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Honda ST Series User Manual

Honda ST Series
49 pages
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HONDA
ST50•70
CT70
.
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Honda ST Series Specifications

General IconGeneral
ManufacturerHonda
Transmission5-speed manual
Final DriveShaft
BrakesHydraulic disc
Fuel SystemProgrammed Fuel Injection (PGM-FI)
Front Suspension45mm fork
Front Tire130/70R-18
Rear Tire170/60R-17

Summary

Specifications

1.1 Specification

Details technical specifications for different models including dimensions, engine, and performance.

Special Tools

Engine

3.1 Engine Removal and Installation

Step-by-step guide for removing and installing the engine, including pre-checks and post-installation notes.

3.2 Lubrication System

Explains the engine oil flow and details disassembly, inspection, and reassembly of the oil pump.

3.3 Cylinder and Cylinder Head

Describes the cylinder head and cylinder construction, and provides detailed steps for disassembly and inspection.

3.4 Cam Chain Tensioner

Explains the function of the cam chain tensioner and the procedure for inspecting its check valve and guide rollers.

3.5 Piston and Piston Rings

Details the piston and piston rings material, and outlines disassembly, inspection methods, and reassembly procedures.

3.6 Clutch

Describes the wet type clutch operation and provides steps for disassembly, inspection, adjustment, and reassembly.

3.7 Crankshaft

Explains the crankshaft's role and lubrication, detailing disassembly, inspection, and reassembly.

3.8 Transmission

Describes the 3-speed transmission, its power train, and provides steps for disassembly, inspection, and reassembly.

3.9 Gear Shift Mechanism

Explains how the gear shift mechanism operates and details disassembly, inspection, and reassembly.

3.10 Kick Starter

Describes the kick starter's function and provides instructions for its assembly.

3.11 Carburetor

Explains the carburetor's function in mixing fuel and air and references specifications for different models.

3.12 Tightening Torque Limits

Provides a table of tightening torque specifications for major engine fastening points in ft-lb and kg-cm.

Frame

4.1 Handle

Details the handle construction, including its foldable design, and provides steps for disassembly and inspection.

4.2 Front Fork

Explains the front fork's steering system with ball bearings and outlines disassembly, inspection, and reassembly procedures.

4.3 Front Cushion

Describes the front cushion construction and details its disassembly, inspection of spring, and reassembly.

4.4 Rear Cushion

Explains the rear cushion's construction and function, detailing its disassembly, inspection, and reassembly.

4.5 Front Wheel

Describes the front wheel construction and details disassembly, inspection of brake drum and shoe, and reassembly.

4.6 Rear Wheel

Details the rear wheel construction, disassembly, inspection of brake drum and shoe, and reassembly.

4.7 Braking System

Explains the outward expanding braking system and provides steps for disassembly, inspection, and reassembly.

4.8 Rear Fork

Describes the rear fork as a swing arm type and outlines its disassembly, inspection, and reassembly.

4.9 Drive Chain

Provides instructions for connecting, inspecting, and adjusting the drive chain, including slackness specifications.

4.10 Air Cleaner

Explains the air cleaner's function and provides instructions for its removal, cleaning, and element replacement.

Electrical System

5.1 A. C. Generator

Details the AC generator's direction of rotation and charging performance under various loads and conditions.

5.2 Inspecting sparking performance

Describes methods to test the ignition coil and AC generator's sparking performance using visual checks and resistance measurements.

5.3 Inspecting the selenium rectifier

Provides procedures to test the selenium rectifier's functionality in normal and reverse directions using a multimeter.

Wiring Diagram

Periodic Adjustment

Trouble Shooting

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