Grom 125 Service Manual Repair 2014 Grom125 MX125

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Type: Motorcycle

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Sku: 151479

Tags: 2014 Grom Grom125 Honda Motorcycle Motorcycles MX125

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Description

The 2014 Grom, model code MSX125 (JC61), is a compact sport motorcycle renowned for its unique styling, agility, and fun-to-ride character. Designed for urban commuting and recreational riding, this lightweight machine boasts a 125cc air-cooled engine, a 4-speed sequential transmission, and efficient disc brakes. Its compact dimensions, including a 1,755 mm length and 1,200 mm wheelbase, make it highly maneuverable, while its approximately 100 kg wet weight contributes to its accessible nature. The Grom's appeal lies in its customizability and affordability, making it a popular choice for enthusiasts and new riders alike. This comprehensive service manual provides in-depth guidance for maintaining and repairing the 2014 Grom 125, applicable to newer models as well. Covering a wide array of systems, including detailed engine service, fuel systems, drivetrain, chassis, electrical components, and braking systems, this 264-page English document is an essential resource. It includes step-by-step repair instructions, troubleshooting procedures for common issues, and technical specifications, supported by detailed diagrams and illustrations. This manual empowers owners and technicians to perform scheduled maintenance, diagnostics, and repairs effectively, ensuring optimal performance and longevity of the vehicle.

🏷️ Basic Information

Identification

Make:

Honda

Model:

Model Code:

MSX125 (Grom)

Year:

Codes

Chassis Code:

👋 Introduction

Market Position

Segment:

Compact sport motorcycle / mini-bike

Target Audience:

Enthusiasts, DIY mechanics, new riders, city commuters

Competitive Analysis

Competitors:

Kawasaki Z125 Pro, KTM 125 Duke (though often in a slightly different niche)

Key Features

Vehicle Appeal:

Compact size, lightweight, fuel efficiency, fun factor, customizability, affordability

Manual Value Proposition

Benefit To Owner:

Empowers owners to perform their own maintenance and repairs, saving money and ensuring proper upkeep.

Seller Service:

Offers free manual replacement if lost.

📋 Manual Details

Coverage Areas

Primary Coverage:

2014 Honda Grom 125 (MSX125)

Secondary Coverage Note:

Applicable to newer Grom 125 models

Page Count

Page Count:

Manual Type

Type:

Service Manual / Repair Manual

Language

Language:

English

Format

Format:

Digital (PDF)

📖 Manual Coverage

Systems Covered

Engine Service:

Complete tear down and rebuild, valve clearance adjustment, piston, conrod, crank, cylinder head, lubrication, mixture screw, spark plug replacement, ignition system, starter system, fuel system.

Fuel System Service:

Carburetor (Carburettor) operation, jetting (main jet, pilot jet/slow jet), fuel pump, PGM-FI (Programmed Fuel Injection) for later models, fuel tank, fuel lines.

Drivetrain Service:

Transmission (4-speed sequential), primary reduction gear, clutch operation, clutch cable adjustment, rear wheel drive, drive shaft, drive train, swingarm, rear suspension linkage.

Chassis And Body:

Frame, forks (front suspension), front forks, rear shock absorber (spring), handlebars, seat, plastics, body panels, fenders, exhaust system, muffler.

Electrical System:

Battery charging system, rectifier, stator, flywheel, ignition coil, switches (light switch, starter switch), wiring diagrams, error codes, no spark troubleshooting, ECU (for EFI models).

Braking System:

Front and rear brakes (disc brakes), brake pads, brake calipers, brake fluid, bleeding procedures.

Wheels And Tires:

Tire specifications, tire pressure, wheel replacement, wheel bearings.

Procedures Included

Maintenance:

Scheduled maintenance, oil change (engine oil type and viscosity recommendations), coolant change, chain adjustment, brake inspection, air filter cleaning/replacement.

Troubleshooting:

Diagnostic procedures for common problems, error code interpretation, starting issues, running problems, electrical faults, no spark diagnosis.

Repair:

Step-by-step repair instructions for all major components and systems, including engine rebuilds, transmission overhauls, suspension repairs, and electrical component replacement.

