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Honda Forza 250 Service Manual

Honda Forza 250
401 pages
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Table of Contents

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Honda Forza 250 Specifications

General IconGeneral
Displacement249cc
Front BrakeSingle disc
Rear BrakeSingle disc
Fuel Tank Capacity11.5 liters
Seat Height780 mm
Fuel SystemPGM-FI (Programmed Fuel Injection)
Starter SystemElectric
Frame TypeUnderbone
Engine TypeLiquid-cooled, 4-stroke, single-cylinder
TransmissionAutomatic
Front SuspensionTelescopic fork
Front Tire120/70-15
Rear Tire140/70-14
Rear SuspensionTwin shock absorbers
Ignition SystemFull transistorized ignition
Length x Width x Height2, 140 x 755 x 1, 470 mm

Summary

SYMBOLS

GENERAL INFORMATION

SERVICE INFORMATION

General service procedures and notes for the manual.

SPECIFICATIONS

Detailed technical specifications for the scooter models.

TORQUE VALUES

Essential torque specifications for assembly and maintenance.

TOOLS

List of special tools required for service procedures.

FRAME/BODY PANELS/EXHAUST SYSTEM

BODY PANEL LOCATIONS & REMOVAL CHART

Diagrams and chart for body panel identification and removal sequence.

TRIM CLIP REMOVAL/INSTALLATION

Procedures for removing and installing trim clips.

SEAT & FLOOR SKIRT REMOVAL/INSTALLATION

Steps for removing and installing seat and floor skirt.

MUFFLER REMOVAL/INSTALLATION

Steps for removing and installing the exhaust muffler.

MAINTENANCE

SERVICE INFORMATION

General notes and cautions for maintenance procedures.

SPECIFICATIONS

Key specifications relevant to maintenance tasks.

TORQUE VALUES

Specific torque values for maintenance-related fasteners.

ENGINE OIL CHANGE

Procedures for checking and changing the engine oil.

LUBRICATION SYSTEM

LUBRICATION SYSTEM DIAGRAM

Diagram illustrating the lubrication system oil flow path.

SPECIFICATIONS

Specifications for engine oil capacity and pump clearances.

OIL PUMP REMOVAL/INSPECTION

Procedures for oil pump removal, inspection, and assembly.

FUEL SYSTEM

SERVICE INFORMATION

General notes and cautions for fuel system service.

CARBURETOR REMOVAL/DISASSEMBLY

Step-by-step guide for carburetor removal and disassembly.

FUEL TANK INSPECTION/REMOVAL

Procedures for fuel tank inspection and removal.

COOLING SYSTEM

SYSTEM FLOW PATTERN

Diagram showing the coolant flow path through the system.

SPECIFICATIONS

Specifications for coolant capacity and antifreeze.

COOLANT REPLACEMENT

Steps for draining, filling, and bleeding the cooling system.

ENGINE REMOVAL/INSTALLATION

ENGINE REMOVAL

Detailed steps for removing the engine from the frame.

ENGINE INSTALLATION

Procedures for installing the engine back into the frame.

ENGINE HANGER BRACKET

Removal, disassembly, and installation of the engine hanger bracket.

CYLINDER HEAD/VALVES

CYLINDER COMPRESSION TEST

Procedure for performing a cylinder compression test.

CYLINDER HEAD REMOVAL

Steps for removing the cylinder head assembly.

VALVE SEAT INSPECTION/REFACING

Inspection and refacing procedures for valve seats.

CYLINDER/PISTON

SPECIFICATIONS

Specifications for cylinder, piston, and rings.

CYLINDER/PISTON REMOVAL

Procedures for removing the cylinder and piston.

INSPECTION

Inspection procedures for piston rings, piston pin, and cylinder.

DRIVE PULLEY/DRIVEN PULLEY/CLUTCH

SPECIFICATIONS

Specifications for clutch, drive belt, and pulley components.

DRIVE BELT INSPECTION

Procedures for inspecting the drive belt for wear and damage.

CLUTCH ASSEMBLY/DISASSEMBLY

Procedures for clutch assembly and disassembly.

FINAL REDUCTION

SPECIFICATIONS

Specifications for final reduction oil capacity.

FINAL REDUCTION DISASSEMBLY

Procedures for disassembling the final reduction unit.

