-K.

Refer to CGX125SH-C (No.62KYYB0), CGX125SH-D (No.62KYYB0Z), CGX125SH-E (No.62KYYB0Y), CGX125WH-F

(No.62KYYB0X), CGX125SH-F (No.62KYYB0W), CGX125SH-H (No.62KYYB0V), CGX125TF-H (No.62KYYB0U), and CBF125S-

J/K (62KYYB0T) for service procedures and data not included in this addendum.

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 your vehicle, other property, or the environment.

SERVICE PUBLICATION OFFICE

Date of Issue: September, 2018

Your safety, and the safety of others, is very important. To help you make informed decisions we have provided safety

messages and other information throughout this manual. Of course, it is not practical or possible to warn you about all the

hazards associated with servicing this vehicle.

You must use your own good judgement.

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

• Safety Labels – on the vehicle

• Safety Messages – preceded by a safety alert symbol and one of three signal words, DANGER, WARNING, or CAUTION.

These signal words mean:

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.

• Instructions – how to service this vehicle correctly and safely.

ALL INFORMATION, ILLUSTRATIONS, DIRECTIONS AND SPECIFICATIONS INCLUDED IN THIS PUBLICATION ARE

BASED ON THE LATEST PRODUCT INFORMATION AVAILABLE AT THE TIME OF APPROVAL FOR PRINTING. Honda

Motor Co., Ltd. RESERVES THE RIGHT TO MAKE CHANGES AT ANY TIME WITHOUT NOTICE AND WITHOUT

INCURRING ANY OBLIGATION WHATSOEVER. NO PART OF THIS PUBLICATION MAY BE REPRODUCED WITHOUT

WRITTEN PERMISSION. THIS MANUAL IS WRITTEN FOR PERSONS WHO HAVE ACQUIRED BASIC KNOWLEDGE OF

MAINTENANCE ON Honda MOTORCYCLES, MOTOR SCOOTERS OR ATVS.

25-4

dummyheaddummyhead

CBF125S-K ADDENDUM

MODEL IDENTIFICATION

This manual covers following types of CBF125S models:

SERIAL NUMBERS

Code Country Air cut-off valve Carburetor heater Secondary air supply

system

II AG Argentina – O O

II CO Columbia O – O

II MX Mexico O – O

III CO Columbia – – O

The Vehicle Identification Number (V.I.N.) [1] is stamped on

the right side of the steering head.

The engine serial number [1] is stamped on the lower left side

of the crankcase.

Except II AG type: The registered number plate [1] is riveted

on the right side of the frame pipe.

The color label [1] is attached as shown. When ordering

color-coded parts, always specify the designated color code.

[1]

25-5

dummyheaddummyhead

CBF125S-K ADDENDUM

SPECIFICATIONS

GENERAL SPECIFICATIONS

ITEM SPECIFICATION

DIMENSIONS Overall length 2,037 mm (80.2 in)

Overall width 772 mm (30.4 in)

Overall height 1,070 mm (42.1 in)

Wheelbase 1,310 mm (51.6 in)

Seat height 781 mm (30.7 in)

Footpeg height 284 mm (11.2 in)

Ground clearance II AG/III CO 178 mm (7.0 in)

II CO/II MX 183 mm (7.2 in)

Curb weight 117 kg (258 lbs)

Maximum weight capacity 155 kg (342 lbs)

FRAME Frame type Diamond type

Front suspension Telescopic fork

Front wheel travel 116 mm (4.6 in)

Rear suspension Swingarm

Rear wheel travel 92 mm (3.6 in)

Front tire size 80/100-18MC 47P

Rear tire size 90/90-18M/C 51P

Front tire brand P206 (YUANXING)

Rear tire brand CY160B (YUANXING)

Front brake Hydraulic single disc

Rear brake Mechanical drum (leading-trailing)

Caster angle 27° 17’

Trail length 98 mm (3.9 in)

Fuel tank capacity 10.1 liters (2.67 US gal, 2.22 Imp gal)

Fuel tank reserve capacity 0.1 liter (0.03 US gal, 0.02 Imp gal)

ENGINE Cylinder arrangement Single cylinder inclined 25° from vertical

Bore and stroke 52.4 x 57.9 mm (2.06 x 2.28 in)

