2004 Yamaha F50TR/T50TR/F60TR/T60TR Outboard Motor Service Manual (P/N LIT-18616-02-85)

This 2004 Yamaha service manual covers F50TR (6C1), T50TR (6C2), F60TR (6C5), and T60TR (6C6) remote control EFI outboards, each starting at serial number 1000001. The cover identifies the F50D/T50D/F60D/T60D series. This is the first edition, July 2004, publication LIT-18616-02-85, with manual code 6C1-28197-1G-11.

• Power unit repair: Engine removal and installation, cylinder-head and cylinder-block disassembly, valve service, piston inspection, and crankshaft bearing selection.

• EFI fuel system: Mechanical fuel-pump service, vapor separator disassembly, float adjustment, fuel-pressure measurement, and pressure-regulator testing.

• Lower unit service: Separate F50/F60 and T50/T60 procedures for water pumps, propeller shafts, drive shafts, gear shimming, and backlash measurement.

• Bracket and trim system: Steering arm and swivel bracket service, power trim and tilt motor repair, gear-pump inspection, cylinder service, and bleeding.

• Electrical diagnosis: Ignition, starting, and charging tests; sensor and relay checks; Yamaha Diagnostic System coverage and diagnostic flash-code charts.

• Workshop references: Exploded assembly views, component-specific tightening torques, maintenance interval charts, hose-routing diagrams, wiring diagrams, and troubleshooting charts.

Written primarily for Yamaha dealers and trained mechanics, this manual assumes an understanding of the mechanical and electrical concepts involved in service and repair.

EFI Fuel System and Fault Diagnosis

The fuel-system overview explains the redesigned fuel and intake layout developed from the carbureted F60. Fuel and blowby hose routing views and cooling water pilot hose diagrams show the vapor separator and fuel cooler connections.

Vapor separator service covers the built-in pressure regulator, electric fuel pump, needle valve, and float settings. The intake manifold section addresses the throttle position sensor and idle speed control, while electrical tests cover the vapor-control solenoid valve.

Yamaha Diagnostic System sections describe recorded faults, live sensor monitoring, stationary and active tests, and data logging. Full software operating instructions are covered by the separate Yamaha Diagnostic System Instruction Manual.

Self-diagnosis uses diagnostic test lead YB-06795 and a flash-code chart. Symptom-specific troubleshooting charts help distinguish fuel-delivery, ignition, and mechanical causes of hard starting, stalling, or unstable idle.

Power Unit and Lower Unit Overhaul

Internal engine procedures include valve-guide replacement, valve-seat refacing, piston and cylinder-bore inspection, and color-coded connecting-rod and main-bearing selection. Valve seat cutting views and staged cylinder-head bolt tightening instructions support reassembly.

Timing-belt replacement and valve-clearance adjustment are covered in detail. The timing instructions warn that rotating either sprocket with the belt removed can cause piston-to-valve contact and damage.

Cooling-system coverage includes thermostat opening tests, water-passage checks, and water-pump inspection. Routine service also addresses engine oil and filter changes, spark plugs, anodes, and throttle and shift-link adjustment.

The lower-unit sections distinguish F50/F60 forward and reverse gear backlash checks from T50/T60 forward gear backlash checks. Gear shimming diagrams and separate shim-selection procedures keep the two gearcase designs identifiable during rebuild work.

The lower-unit leak-test instructions also warn that excessive test pressure can damage the oil seals.

Trim Hydraulics, Starting, and Charging

Power trim and tilt service extends to the gear pump's shuttle pistons and relief valves, tilt-cylinder check and absorber valves, and motor brushes and commutator. Bleeding procedures cover both the removed assembly and the installed unit.

Starter-motor disassembly is followed by pinion, armature, brush, and magnet-switch checks. Stator coil and rectifier regulator tests use peak-voltage tables; the color wiring diagram provides connector layouts, pin numbers, and wire color codes.

Outboard maintenance involves pressurized fuel and moving parts. Follow the manual's fuel-pressure release and electrical-isolation precautions for the procedure being performed.

A Preview of Engine Checks and Gearcase Capacities

These examples are a small selection of the manual's service specifications. For all four models, cold intake valve clearance is 0.20 ± 0.05 mm, and warm-engine idle speed is 700–800 r/min.

Minimum compression pressure is listed as reference data at 960 kPa, with the engine warmed up, 20 °C ambient temperature, wide-open throttle, and all spark plugs removed. Injector resistance is also reference data: 12.0 Ω at 21 °C for all four models.

Gear oil quantity differs by lower unit: 430 cm³ for F50TR/F60TR and 670 cm³ for T50TR/T60TR.

PDF Navigation and Page Count

Text search and diagram detail: The PDF includes searchable text and embedded chapter and section bookmarks. One main-index bookmark requires a separate external file. Small wire codes and connector pin numbers in the wiring diagram are readable with zoom.

One printable English-language PDF contains 272 pages in total, including the original front cover and publication back page. These two cover pages are already included in the total; there are no separate supplements.