BEARING REPLACEMENT

Procedures for replacing bearings in the final reduction.

ALTERNATOR/STARTER CLUTCH

SPECIFICATIONS

Specifications for starter driven gear and clutch outer.

ALTERNATOR STATOR REMOVAL/INSTALLATION

Procedures for alternator stator removal and installation.

FLYWHEEL/STARTER CLUTCH REMOVAL/DISASSEMBLY

Procedures for flywheel/starter clutch removal and disassembly.

CRANKSHAFT/CRANKCASE

SPECIFICATIONS

Specifications for crankshaft connecting rod and runout.

CRANKCASE SEPARATION

Procedures for separating the crankcase halves.

CRANKSHAFT INSPECTION

Inspection procedures for the crankshaft.

FRONT WHEEL/SUSPENSION/STEERING

SPECIFICATIONS

Specifications for tire tread, cold pressure, and fluid capacity.

FRONT WHEEL REMOVAL/DISASSEMBLY

Procedures for front wheel removal and disassembly.

STEERING STEM REMOVAL/INSTALLATION

Procedures for steering stem removal and installation.

REAR WHEEL/SUSPENSION

SPECIFICATIONS

Specifications for minimum tread depth and cold tire pressure.

REAR WHEEL/SWINGARM REMOVAL

Procedures for rear wheel and swingarm removal.

REAR SHOCK ABSORBER REMOVAL/INSTALLATION

Procedures for rear shock absorber removal and installation.

HYDRAULIC BRAKE

SPECIFICATIONS

Specifications for brake fluid, caliper dimensions, and pad thickness.

BRAKE FLUID REPLACEMENT/AIR BLEEDING

Procedures for replacing brake fluid and bleeding the system.

BRAKE PAD/DISC INSPECTION

Inspection procedures for brake pads and discs.

FRONT MASTER CYLINDER REMOVAL/ASSEMBLY

Procedures for front master cylinder removal and assembly.

BATTERY/CHARGING SYSTEM

SERVICE INFORMATION

General notes and cautions for battery and charging system.

BATTERY TESTING

Procedures for testing the battery's condition and charge.

CHARGING SYSTEM INSPECTION

Procedures for inspecting the charging system's operation.

IGNITION SYSTEM

SERVICE INFORMATION

General notes and cautions for ignition system service.

TROUBLESHOOTING

Troubleshooting guide for common ignition system issues.

IGNITION COIL PRIMARY PEAK VOLTAGE

Procedure for testing ignition coil primary voltage.

ELECTRIC STARTER

SERVICE INFORMATION

General notes and cautions for starter system service.

TROUBLESHOOTING

Troubleshooting flow chart for starter motor and relay issues.

STARTER MOTOR REMOVAL/DISASSEMBLY

Procedures for starter motor removal and disassembly.

LIGHTS/METERS/SWITCHES

SERVICE INFORMATION

General notes for lights, meters, and switches.

BULB REPLACEMENT

Procedures for replacing various bulbs.

COMBINATION METER INSPECTION/DISASSEMBLY

Inspection and disassembly of the combination meter.

FUEL GAUGE/FUEL LEVEL SENSOR

Inspection of fuel gauge and level sensor.

ABS (Anti-lock Brake System)

SERVICE INFORMATION

General information about the ABS system operation and diagnosis.

SELF-DIAGNOSIS PROCEDURE

Steps for diagnosing ABS system faults via indicator lights.

ABS INDICATOR FAILURE CODE

Table listing ABS indicator blink codes and their causes.

ABS MODULATOR REMOVAL/INSTALLATION

Procedures for ABS modulator removal and installation.

WIRING DIAGRAMS

TECHNICAL FEATURES

AUTO ADJUST BRAKE LOCK REAR CALIPER

Summary and construction of the auto-adjust brake lock caliper.

PARKING BRAKE MECHANISM

Explanation of the parking brake mechanism's operation.

ABS (Anti-lock Brake System) SUMMARY

Summary of the ABS system's function and components.

TROUBLESHOOTING

ENGINE DOES NOT START OR IS HARD TO START

Troubleshooting steps for engine starting issues.

ENGINE LACKS POWER

Troubleshooting steps for engine power loss.

POOR PERFORMANCE AT LOW AND IDLE SPEEDS

Troubleshooting steps for low speed performance issues.

INDEX

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