Displacement 124.8 cm

(7.62 cu-in)

Compression ratio 9.0 : 1

Valve train Chain driven OHC with rocker arm

Intake valve opens 5° BTDC at 1 mm (0.04 in) lift

closes 25° ABDC at 1 mm (0.04 in) lift

Exhaust valve opens 25° BBDC at 1 mm (0.04 in) lift

closes 0° ATDC at 1 mm (0.04 in) lift

Lubrication system Forced pressure and wet sump

Oil pump type Trochoid

Cooling system Air cooled

Air filtration Viscous paper filter

Engine dry weight 23.8 kg (52.5 lbs)

CARBURETOR Carburetor type Piston valve type

Throttle bore 18 mm (0.7 in)

DRIVE TRAIN Clutch system Multi-plate, wet

Clutch operation system Cable operating

Transmission 4 speeds

Primary reduction 3.250 (65/20)

Final reduction 3.142 (44/14)

Gear ratio 1st 3.181 (35/11)

2nd 1.705 (29/17)

3rd 1.238 (26/21)

4th 0.916 (22/24)

Gearshift pattern Left foot operated return system

1 - N - 2 - 3 - 4

ELECTRICAL Ignition system DC – CDI

Starting system Electric starter motor and kickstarter

Charging system Single phase output alternator

Regulator/rectifier SCR shorted, single phase full-wave rectification

Lighting system Battery

25-6

dummyheaddummyhead

CBF125S-K ADDENDUM

FUEL SYSTEM SPECIFICATIONS

BATTERY/CHARGING SYSTEM SPECIFICATIONS

ITEM SPECIFICATIONS

Carburetor identification number II AG PB7YS

II CO/II MX PB7YV

III CO PB7RW

Main jet II AG/III CO #102

II CO/II MX #100

Slow jet II CO/II MX #35

II AG/III CO #38

Air screw opening 1 3/4 turns out from the fully seated position

Float level 10.7 mm (0.42 in)

Idle speed 1,400 ± 100 min

-1

(rpm)

PAIR control valve specified

vacuum

II AG 54.7 kPa (410 mmHg)

ITEM SPECIFICATIONS

Battery Type II AG/II MX 12M7A-3A

II CO/III CO YB7BL-A

24-6

dummyheaddummyhead

CBF125S-J/K ADDENDUM

IGNITION SYSTEM SPECIFICATIONS

FUEL SYSTEM SPECIFICATIONS

LUBRICATION SYSTEM SPECIFICATIONS

FRONT WHEEL/BRAKE/SUSPENSION/STEERING SPECIFICATIONS

Unit: mm (in)

REAR WHEEL/BRAKE/SUSPENSION SPECIFICATIONS

Unit: mm (in)

BRAKE SYSTEM SPECIFICATIONS

Unit: mm (in)

ITEM SPECIFICATION

Spark plug Standard CPR6EA-9 (NGK)

Option CPR7EA-9 (NGK)

ITEM SPECIFICATIONS

Carburetor identification number CL/IV LA PB7YS

LA PB7YQ

II LA PB7RW

PE/III LA PB7YR

Main jet LA #105

CL/PE/II LA/III LA/

IV LA

#102

Slow jet LA/II LA #35

CL/PE/III LA/IV LA #38

Air screw opening LA/II LA 1 5/8 turns out from the fully seated position

CL/PE/III LA/IV LA 1 3/4 turns out from the fully seated position

Float level 10.7 mm (0.42 in)

Idle speed 1,400 ± 100 min

-1

(rpm)

ITEM STANDARD SERVICE LIMIT

Engine oil capacity After draining 0.9 liter (0.95 US qt, 0.80 Imp qt) –

After disassembly 1.0 liters (1.1 US qt, 0.9 Imp qt) –

ITEM STANDARD SERVICE LIMIT

Cold tire

pressure

Driver only 175 kPa (1.75 kgf/cm

, 25 psi) –

Driver and passenger 175 kPa (1.75 kgf/cm

, 25 psi) –

Wheel rim

runout

Radial – 2.0 (0.08)

Axial – 2.0 (0.08)

