Yamaha WB760U WaveBlaster II Jetski 1996 Service Manual (P/N LIT-18616-01–47)

• Covers the 1996 Yamaha WB760U WaveBlaster II, featuring the 754 cc two-cylinder, two-stroke engine and single-stage axial flow jet pump.
• Official 144-page Yamaha OEM publication (LIT-18616-01–47, 90890-06752), first edition from February 1996.
• Contains over 40 exploded-view diagrams, 15 specialized tool references, and complete wiring schematics for the ignition, charging, and indicator circuits.
• Details critical marine components including the intermediate housing, exhaust chamber, starter motor, flywheel magneto, control system, hull and hood, and the bilge strainer.
• Features specific visual aids such as removal and installation charts, maintenance interval charts, trouble analysis tables, fuel line exploded diagrams, ignition spark gap views, and electrical continuity charts.

System Coverage and Technical Data

This factory documentation details the mechanical and electrical architecture of the original WaveBlaster II. You get complete technical specifications for the power unit, covering the cylinder head, reed valve, muffler, crankcase, and crankshaft assembly. The manual maps out the entire fuel system, breaking down carburetion, oil pump circuits, and the fuel tank assembly. For electrical diagnostics, it provides exact wiring diagrams and routing for the ignition, starting, and indicator systems. Load this comprehensive PDF directly on your shop tablet to cross-reference precise OEM tolerances at the workbench. This eliminates trial-and-error parts swapping and streamlines complex electrical troubleshooting for an accurate repair.

Beyond the engine block, the manual outlines the jet pump unit, highlighting the impeller, drive shaft assembly, cooling lines, and bilge routing. It provides step-by-step procedures for tasks that typically require an expensive trip to the marine dealer, such as dual carburetor synchronization, oil injection pump air bleeding, steering cable adjustment, and precise impeller clearance measurement. You will find defined periodic inspection schedules to maintain internal clearances, alongside reference tables for tightening torques, fluid capacities, and wear limits.

For instance, cylinder head bolt torque is set at 36 Nm (26 ft-lb), while the intake reed valve bending limit is 0.2 mm. Electrical baselines note the ignition coil primary winding resistance at 0.078–0.106 ohms (at 20°C). Working on high-performance marine engines carries inherent physical risks regarding high voltage and pressurized fuel systems; always verify all procedures against these OEM parameters or consult a certified marine technician before beginning teardowns.