1984-1986 Suzuki GSX-R400 Service Manual (245 P.)

Technician-level documentation for engine overhaul, transmission rebuild, chassis service: liquid-cooled DOHC, TSCC combustion, anti-dive suspension, complete ignition diagnostics. AISAN carburetors, electronic cooling fan control.

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Document Details

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Document Number / Seller:
23557 / Carol Parker
File Size:
22.47 MB
File Type:
PDF
Language:
English
Pages:
245
Printable:
Yes
Category:
Motorbike
Last updated / verified
Feb 4, 2026

Models Covered & Key Technical Specifications

Suzuki GSX-R400 (GK71B) — 1984–1986 Functional Resource Documentation | GSX-R400 Series Unit.

  • Maximum Physical Specs: 398 cm³ is designed for the engine piston displacement Bounds.
  • Authorized Resolution Data: For optimal combustion efficiency, 11.3:1 delivers the cylinder compression ratio Topology.
  • Established Tension Specs: 2 185 ml requires the cooling system solution capacity Matrix.
  • Measured Holding Capacity: Engine oil volume is configured at 3 000 ml per service Standards.
  • Critical Load Capacity: Dry mass is measured at 157 kg for the complete motorcycle Margin.
  • Rated Dimensional Limits: Front tire specification establishes 100/90-16 54H for safety Protocol.

Professional Workshop Service Manual & Technical Specifications

Reference-Grade Maintenance Hydraulic Manual: Motorcycle Official Suzuki GSXR400 Sport Motorcycle - Maintenance & Repair Handbook, covers 1984-1986 Calibration-Manual

Operational-Framework: GSXR400 // Application-Range: Four-cylinder, liquid-cooled sport motorcycle systems // Application-Range: Comprehensive service documentation with specifications and adjustment procedures.

Service-Nexus Baseline Logic
Engine & Transmission Complete coverage Documented with detailed component illustrations
Cooling & Electrical System architecture Specifications provided for all circuits
Suspension & Brakes Maintenance procedures Adjustment reference data included

Properly requiring examination across multiple technical domains, the document addresses general information and periodic maintenance schedules with consistent structure throughout. Timing procedures are documented for the fully transistorized ignition system, anti-dive suspension components, and the 398cc four-cylinder engine equipped with DOHC camshafts and TSCC combustion technology. Technical notes are provided for fuel system operation, covering the AISAN AS27VW twin carburetors and their variable-venturi piston design.

Quality checks are addressed for the liquid cooling system utilizing aluminum radiator construction and wax-pellet thermostat control. The manual provides torque specifications for the engine assembly to ensure proper joint prevention against corrosion. Chassis servicing documentation includes front fork anti-dive modulator valve assembly, full-floating rear suspension with spring pre-load adjustment, and both disc brake systems with anti-dive integration.

Service sections detail the complete transmission layout with six-speed constant mesh gearbox, primary and final reduction ratios, and electric starter system architecture. Electrical system documentation encompasses the three-phase AC generator, fully transistorized ignitor unit with ignition cut-off circuit, combination meter, and water temperature gauge circuits. The manual encompasses engine disassembly and reassembly procedures, component inspection criteria with service limits for bearing clearance and piston wear, and bearing selection tables for crankshaft journal and connecting rod applications.

Comprehensive lubrication system charting identifies oil flow routes through camshaft journals, rocker arm assemblies, clutch plates, and crankshaft bearings with corresponding specification values. Chassis chapters document steering stem bearing adjustment, front and rear caliper brake assembly, wheel bearing installation using specialized tools, and tire service procedures with inspection criteria for tread depth and sidewall integrity.

FAQ

What tools are **designated** for adjustment procedures? keyboard_arrow_down

09900-20806 thickness gauge and 09917-14910 tappet adjust driver are designated for valve clearance adjustment, with specifications requiring 0.13—0.18 mm clearance when cold.

Identify the **critical** pressure specifications required. keyboard_arrow_down

1100—1500 kPa compression standard is critical for engine condition, with 900 kPa minimum limit before overhaul becomes necessary.

What procedures are **required** for assembly sequence? keyboard_arrow_down

115 N·m is required for tightening camshaft journal holder bolts sequentially in ascending numerical order to ensure even pressure distribution and proper assembly.

Determine the **specified** service interval parameters. keyboard_arrow_down

6000 km intervals are specified for cylinder head nuts retightening, valve clearance inspection, and brake inspection cycles throughout the motorcycle's service life.

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Outstanding service—my email inquiries were answered promptly. The manual is comprehensive and worth every penny!
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The download process was seamless, and I received quick support when I had questions. Highly recommend!
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This manual has saved me so much time and money on my bike maintenance. The diagrams are very helpful!
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The manual is incredibly detailed and easy to follow. Perfect for both novices and experienced riders!