1987 Honda Spree Service Manual

The 1987 Honda Spree is a 49cc four-stroke scooter featuring automatic transmission, front and rear drum brakes, 3.8-liter fuel tank capacity, and a top speed of approximately 30 mph. This service manual covers maintenance procedures, specifications, troubleshooting, and repair guidelines for optimal performance and longevity. Below are key sections for safety, features, maintenance, specifications, operation, and troubleshooting.

1. Features at a Glance 2. Safety Precautions 3. Maintenance Schedule 4. Specifications 5. Controls and Operation 6. Engine Service 7. Fuel System 8. Electrical System 9. Brake System 10. Troubleshooting

Features at a Glance

Key components: 49cc four-stroke engine, automatic centrifugal clutch, kick start, front and rear drum brakes, 3.8L fuel tank, and compact urban design.

Feature	Description
Engine Type	49cc air-cooled four-stroke single cylinder
Transmission	Automatic centrifugal clutch
Starting System	Kick start
Brakes	Front and rear drum brakes
Fuel Capacity	3.8 liters (1.0 US gallon)
Max Power	2.5 hp @ 5500 rpm
Max Torque	3.2 Nm @ 4500 rpm
Top Speed	Approximately 30 mph (48 km/h)
Weight	58 kg (128 lbs)
Seat Height	690 mm (27.2 inches)

Safety Precautions

Always wear appropriate safety gear and follow proper procedures when servicing.

Work in a well-ventilated area when handling fuel or chemicals.
Use proper tools and torque specifications for all fasteners.
Disconnect battery before performing electrical work.
Support the scooter securely on a stand when working on wheels or brakes.

WARNING! Gasoline is highly flammable; keep away from sparks and open flames. Engine and exhaust components become extremely hot during operation.

Maintenance Schedule

Regular maintenance ensures optimal performance and extends scooter lifespan.

Engine Oil: Change every 1,000 miles or 6 months
Air Filter: Clean every 500 miles, replace every 2,000 miles
Spark Plug: Check every 1,000 miles, replace every 3,000 miles
Brake Pads: Inspect every 1,000 miles, replace as needed
Tire Pressure: Check weekly, maintain 22 psi front, 28 psi rear
Drive Belt: Inspect every 2,000 miles, replace if worn

CAUTION! Use only recommended Honda parts and fluids for optimal performance.

Specifications

Engine: 49cc four-stroke, air-cooled
Bore x Stroke: 39.0 x 41.4 mm
Compression Ratio: 7.0:1
Carburetor: 12 mm piston valve
Ignition System: CDI
Battery: 12V 3Ah
Transmission: Automatic V-belt
Frame: Steel tube underbone
Suspension: Front telescopic fork, rear swingarm
Tires: 2.50-10-4PR front and rear

Controls and Operation

Familiarize yourself with all controls before operating the scooter.

Handlebar Controls: Right handle - throttle control; Left handle - front brake lever, horn button, turn signals, headlight switch.

Instrument Panel: Speedometer, odometer, fuel gauge, indicator lights (neutral, turn signals, high beam). Starting Procedure: Ensure transmission in neutral, turn key to ON position, pull brake lever, kick start. Riding Tips: Allow engine to warm up before riding, avoid sudden acceleration, use both brakes for stopping.

Engine Service

Proper engine maintenance is crucial for performance and reliability.

Oil Change: Drain old oil, replace filter, refill with 0.6L SAE 10W-30
Spark Plug: Use NGK BPR6HS, gap 0.6-0.7mm
Valve Clearance: Intake 0.05mm, exhaust 0.08mm (check every 2,000 miles)
Compression Test: Should read 100-150 psi
Cooling System: Keep cooling fins clean and unobstructed

Tip: Always warm up engine before adjusting valves for accurate measurement.

Fuel System

The fuel system requires regular maintenance for proper operation.

Fuel Filter: Replace annually or every 2,000 miles
Carburetor Cleaning: Disassemble and clean every 2,000 miles
Fuel Lines: Inspect for cracks and replace if necessary
Air Filter: Clean with compressed air, replace if damaged
Idle Speed Adjustment: Set to 1700 ± 100 rpm when engine warm

WARNING! Gasoline is highly flammable. Work in well-ventilated area away from ignition sources.

Electrical System

Maintain proper electrical system function for reliable starting and operation.

Battery: 12V 3Ah, maintain fluid level, keep terminals clean. Charging System: Stator output 0.1-0.2 ohms, regulator/rectifier check voltage output. Lighting: Headlight 25W/25W, taillight 8W, turn signals 10W. Fuses: Main fuse 10A located near battery.

Brake System

Proper brake maintenance ensures safe stopping performance.

Front Brake: 95mm drum, adjust cable tension for proper lever feel. Rear Brake: 95mm drum, adjust via rear brake lever. Brake Shoes: Replace when lining thickness less than 1.5mm. Brake Cables: Lubricate periodically, replace if frayed or damaged.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Engine won't start	Fuel, spark, or compression issue	Check fuel level, spark plug, compression, carburetor
Poor acceleration	Clutch, belt, or carburetor	Inspect drive belt, clutch springs, clean carburetor
Electrical failure	Battery, fuse, or wiring	Test battery voltage, check fuses, inspect wiring
Brakes not effective	Worn pads or adjustment	Inspect brake shoes, adjust cable tension
Overheating	Cooling or lubrication	Check oil level, clean cooling fins, verify proper mixture

Service: For technical assistance contact Honda customer service or authorized dealer.