1987 Honda CBR 1000 Service Manual

The 1987 Honda CBR 1000 is a high-performance sport motorcycle featuring a 998cc liquid-cooled inline-four engine, 16-valve DOHC configuration, 6-speed transmission, aluminum frame, anti-dive front forks, Pro-Link rear suspension, dual disc front brakes, and comprehensive instrumentation. This manual covers maintenance procedures, specifications, troubleshooting, and repair guidelines for proper servicing of your CBR 1000.

1. General Information 2. Maintenance Schedule 3. Engine Service 4. Chassis Specifications 5. Fuel System 6. Electrical System 7. Transmission 8. Brake System 9. Suspension 10. Troubleshooting

General Information

Key components: 998cc inline-four engine, aluminum diamond frame, digital instrumentation, anti-dive front suspension, Pro-Link rear suspension.

Component	Specification
Engine Type	Liquid-cooled 4-stroke 16-valve DOHC inline-four
Displacement	998cc
Bore x Stroke	77.0 x 53.6mm
Compression Ratio	10.5:1
Fuel System	Four 34mm Keihin CV carburetors
Ignition System	Computer-controlled digital with electronic advance
Starter	Electric
Transmission	6-speed constant mesh
Final Drive	#530 O-ring chain

Maintenance Schedule

Regular maintenance intervals for optimal performance and longevity.

Every 600 miles/1000 km: Check engine oil level, tire pressure, chain adjustment.
Every 4000 miles/6000 km: Change engine oil and filter, check valve clearance.
Every 8000 miles/12000 km: Replace air filter, spark plugs, check carburetor sync.
Every 16000 miles/24000 km: Replace coolant, brake fluid, check wheel bearings.

WARNING! Always use genuine Honda parts and recommended lubricants. Work on level surface with proper tools.

Engine Service

Engine maintenance procedures and specifications.

Oil Change: Drain oil when warm, replace with 10W-40 motorcycle oil (3.7L capacity).
Valve Clearance: Intake 0.15mm, Exhaust 0.20mm (check cold).
Spark Plugs: NGK CR8EH-9 or equivalent, gap 0.8-0.9mm.
Coolant: Use ethylene glycol antifreeze, capacity 3.0L.

CAUTION! Allow engine to cool before servicing. Torque cylinder head bolts to 30 Nm in proper sequence.

Chassis Specifications

Frame Type: Aluminum diamond frame with steel swingarm pivot.
Front Suspension: 41mm air-assisted forks with anti-dive, 130mm travel.
Rear Suspension: Pro-Link single shock, 5-way preload adjustment, 110mm travel.
Front Brakes: Dual 276mm discs with twin-piston calipers.
Rear Brake: Single 256mm disc with single-piston caliper.
Front Tire: 120/80VR16
Rear Tire: 150/80VR16
Wheelbase: 1495mm
Seat Height: 780mm
Dry Weight: 223kg

Fuel System

Carburetor maintenance and fuel system specifications.

Carburetors: Four Keihin 34mm constant velocity carburetors with accelerator pump.

Main Jet: #115, Pilot Jet: #38, Needle Jet: 5DL14-3, Float Height: 12.5mm, Idle Speed: 1100 ± 100 rpm, Sync Pressure: 20-25 cmHg at 1100 rpm.

Fuel Tank Capacity: 22L (including 4L reserve), Fuel Type: Premium unleaded (91 RON or higher).

Electrical System

Battery: 12V 10Ah (YT12A-BS), Charging System: Three-phase AC generator, 350W at 5000 rpm.

Battery Maintenance: Check electrolyte level monthly, specific gravity 1.28 at 20°C.
Fuses: Main 30A, Headlight 15A, Signal 10A, Ignition 10A.
Bulbs: Headlight 60/55W H4, Brake/Tail 21/5W, Turn Signal 21W.

Tip: Disconnect battery negative terminal first when performing electrical work.

Transmission

6-speed constant mesh transmission with wet multi-plate clutch.

Clutch Adjustment: Free play 10-20mm at lever end.
Gear Ratios: 1st 2.571, 2nd 1.777, 3rd 1.380, 4th 1.166, 5th 1.035, 6th 0.935.
Primary Reduction: 1.719, Final Reduction: 2.466.
Chain Adjustment: 25-35mm free play at midpoint between sprockets.

WARNING! Use only recommended transmission oil. Over-tightening chain causes premature wear.

Brake System

Hydraulic disc brakes front and rear with integrated braking system.

Front Brake Pads: Wear limit 1.5mm, Rear Brake Pads: Wear limit 1.5mm

Brake Fluid: DOT 4, Front Master Cylinder: 14mm, Rear Master Cylinder: 14mm

Brake Bleeding Sequence: Right front caliper, left front caliper, rear caliper.

Suspension

Front fork oil: 10W, capacity 486ml per leg, air pressure 0-6 psi.

Rear shock preload: 5-position adjustable, rebound damping: 4-position adjustable.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Hard starting	Weak battery, clogged carbs	Check battery voltage, clean carburetors, verify choke operation.
Poor idle	Dirty air filter, sync needed	Replace air filter, synchronize carburetors, adjust idle mixture.
Oil consumption	Worn valve seals, rings	Check compression, inspect valve guides, replace as needed.
Brake fade	Contaminated fluid, worn pads	Replace brake fluid, install new brake pads, clean rotors.
Chain noise	Improper tension, worn sprockets	Adjust chain tension, replace chain and sprockets as set.

Technical Support: Contact authorized Honda dealer for complex repairs.

Parts: Use genuine Honda parts for optimal performance and reliability.