Yamaha F350 & LF350 Outboard Motor Service Manual 2007
This service manual details the F350 and LF350 outboard motors. It provides comprehensive diagrams, diagnostic procedures, and troubleshooting steps for all major systems.
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Models Covered & Key Technical Specifications
Factory-Level Reference Service Manual: Outboard Motor Complete Diagnostics: Yamaha F350 & LF350 Outboard Motors (2007) Chassis-Documentation
Diagnostic-Area: Engine Control Module System Diagram // Serial-Range: 1000001- // Diagnostic-Area: Engine Speed Control System Logic.
- Maximum Power Unit: The engine's power unit features an Electronic Fuel Injection system with a 60° V8, DOHC, 32-valve configuration.
- Advanced Electrical System: This system incorporates Electronic Fuel Injection (Multi-point and Sequential injection) and a Digital Electronic Control system.
- Systematic Fuel System: Includes a modularized fuel system with dual exhaust passages and a divided exhaust manifold for efficient operation.
- Measured Ignition Timing: Ignition timing is controlled by signals from each sensor and map data, ensuring optimal performance across various conditions.
- Critical Cooling System: Features a water drain system directing water from the air duct to the bottom cowl and drain box for efficient drainage.
- Rated Intake and Exhaust: The intake system includes a big bore, single valve throttle body with a long intake manifold made of resin for improved efficiency.
Professional Workshop Service Manual & Technical Specifications
Factory-Level Reference Service Manual: Outboard Motor Complete Diagnostics: Yamaha F350 & LF350 Outboard Motors (2007) Chassis-Documentation
Diagnostic-Area: Engine Control Module System Diagram // Serial-Range: 1000001- // Diagnostic-Area: Engine Speed Control System Logic.
| Specification | Operational-Logic | Architecture |
|---|---|---|
| Engine ECM | Controls fuel injection, ignition timing, and valve timings | Digital Electronic Control System |
| Power Unit Features | 5.3 L (325 ci) V8 engine with Variable Camshaft Timing | Optimized for power and fuel economy |
| Electrical System | Multi-point and Sequential Injection EFI | Integrated Digital Electronic Control System |
| Fuel System | Includes modularized components and divided exhaust | Ensures efficient fuel delivery and exhaust |
| Cooling System | Water-cooled system with drain features | Maintains optimal operating temperature |
| Intake/Exhaust | Big bore throttle body and long intake manifold | Enhances airflow for performance |
Cataloging major assemblies into comprehensive sections, this manual provides a thorough overview of the F350 and LF350 outboard motors. Verification procedures are included for electronic control systems, detailing sensor inputs and ECM control logic. Repair information is provided for the power unit, covering crankshaft, piston, and connecting rod specifications. The document includes coverage of the ignition system, detailing ignition timing control and knock retard compensation. Brake system specifications are included for the PTT (Power Trim and Tilt) unit, outlining its hydraulic path and functions. Safety procedures are documented for the electrical system, covering component checks and wiring harness routing. Documenting torque specifications for various components ensures proper assembly and structural misalignment prevention.
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