Fork Spring free length 454.5 (17.90) –

Fluid level 169.5 (6.7) –

Fluid capacity 135 ± 2.5 cm

(4.6 ± 0.08 US oz, 4.8 ± 0.09 Imp oz)

–

ITEM STANDARD SERVICE LIMIT

Wheel rim runout Radial – 2.0 (0.08)

Axial – 2.0 (0.08)

ITEM STANDARD SERVICE LIMIT

Front Specified brake fluid DOT 3 or DOT 4 brake fluid –

Brake disc thickness 4.5 ± 0.1 (0.18 ± 0.004) 3.5 (0.14)

Brake disc warpage – 0.25 (0.01)

Master cylinder I.D. 12.700 – 12.743 (0.5000 – 0.5017) –

Master piston O.D. 12.657 – 12.684 (0.4983 – 0.4994) –

Caliper cylinder I.D. 25.400 – 25.450 (1.0000 – 1.0020) –

Caliper piston O.D. 25.318 – 25.368 (0.9968 – 0.9987) –

24-7

dummyheaddummyhead

CBF125S-J/K ADDENDUM

BATTERY/CHARGING SYSTEM SPECIFICATIONS

LIGHTS/METER/SWITCHES SPECIFICATIONS

TORQUE VALUES

ENGINE & FRAME TORQUE VALUES

FRAME/BODY PANELS/EXHAUST SYSTEM

MAINTENANCE

FUEL SYSTEM

FRONT WHEEL/SUSPENSION/STEERING

REAR WHEEL/BRAKE/SUSPENSION

BRAKE SYSTEM

ITEM SPECIFICATIONS

Alternator Capacity 0.12 kW/5,000 min

-1

(rpm)

ITEM SPECIFICATION

Bulbs Neutral indicator 12 V - 3.4 W

License light 12 V - 5 W

ITEM Q'TY THREAD TORQUE REMARKS

DIA. (mm) N·m (kgf·m, lbf·ft)

Side cover mounting screw

(6 x 17 mm)

2 6 5 (0.5, 3.7)

Front fender mounting bolt 4 6 10 (1.0, 7)

Shroud mounting bolt 4 6 5 (0.5, 3.7)

Rear center cowl mounting screw 2 5 4.3 (0.4, 3.2)

Exhaust pipe mounting nut 2 8 26 (2.7, 19)

ITEM Q'TY THREAD TORQUE REMARKS

DIA. (mm) N·m (kgf·m, lbf·ft)

Air cleaner case cover screw 4 5 1.2 (0.1, 0.9)

ITEM Q'TY THREAD TORQUE REMARKS

DIA. (mm) N·m (kgf·m, lbf·ft)

Fuel unit mounting nut 4 6 10 (1.0, 7)

ITEM Q'TY THREAD TORQUE REMARKS

DIA. (mm) N·m (kgf·m, lbf·ft)

Clutch lever pivot nut 1 6 12 (1.2, 9)

Front brake disc mounting bolt 6 8 42 (4.3, 31) ALOC bolt; replace with a new one.

ITEM Q'TY THREAD TORQUE REMARKS

DIA. (mm) N·m (kgf·m, lbf·ft)

Driven sprocket nut 4 10 65 (6.6, 48) Self lock nut

ITEM Q'TY THREAD TORQUE REMARKS

DIA. (mm) N·m (kgf·m, lbf·ft)

Caliper bleed valve 1 8 8 (0.8, 5.9)

Master cylinder reservoir cap screw 2 4 1.5 (0.2, 1.1)

Master cylinder holder bolt 2 6 12 (1.2, 9)

Brake caliper mounting bolt 2 8 26 (2.7, 19) ALOC bolt: replace with a new one.

Front brake light switch screw 1 4 1.2(0.1, 0.9)

Brake lever pivot bolt 1 6 1.0 (0.1, 0.7)

Brake lever pivot nut 1 6 6 (0.6, 4.4)

Brake hose oil bolt 2 10 34 (3.5, 25)

Brake caliper slide pin 2 8 18 (1.8, 13) Apply locking agent to the threads.

