Keeway Hurricane 50/90 Scooter Factory Service Manual – 2006

February 2006 Keeway International Development Co., Ltd. service and maintenance manual for the Hurricane, identified in the PDF document title as HURRICANE 50-90CC. The printed engine specifications describe the 50 configuration; a separate 90-specific engine specification section is not included. Keeway notes that market-specific scooters may differ from the standard specification.

PDF Search, Diagram Detail, and Page Count

Search and diagram access: Main text and specification tables are searchable, but some labels embedded in illustrations are not. There are no embedded PDF bookmarks. The full wiring diagram has very faint lines and small wire-color labels that remain difficult to read in places when enlarged.

The ZIP contains one printable, 115-page PDF, including four introductory pages: the original cover, manufacturer contact page, preface, and index.

Two-Stroke Engine, V-Belt Drive, and Electrical Service

These selected coverage highlights outline the main workshop sections. Additional material includes body-panel removal and illustrated wire, cable, and brake-hose routing.

• Periodic maintenance: Scheduled inspections, cylinder decarbonizing, air-cleaner service, throttle and oil-pump adjustment, lubrication points, and chassis fastener checks.

• Internal engine repair: Step-by-step disassembly and reassembly procedures, crankcase separation, crankshaft installation, bearing and oil-seal replacement, and piston, cylinder, and reed-valve inspection.

• Automatic transmission: Clutch engagement and lock-up testing, V-belt inspection, movable drive and driven-face service, final reduction gearing, and kick-start components.

• Fuel and lubrication: Vacuum-operated fuel-switch operation, PZ19JB carburetor specifications, fuel-system troubleshooting, CCI oil-pump adjustment, and oil-line bleeding guidance.

• Electrical diagnosis: CDI/ignition-coil testing, magneto and regulator/rectifier checks, starter-motor and relay inspection, fuel-gauge tests, and switch continuity charts.

• Brakes and chassis: Front caliper and master-cylinder repair, hydraulic bleeding, rear drum-brake service, wheel-bearing inspection, and steering-stem and front-suspension work.

This manual is suited to mechanics and experienced owners familiar with scooter service, electrical testing, and precision measurement; internal engine and clutch work requires the specified workshop tools.

Maintenance Planning and Machine Identification

The periodic maintenance section runs from the initial 1,000 km/600-mile inspection through 24,000 km/15,000 miles. It covers spark plugs, cylinder-head and exhaust fasteners, fuel lines, gear oil, brakes, steering, suspension, tires, and chassis lubrication.

Brake fluid is scheduled for replacement every two years and brake hoses every four years. Air-cleaner cleaning is specified every 3,000 km/2,000 miles.

Identification illustrations show the frame/VIN marking on the steering tube and the engine-number marking on the rear crankcase for registration and parts ordering.

Engine Rebuilding and Drive Assembly

Engine repair coverage extends to crankshaft and connecting-rod inspection, cylinder and piston measurement, piston-ring checks, mounting bushings, rear axle components, starter pinion service, intake-pipe installation, and magneto removal and installation. A separate list identifies components that can be serviced with the engine still in the frame.

The transmission sections distinguish clutch engagement from full lock-up testing with a tachometer. The service-data tables list a 2.64–0.86 variable ratio and an 11.076 final reduction ratio.

The kick-starter nut has a left-hand thread. Keeway also warns that disassembling the clutch shoe assembly can damage the shoes, and hammering the crankshaft into the crankcase can disturb crankshaft alignment.

Workshop equipment: Listed tools include the T03 flywheel remover, T07 cylinder pressure gauge, T08 piston pin remover, T09 spark plug remover, T10 flywheel lockbolt remover, sleeve-tool sets, and a clutch clamp. Steering-stem work specifies universal tightening wrench 09910-60611. Reassembly notes identify KEEWAY No. 1215 sealing compound and designated thread-lock products.

Carburetor and CCI Lubrication

The carburetor section identifies the KEEWAY-WENLING PZ19JB, with a 19 mm throat, #80 main jet, #57.5 pilot jet, third-groove needle position, and 13 ± 1 mm float height. It provides an exploded view, settings, and troubleshooting references rather than a full step-by-step carburetor overhaul procedure.

Oil-pump material explains throttle-linked delivery, control-mark adjustment, installation, and bleeding when air enters the oil line. These references connect fuel and lubrication faults with the starting, smoke, power-loss, and overheating complaints covered in the troubleshooting charts.

Specification differences: Some procedure-page values differ from the summary tables, including clutch, ignition, and fastener data. Lubricant recommendations also differ: the service-data table names GL-5 85W/90 gear oil, while the gearbox reassembly section calls for engine oil. These differences require attention before applying specifications to a particular scooter.

Electrical Tests and Circuit References

Electrical diagnosis covers the flywheel magneto, combined CDI/ignition-coil unit, spark testing, exciting coil, charging and lighting circuits, regulator/rectifier, starter motor, starter relay, fuel-level sender, oil-level warning circuit, switches, and battery servicing. The battery chapter identifies a YB4L-B.

The charging-output procedure specifies 13–16 V at 5,000 rpm with the lighting switch on and the battery fully charged. Starter inspection includes a 3.5 mm brush service limit and an 80–150 ohm relay-coil resistance specification.

Named illustrations include the Ignition System circuit, Charging and Lighting System circuit, and Starter System diagram. Together with the fault charts, these support tracing a starting or charging complaint between the wiring, switches, and tested components.

Wiring-diagram identification: The full Wiring Diagram is labeled “ZIP.” Compare its component and connector arrangement with the scooter’s actual wiring before relying on it.

Brake, Wheel, and Steering Repairs

Chassis sections cover front-wheel bearings, axle and rim inspection, front disc-brake pads, caliper and master-cylinder disassembly and reassembly, steering bearings, front suspension, rear wheel, brake shoes, and the rear brake cam.

The Front Brake System and Steering Stem and Front Suspension exploded views show assembly relationships. Rear-brake instructions warn that excess camshaft grease can contaminate the lining and reduce braking effectiveness.

Brake hydraulic work and running drivetrain/electrical tests involve brake fluid, rotating parts, and live measurements. The scooter should be securely supported and the manual's cautions followed before disassembly or test work.

Preview of Engine Wear Limits and Oil-Pump Data

For internal engine inspection, the manual gives a 0.05 mm crankshaft runout limit and a 14.040 mm connecting-rod small-end inside-diameter limit. Piston-to-cylinder clearance is listed at 0.06–0.07 mm, with a 0.120 mm service limit.

The CCI pump specification gives full-open delivery of 1.1–1.3 mL per five minutes at a working pressure of 0.06 MPa and a pump speed of 118 rpm. These are selected inspection and test references, not a complete service specification.