1991 Kawasaki JET SKI 650SX & X-2 Service Manual

1991 Kawasaki JET SKI 650SX and X-2 Technical Supplement

• Covers the 1991 Kawasaki JET SKI 650SX and X-2 models, specifically the JS650-B1 variant
• Original OEM publication P/N 99924-1069-01, documented for service and maintenance supplementation
• Contains 83 pages of technical specifications, exploded-view diagrams, and electrical system schematics
• File is available immediately after purchase as a direct download
• Page spreads stay legible when printed at original size
• Indexed PDF search covers every chapter and appendix
• Features a specialized periodic maintenance chart for 10-hour, 25-hour, and 100-hour service intervals
• This 1991 supplement provides the specific configuration data required when servicing the JS650-B1 in conjunction with the base service manual

Service and Maintenance Documentation

The 1991 Kawasaki JET SKI 650SX service manual supplement delivers structured technical information for the 635 ml vertical twin engine. Chapters detail the fuel system, including Keihin CDK38-32 carburetor specifications and jet adjustments, alongside lubrication system parameters for the 2.8 L oil tank capacity. Mechanical components for the drive shaft, pump, and impeller are documented with specific torque values and bearing service limits for maintaining jet thrust performance.

Additional sections clarify the electrical system, including CDI igniter testing and wiring diagrams specific to the JS650-B1 model year. Hull and engine hood sections define the rubber damper and gasket installation patterns required for long-term protection against water ingress during operation.

Specification and Reference Data

Torque requirements are explicitly listed for major fasteners, with cylinder head nuts documented at 29 N-m (22 ft-lb) and coupling bolts set at 98 N-m (72 ft-lb) in the assembly sections. Spark plug gap is specified at 0.7–0.8 mm in the tuning section. The drive shaft runout standard is documented at less than 0.2 mm with a 0.6 mm service limit. Engine bed mounting bolts require 22 N-m (16.0 ft-lb) for proper securing to the hull. For maintenance scheduling and how factory workshop documentation is structured, the guide provides essential intervals. Reference only — always consult a certified technician before performing service on this equipment. An official 1991 Kawasaki JET SKI 650SX & X-2 OEM service manual supplement documenting engine, fuel, cooling, and electrical specifications for the JS650-B1 watercraft build.

Document Reference: Original OEM publication P/N 99924-1069-01