1998 Yamaha EXCITER TWIN Service and Repair Manual

Look for part number LIT-18616-01-90 when servicing a 1998 Exciter Twin. Its model code is EXT1200W, the same code the Exciter 135 carries, which tells you how closely Yamaha grouped these boats.

The manual spans 1998 and 1999 and covers the Exciter 135, the Exciter 270 and the Exciter as well. Shared assemblies are described once, with the specification tables distinguishing the models where they differ.

Procedures follow the factory order of work: engine teardown with measured wear limits and reassembly torque, jet pump and impeller service, wear ring replacement, steering and reverse gate adjustment, fuel and cooling systems, exhaust, bilge and deck hardware. The electrical chapter provides full wiring diagrams together with resistance and voltage checks, which is what you need for a boat old enough to have corroded connectors.