1986–1992 Suzuki VS750GL / VS800GL V-2 engine Service Manual (P/N 99500-37047-01E)

• A 408-page PDF reproduction of Suzuki’s VS750GL/800GL service manual, cover reference 99500-37047-01E, combining the 1985 base material with model-year supplements through 1992.
• Engine coverage includes compression testing, engine removal and installation, cylinder-head repair, and internal transmission and clutch service.
• Shaft-drive overhaul covers secondary and final bevel gears, bearing and seal replacement, shim selection, backlash measurement, and tooth-contact adjustment.
• Carburetor procedures address disassembly, needle-valve inspection, float-height adjustment, fuel-level checks, and carburetor synchronization, alongside fuel-pump and relay testing.
• Cooling-system diagnosis covers radiator and cap pressure tests, thermostat inspection, water-pump bearing and mechanical-seal service, and fan-motor and thermo-switch checks.
• Electrical sections provide charging-system fault tracing, ignition-component tests, starter-relay checks, and market-specific wiring diagrams, including side-stand ignition-interlock circuits.

Model-Year Supplements and the VS800 Transition

The supplements cover VS750GLG (1986), GLH (1987), GLJ (1988), and GLK (1989), followed by VS750GLFL/GLPL (1990), VS750GLFM/GLPM (1991), and VS800GLN (1992). These sections update the base chapters rather than repeat every procedure. Earlier specifications distinguish GLF/GLP configurations and GLEF/GLEP cast-wheel versions; routing drawings separate flat- and pullback-handlebar layouts.

The 1992 supplement documents the change to the 805cc engine, including revised pistons, rings, and crankpin-bearing selection data. It identifies Mikuni BDS36SS front and BS36SS rear carburetors, replacing the earlier BDS34SS/BS34SS specification. Intake-pipe, gasket, radiator, and swingarm-pivot changes are documented separately, so the VS800 coverage goes beyond a revised displacement figure.

V-Twin, Transmission, and Chassis Repair

Engine inspection sections give wear limits for pistons, rings, and camshafts, along with valve-seat inspection and refacing procedures. Bottom-end work extends to connecting-rod bearing color-code selection, crankshaft bearing inspection, and thrust-washer selection. Transmission drawings identify gear, washer, and circlip positions, with shift-fork clearance checks supporting internal repair.

Repair cautions address damage to the left-hand-threaded primary-drive gear bolt during incorrect removal. The oil pump is treated as a replacement assembly; the manual warns that opening it can damage its threadlocked screws.

Chassis repair covers front-fork disassembly, steering-stem and wheel-bearing service, and swingarm inspection. Brake sections distinguish front-disc caliper and master-cylinder work from rear-drum shoe and linkage service. Hydraulic clutch-cylinder inspection and circuit bleeding are also covered.

Electrical Updates, Diagrams, and Special Tools

Model-year changes include the 1987 combined fuel-pump/fuel-cut-relay assembly and the 1988 CPU-controlled ignition system. The latter has a dedicated test procedure using digital ignitor checker 09931-64410, rather than simply carrying forward the base ignition tests.

Reference illustrations include the Camshaft Timing drawing and Final Gear Case Breather Circuit. The Lubrication System Chart follows the oil circuit, while Wiring Diagram and Cable Routing drawings distinguish market and handlebar configurations. Symptom/cause/remedy troubleshooting charts cover problems such as hard starting, clutch slip, poor shifting, shaft-drive noise, overheating, and charging faults.

Tool references identify carburetor balancer 09913-13121 and adapter 09913-13140, along with the pullers, bearing tools, and measuring equipment required for the documented work.

Factory Specifications and Shop Safety

Periodic-maintenance charts define lubrication, fluid-change, and adjustment schedules by mileage and elapsed time. Service tables provide torque specifications for chassis bolts, engine mounts, and internal assemblies, plus fluid capacities, adjustment data, and electrical test values. Suzuki’s special-materials tables identify sealants and thread-locking agents by application.

Before engine removal or heavy disassembly, ensure the motorcycle is securely supported on a proper lift and the battery is disconnected.

Scan Coverage

This copy is not page-complete. It contains duplicate images and omits original pages 3-73–3-74, 7-10, 7-20, 9-26, and 16-27–16-28. These gaps affect camshaft-timing material, portions of the electrical and service-data sections, and the 1992 label information and air-supply system diagram. The page count includes covers and duplicate images.