2006 Sea-Doo 4-TEC GTX/RXP/RXT/GTI Service & Repair Manual (P/N 219 100 239)

• Model-specific 2006 coverage: GTI 236A/B and 256A/B; GTI SE 246A/B; GTX 146A/B; GTX Wake 156A/B; GTX Supercharged 166A; GTX Limited 186A-C; RXP 216A-D; and RXT 176A-D.
• Engine repair procedures: Covers engine removal, installation and alignment; leak-down testing; cylinder-head and cylinder-block service; camshaft timing; lubrication and cooling-system work; exhaust service; and complete supercharger inspection, teardown, reassembly, and installation.
• Factory EMS and fuel diagnosis: Includes B.U.D.S. with MPI/MPI-2, stored fault-code diagnosis, ECM/MPEM and sensor testing, DESS key programming, closed-throttle and idle-actuator reset, ignition-timing setup, and fuel-system leak and pressure testing.
• Jet-pump, drive, and steering work: Details impeller and wear-ring inspection, pump leak testing, impeller-shaft and bearing service, drive-shaft and carbon-ring repair, reverse-system work, VTS testing, steering alignment, and O.P.A.S. service.
• Electrical and hull/body sections: Provides ignition, charging, and starting-system tests; Deutsch, Packard, AMP, and ECM connector service; the main wiring foldout; and fiberglass, gelcoat, hardware, seat, storage, sponson, and through-hull repair information.
• Document details: This product is a 428-page English PDF scan of the BRP shop manual. The original rear cover carries BRP document number 219 100 239, and the manual includes exploded assembly views, special-tool references, model-specific specification tables, and component torque data.

Exact Model and Engine Coverage

The model table separates the 130-hp naturally aspirated GTI/GTI SE group from the 155-hp naturally aspirated GTX/GTX Wake group. GTX Supercharged uses the non-intercooled supercharged installation, while GTX Limited, RXP, and RXT use the supercharged intercooled configuration. Those differences carry into the intake, fuel-pressure, cooling, exhaust, propulsion, and technical-specification material instead of being treated as one generic 1503 setup.

BRP states that this publication was prepared primarily for watercraft mechanical technicians already familiar with BRP service procedures, making it a technician-level repair reference rather than a beginner guide. It also directs parts ordering to the model-specific parts catalogs; this PDF is the shop manual, not a replacement parts catalog.

Engine, Fuel, and Electronic Diagnosis

The engine chapters follow major workshop jobs from removal and alignment through cylinder-head and block disassembly, inspection, and reassembly. Separate material covers the PTO housing and magneto, dry-sump lubrication components, closed-loop engine cooling, open-loop exhaust cooling, intake manifolds, the intercooler, and engine leak diagnosis. The supercharger chapter adds installed inspection, internal parts checks, bearing and clutch-stack assembly, and slipping-moment verification.

Electronic diagnosis is built around the 1503 4-TEC control system. The manual explains monitoring messages and beep codes, limp-home operation, stored faults, wiring-circuit references, and B.U.D.S. functions for reading and clearing faults, activating components, programming DESS keys, and performing required resets. Factory tool listings identify the MPI-2 (P/N 529 036 018), DESS post interface (P/N 529 036 019), engine-alignment shaft (P/N 295 000 141), and impeller remover/installer (P/N 529 035 820).

Propulsion, Wiring, and Hull Repair

The propulsion chapters cover jet-pump housing tests, impeller-to-wear-ring inspection, shaft and bearing service, and drive-system work at the PTO seal, floating ring, carbon ring, and drive shaft. Reverse-gate hardware, VTS operation, steering cable and nozzle alignment, and the water-operated O.P.A.S. cylinders and side vanes have their own repair procedures.

Electrical coverage reaches beyond a single schematic. It includes charging-output and starting-system tests, DESS troubleshooting, gauge and sender diagnosis, ECM connector terminal locations, and terminal removal, crimping, and installation for the connector families used on the craft. Hull/body material includes hardware replacement and adjustment plus structural fiberglass and gelcoat repair for bubbles, minor fractures, and compound damage.

Factory Data, Diagrams, and Service Cautions

Technical specifications are divided into GTI/GTI SE, GTX/GTX Wake, GTX Supercharged/GTX Limited, and RXP/RXT groups. Across these tables and the individual service sections, the manual supplies capacities, component torque values, pressure-test data, engine and valve wear limits, clearances, electrical test values, impeller data, dimensions, and performance references.

Useful graphics include the 1503 4-TEC Control System diagram, closed-loop cooling circuit, Fuel Pump Diagnostic Flow Chart, ECM connector-A terminal view, jet-pump exploded views, and the full 2006 4-TEC wiring foldout. The supercharger section warns that an incorrect spring-washer stack, unsuitable grease, or pressing through the bearing balls can damage the assembly or shorten bearing life. The jet-pump chapter also flags its model-specific cooling-water reducer: incorrect installation can overheat and damage the exhaust system.

Follow the manual's safety notices before physical work, especially around the continuously pressurized fuel system, fuel vapor, battery isolation, lifting and supporting the watercraft, and high-speed rotating engine and pump components.