2005-2006 Yamaha F250/LF250 Outboard Motor Service Manual

2005–2006 Yamaha F250 and LF250 Outboard Technical Documentation

• Covers 2005–2006 Yamaha F250 and LF250 outboard motors, including F250TR and LF250TR variants, with detailed 4-stroke DOHC V6 engine specifications
• Official Yamaha service publication LIT-18616-02-97, revised edition first published May 2006
• Contains dozens of detailed exploded-view diagrams, electrical circuit schematics, and torque-specification tables for all major assemblies
• Re-download the file any time, no expiration
• OCR text layer lets you jump to a torque spec by keyword
• Documents comprehensive service intervals, component clearances, and wear limits for maintenance
• Provides vital identification data for serial-number ranges starting at 6P2 1000001 and 6P3 1000001 for 2005 models
• Laid out for standard letter and A4 printing
• This 386-page factory manual is the authoritative source for the 2005–2006 Yamaha F250/LF250 outboard line, documenting essential maintenance, engine assembly, fuel system, and electrical diagnostic procedures

Manual Content and Coverage

The 2005–2006 Yamaha F250 and LF250 service manual provides structured technical data for factory-grade workshop maintenance covering the entire V6 power unit, lower unit, bracket unit, and fuel management systems. Each chapter documents critical assembly protocols, including ECM system diagnostics, variable camshaft timing parameters, and ignition control timing. The technical chapters break down the engine's electronic fuel injection system, throttle valve control, and complex sensor functions needed for system troubleshooting.

Engine and Component Specifications

Technical data within the publication includes tightening torque values for all engine bolts and fasteners, such as cylinder head bolt sequences and spark plug specifications. Engine oil capacity is documented at 5.6 liters without oil filter replacement, increasing to 5.8 liters when servicing the filter. Valve clearance for the intake is listed at 0.20 ± 0.03 mm in the cylinder head maintenance table. The cooling system thermostat opening temperature is specified at 58–62 °C (136–144 °F) in the maintenance spec section. Fuel pressure reference values are listed at 260 kPa (37.7 psi) at engine idle speed to assist with pump and regulator diagnostics. Note: This page is a contents overview for the manual. It does not provide repair or diagnostic instructions.