Pad pin 2 10 18 (1.8, 13)

Pad pin plug 2 10 2.5 (0.3, 1.8)

24-8

dummyheaddummyhead

CBF125S-J/K ADDENDUM

BATTERY/CHARGING SYSTEM

LIGHTS/METER/SWITCHES

LUBRICATION & SEAL POINTS

FRAME

ITEM Q'TY THREAD TORQUE REMARKS

DIA. (mm) N·m (kgf·m, lbf·ft)

Battery holder bolt 1 6 5.8 (0.6, 4.3)

ITEM Q'TY THREAD TORQUE REMARKS

DIA. (mm) N·m (kgf·m, lbf·ft)

Headlight aiming bolt 1 4 1.8 (0.2, 1.3)

Combination meter mounting screw 4 5 1.2 (0.1, 0.9)

Turn signal light lens mounting

screw

4 4 0.98 (0.1, 0.7)

Taillight lens mounting screw 2 4 0.85 (0.1, 0.6)

License light mounting nut 2 4 0.98 (0.1, 0.7)

MATERIAL LOCATION REMARKS

Silicone grease Front brake lever pivot sliding portion

Front brake lever-to-master piston contacting area

Caliper bracket pin boot

Brake caliper dust seal

DOT 3 or DOT 4 brake fluid Master cylinder piston cups

Brake caliper piston

Brake caliper piston seal

24-9

dummyheaddummyhead

CBF125S-J/K ADDENDUM

CABLE & HARNESS ROUTING

FRONT BRAKE HOSE

MAIN WIRE HARNESS

STARTER SWITCH WIRE

THROTTLE CABLE

FRONT BRAKE LIGHT

SWITCH WIRE

CLUTCH CABLE

LEFT HANDLEBAR

SWITCH WIRE

IGNITION SWITCH WIRE

SPEEDOMETER WIRE

THROTTLE CABLE

FRONT BRAKE HOSE

STARTER SWITCH WIRE

CLUTCH CABLE

LEFT HANDLEBAR

SWITCH WIRE

FRONT BRAKE LIGHT

SWITCH WIRE

24-10

dummyheaddummyhead

CBF125S-J/K ADDENDUM

CLUTCH SWITCH WIRE

RIGHT FRONT TURN

SIGNAL LIGHT WIRE

CLUTCH CABLE

LEFT FRONT TURN

SIGNAL LIGHT WIRE

THROTTLE CABLE

COMBINATION METER

SUB HARNESS

COMBINATION METER

LEFT HANDLEBAR

SWITCH WIRE

Align the edge of the lever holder with

the punch mark on the handlebar.

FRONT BRAKE HOSE

MAIN WIRE HARNESS

FRONT BRAKE LIGHT

SWITCH WIRE

STARTER SWITCH WIRE

POSITION LIGHT WIRE

(To HEADLIGHT)

IGNITION SWITCH WIRE

SPEEDOMETER WIRE

COMBINATION METER

LEFT HANDLEBAR

SWITCH WIRE

MAIN WIRE HARNESS

24-11

dummyheaddummyhead

CBF125S-J/K ADDENDUM

MAIN WIRE HARNESS

30 – 40°

Contact.

FRONT BRAKE HOSE

FRONT BRAKE LIGHT

SWITCH WIRE

THROTTLE CABLE

STARTER SWITCH WIRE

Contact.

(CL type only)

1 – 3 mm

(0.04 – 0.1 in)

24-12

dummyheaddummyhead

CBF125S-J/K ADDENDUM

THROTTLE CABLE

SPEEDOMETER CABLE

CLUTCH CABLE

LEFT HANDLEBAR

SWITCH WIRE

SPEEDOMETER CABLE

FRONT BRAKE HOSE

MAIN WIRE HARNESS

24-13

dummyheaddummyhead

CBF125S-J/K ADDENDUM

REAR BRAKE LIGHT

SWITCH WIRE

STARTER MOTOR CABLE

SPARK PLUG WIRE

FUEL HOSE

BATTERY NEGATIVE

(–) CABLE

GEAR POSITION

SWITCH WIRE

ALTERNATOR/IGNITION

PULSE GENERATOR WIRE

TURN SIGNAL LIGHT

RELAY WIRE

IGNITION COIL WIRE

📥 ¿Necesitas el PDF Original?

¿Te vas a quedar a medias con el diagnóstico?

Llévate este manual + La Biblioteca VIP Completa