Honda SH50 City Express 49cc Haynes Owners Workshop Manual 1984-1989

Description

Honda SH50 City Express 49cc Haynes Owners Workshop Manual 1984–1989

This is the Haynes Owners Workshop Manual for the Honda SH50 City Express 49cc automatic moped, covering all UK-market variants produced from 1984 to 1989. The three variants documented are the SH50-E (March 1984 to September 1986, built at Aalst, Belgium), the SH50-H (September 1986 onward, built at Barcelona, Spain), and the SH50-K (introduced mid-1989, superseding the H model). This is a complete workshop manual written for the owner-mechanic, covering everything from basic pre-ride checks and routine maintenance through to full engine and transmission overhaul, without assuming access to specialist or expensive service tools.

File Details

• Manual Type: Owners Workshop Manual
• Publisher: Haynes
• Model: Honda SH50 City Express
• Engine Capacity: 49cc (49.4 cc)
• Variants Covered: SH50-E, SH50-H, SH50-K
• Coverage Years: 1984–1989
• Language: English
• Pages: 112
• File Format: PDF

Chapters Covered

• Introductory Pages — About this manual; Introduction to the Honda SH50 City Express; Model dimensions and weights (both SH50-E and SH50-H/K); Ordering spare parts; Safety first; Tools and working facilities; Fault diagnosis; Routine maintenance
• Chapter 1 — Engine and Transmission — General description; engine/transmission unit removal and refitting; full dismantling procedures: flywheel generator, transmission cover, transmission components, final reduction gearbox, starter components, crankcase halves, crankshaft, oil seals and bearings; examination and renovation of all engine components including cylinder head, barrel, piston and rings, crankshaft, transmission components, kickstart mechanism; full reassembly sequence; starting and running the rebuilt engine; taking the rebuilt machine on the road
• Chapter 2 — Fuel System and Lubrication — Fuel tank; fuel level gauge sender; fuel tap and filters; automatic choke system; carburettor (removal, overhaul, settings adjustment); air filter; reed valve; exhaust system and decarbonising; oil tank; oil level warning circuit sender; oil tank filter; oil pump; oil pump and feed pipes bleeding
• Chapter 3 — Ignition System — CDI system general description and fault diagnosis; CDI wiring check; ignition switch testing; ignition HT coil location and testing; CDI unit location and testing; generator ignition source and pulser coils testing; HT lead and suppressor cap examination; ignition timing check
• Chapter 4 — Frame and Suspension — Front suspension: removal, examination, and renovation; handlebar; steering column; steering head bearings; steering lock; frame examination and renovation; rear suspension removal, examination, and refitting; seat and seat lock; centre stand; bodywork and fittings; speedometer/instrument panel; speedometer drive and cable
• Chapter 5 — Wheels, Brakes and Tyres — Front and rear wheel removal and refitting; wheel bearings; brakes examination and refitting; tyres removal, repair, and refitting; valve cores and caps
• Chapter 6 — Electrical System — Battery; charging system; lighting; direction indicators; horn; starter motor; switches; instruments
• Wiring Diagram
• Conversion Factors
• Index

The fault diagnosis section at the front of the manual is a practical troubleshooting resource covering starter motor problems, no-start conditions, poor running at idle and high speeds, acceleration issues, overheating, knocking, transmission noise, brake problems, poor handling, and electrical failures — organized so an owner can trace a problem before opening a spanner. The routine maintenance section gives both mileage-based and calendar-based service intervals, covering the pre-ride check, daily inspections, and periodic service tasks with the correct specifications for each.

Key Specifications Included

The manual contains detailed specification tables throughout each chapter. Engine bore is 40.0 mm (1.58 in), stroke 39.3 mm (1.55 in), giving a displacement of 49.4 cc. Compression ratio is 7:1. Maximum power is 3.1 PS at 6500 rpm; maximum torque 4.2 Nm (3.1 lbf ft) at 3500 rpm. The ignition system is CDI type, timed at 16 ± 3° BTDC at 2000 rpm. Carburettor is a PB05B-A (13 mm bore) on all variants. Fuel tank capacity is 4.50 lit (0.99 Imp gal). Engine oil tank capacity is 1.2 lit (2.1 Imp pint). Torque wrench settings, clearances, and service limits are given for every major component across all chapters.

What This Manual Enables

The Honda SH50 City Express Haynes Workshop Manual 1984–1989 gives a competent owner-mechanic everything needed to maintain and overhaul this automatic moped without dealer dependency. Whether the job is a routine plug change and carburettor clean, a drive belt and clutch shoe renewal, a full piston and barrel replacement, or tracing an electrical fault through the CDI system, the step-by-step procedures, photographs, and line drawings in this manual guide the work from start to finish. The SH50-E and SH50-H/K variants are distinguished where they differ — in spark plug type, port timing, rear suspension travel, frame numbers, and other variant-specific details — so owners of either model are not left navigating information that doesn’t apply to their machine.

Download this PDF instantly after purchase — no shipping, no waiting. Open it on any device, zoom into any diagram or photograph, and print the pages you need for the workshop. Having the correct torque settings, clearances, and adjustment procedures to hand before starting a job makes the difference between a clean repair and a costly mistake.