Description

Kawasaki Ultra 250x Service Manual – Complete Repair & Maintenance Guide

This comprehensive service manual provides detailed maintenance, repair, and troubleshooting procedures for Kawasaki Ultra 250x personal watercraft featuring the JT1500B supercharged 1,498cc four-stroke marine engine. Written by factory-trained technicians, this professional-grade manual delivers step-by-step instructions with precise technical specifications and detailed diagrams for all major systems and components.

Technical Coverage Includes:

• Complete engine service procedures for Kawasaki JT1500B Ninja-derived inline-4 DOHC engine with Eaton TVS supercharger (250HP/7,500 RPM)
• Digital fuel injection system maintenance including 60mm throttle bodies and 4-hole injectors (12.0:1 compression ratio)
• Deep-V hull design (22.5° deadrise) and SMC composite deck repair procedures with gelcoat restoration guides
• KECU (Kawasaki Engine Control Unit) diagnostics and Smart Learning Operation (SLO) calibration
• 155mm axial-flow jet pump service with 3-blade stainless steel impeller (84.5mm pitch)
• Kawasaki Smart Steering (KSS) system calibration and cable replacement (23° maximum angle)
• Comprehensive troubleshooting guides including KECS (Kawasaki Engine Control System)
• Closed-loop cooling system service with intercooler maintenance (5.7L capacity)
• Smart Learning Operation Mode (SLO) and Off-Throttle Steering (OTS) system protocols

Professional Features:

• Factory specifications including 13 PSI boost pressure and critical torque settings
• Detailed KECU wiring diagrams and marine-grade electrical system schematics
• Hull access points and component locations for 165.4-inch watercraft
• Precision measurement specifications for 250hp power plant
• Special marine tool requirements including impeller removal tools
• Environmental compliance and USCG safety regulations

Essential Resource For:

This manual is an indispensable resource for professional marine technicians, experienced watercraft owners, and service facilities maintaining Kawasaki Ultra 250x vessels. The detailed procedures and technical specifications ensure repairs meet factory standards and maintain optimal performance of the JT1500B powerplant and 155mm propulsion system.

All procedures are supported by detailed photographs and illustrations, making complex repairs clear and achievable. Whether performing routine maintenance or major repairs, this manual provides the accurate, model-specific information required for professional results on the Ultra 250x’s supercharged marine platform.