Installation:

Instructions for installing aftermarket parts (where applicable) and genuine Honda parts.

Technical Depth

Depth:

Comprehensive, covering from basic maintenance to complete engine rebuilds and in-depth electrical diagnostics.

Visual Aids

Diagrams:

Includes detailed part diagrams, exploded views, and system schematics.

Illustrations:

Features numerous pictures and illustrations to guide repair procedures.

📊 Manual Specifications

File Format

Format:

Searchability:

Searchable text content

Print Quality

Print Restriction:

No restrictions on printing

Binding Type

Binding:

N/A (Digital Download)

Paper Type

Paper:

N/A (Digital Download)

File Management

Saving Capability:

Allowed (saving/burning to disc)

⚙️ Engine Specifications

Primary Engine

Type:

Air-cooled, four-stroke, SOHC, 2-valve single-cylinder

Displacement:

125 cc (124.9 cc)

Bore X Stroke:

52.4 mm x 57.9 mm

Compression Ratio:

9.3:1

Performance

Horsepower Approx:

Approximately 9.6 hp @ 7,000 rpm (varies slightly by region)

Torque Approx:

Approximately 7.7 lb-ft @ 5,000 rpm (varies slightly by region)

Fuel System

Carbureted Model:

Keihin VK12A 24mm carburetor (for 2014 model)

Efi Note:

Later models feature PGM-FI (Programmed Fuel Injection).

Lubrication

Oil Type:

SAE 10W-30 API SG or higher (check manual for exact specification)

Oil Capacity W Filter:

0.95 L (1.0 US qt)

Cooling System

Type:

Air-cooled

🔧 Transmission

Standard

Type:

Constant-mesh 4-speed sequential

Features

Clutch Type:

Wet, multiple-disc, manual clutch

Final Drive:

Chain drive

📐 Dimensions

Exterior

Length:

1,755 mm (69.1 in)

Width:

760 mm (29.9 in)

Height:

1,015 mm (40.0 in)

Wheelbase:

1,200 mm (47.2 in)

Weights

Wet Weight:

Approximately 100 kg (220 lbs)

Seat Height:

765 mm (30.1 in)

Capacities

Fuel Tank Capacity:

5.7 L (1.5 US gal)

🛡️ Safety Features

Ratings

Braking Performance:

Front: 220 mm hydraulic disc. Rear: 190 mm hydraulic disc.

Active Features

ABS Availability:

ABS was an optional feature on some Grom models, confirm for specific 2014 model.

Passive Features

Lighting:

Halogen headlight, LED taillight.

💡 Technology Features

Infotainment

Display Type:

Digital LCD instrument cluster (speedometer, tachometer, fuel gauge, gear indicator, clock).

Driver Assistance

Optional Anti-lock Braking System (ABS).

Lighting

Headlight Type:

Halogen (55/60W)

Taillight Type:

🔧 Maintenance

Service Intervals

Oil Change Interval:

Every 6,000 km (3,700 miles) or 6 months (refer to manual for precise intervals and conditions).

Valve Clearance Interval:

Every 12,000 km (7,500 miles) or 24 months.

Spark Plug Replacement:

Recommended at 12,000 km (7,500 miles) or as needed, depending on type (e.g., Iridium).

Fluid Specifications

Brake Fluid:

DOT 4 (check manual for specific Honda recommendation).

Coolant:

Honda recommends Pro Honda HP Coolant (or equivalent ethylene glycol-based coolant with anti-corrosion additives).

Known Issues

Common Wear Items:

Clutch plates, brake pads, tires, chain and sprockets due to their compact nature and spirited use.

Potential Complaints:

Some owners report slightly stiff clutch action or a need for more power in certain riding conditions, which aftermarket modifications often address.

📚 Vehicle History

Brand Heritage

Honda Motorcycles:

Honda is a globally renowned manufacturer with a long history of producing reliable and innovative motorcycles across all segments.

Model Evolution

Grom Introduction:

The Honda Grom (MSX125) was introduced globally in 2013 for the 2014 model year, quickly gaining popularity for its styling, size, and fun-to-ride nature.

Production

Manufacturing:

Primarily manufactured in Thailand.