1999–2005 Kawasaki ULTRA150 JET SKI Watercraft Service Manual (P/N 99924-1308-03)

This Kawasaki ULTRA150 JET SKI Service Manual (P/N 99924-1308-03) covers JH1200-B1, JH1200-B2, and JH1200-B3 watercraft with the 1176 mL three-cylinder, two-stroke engine.

Text search, navigation, and wiring detail: Service text is searchable, with embedded bookmarks for chapters, procedures, and tables. Labels within wiring-diagram images are not searchable, and small wire-color codes and connector details require zooming.

• Engine repair: Engine removal and installation, top-end inspection, crankcase splitting and reassembly, balancer installation, and crankshaft condition checks.

• Fuel and lubrication: Keihin CDCV carburetor rebuilding and synchronization, pop-off pressure checks, reed-valve inspection, and oil-pump bleeding and output testing.

• Drive System, Pump and Impeller: Drive-shaft holder service, pump disassembly, bearing and seal replacement, shim selection, and impeller-clearance adjustment.

• Cooling and exhaust: Cooling and Bilge System flushing, breather and filter inspection, exhaust-manifold service, and Water Box Muffler removal and inspection.

• Electrical diagnosis: Digital DC-CDI ignition testing, starter repair, charging-system checks, sensor measurements, and multifunction-meter troubleshooting.

• Steering and trim: Steering-cable adjustment, trim-actuator and control-unit testing, plus Kawasaki Smart Steering sensor, cable, and actuator inspection.

Written primarily for trained mechanics in a properly equipped shop, the manual also supports owners doing basic maintenance and repair who understand mechanics, tool use, and workshop procedures.

Keihin Carburetors and Oil Injection

The Keihin CDCV 40-35 section covers vacuum pistons and diaphragms, float-arm setting, inlet valves, and the built-in pulse fuel pump. High-altitude jetting tables identify alternative main and pilot jets with part numbers. The fuel pump is serviced as a replaceable unit; internal pump disassembly is excluded.

Throttle, carburetor, and oil-pump cable adjustments are linked because they control fuel delivery and oil injection together. Oil-output tests distinguish the three carburetor feeds from the front and rear balancer feeds.

Engine Top End and Bottom End Repair

Nikasil-plated cylinders, piston and ring inspection limits, compression diagnosis, and cylinder-head tightening sequences are covered alongside crankshaft runout and connecting-rod checks.

Bottom-end procedures cover balancer timing, separate balancer oil chambers, and magneto flywheel and stator removal. Engine installation includes mount-shim selection.

Crankshaft disassembly is outside the manual's scope; crankshaft rebuilding requires a suitably equipped shop. The rotor-holder cautions explain how incorrect holding points can damage the balancer-drive gear teeth or magneto flywheel.

Jet Pump, Steering, and Hull Service

Separate B1/B2 and B3 oil-seal installation dimensions help you select the correct pump-assembly data during repair. A shim-selection chart supports impeller-clearance setting.

Steering-nozzle centering and electric-trim cable adjustment are documented separately. The hull section distinguishes B1 from B2-and-later hatch hardware and covers crossmember, stabilizer, and hull replacement.

Ignition, Smart Steering, and Electrical Testing

Ignition and sensors: K-TRIC operation, ignition-coil and crankshaft-sensor peak-voltage tests, and throttle-sensor adjustment come with connection details and test specifications. Tool references include Peak Voltage Adapter 57001-1415 and Throttle Sensor Setting Adapter 57001-1400.

Smart Steering: The Flow Chart of Kawasaki Smart Steering System explains activation conditions, while the electrical chapter provides sensor and actuator checks. Its installation cautions identify impact-tool damage to the actuator's DC servomotor.

Reference pages include the Wiring Diagram, Ignition System Circuit, and Electric Trim System Circuit. The Fuel System Diagram and Cable, Wire and Hose Routing views show fuel-line connections and harness placement.

Maintenance, Troubleshooting, and Storage

The Periodic Maintenance Chart is backed by torque and locking-agent tables, fluid capacities, wear limits, and electrical test specifications. The troubleshooting guide addresses starting failure, misfire, overheating, low power, and poor propulsion despite normal engine operation.

Storage and return-to-service procedures cover fuel, lubrication, cooling, and bilge-system preparation. Fuel vapors and high-voltage ignition require the manual's ventilation and electrical-safety precautions during service.

Printable PDF and Included Pages

One printable, 293-page PDF in English contains 277 service/reference pages, one cover, four introductory pages, nine blank separator pages, one numbered placeholder page, and one model-application page. All are already included in the total.