Target Audience:
Outboard technicians, marine mechanics, dealership parts departments, and DIY owners performing repairs on Yamaha 4G outboards
Primary Advantage:
Factory part numbers and exploded diagrams let you identify and order the exact component needed without guesswork
Cost Benefit:
Enables parts sourcing at dealer counters or online at savings over dealer-installed prices
Illustrated Diagrams:
Exploded parts views for every assembly group
Part Numbering:
Complete Yamaha part numbers listed by section
Printable Format:
Print individual pages or entire sections as needed
Power Head:
Cylinder block, crankcase, pistons, crankshaft assemblies with exploded views
Cylinder Head:
Head, gaskets, valves, and related hardware part listings
Fuel System:
Carburetor, fuel pump, tanks, lines, and fittings
Ignition System:
Magneto, CDI components, spark plugs, and wiring parts
Cooling System:
Water pump, impeller, thermostat, and cooling passages
Lower Unit:
Gear case, gears, bearings, seals, and propeller shaft components
Steering and Tiller:
Steering handle, throttle, and linkage components
Clamp Brackets:
Transom brackets, swivel brackets, and mounting hardware
Anodes and Trim:
Zinc anodes, trim tabs, and adjuster parts
Electrical Components:
Starter, alternator/charging parts, and switches where fitted
Fasteners and Hardware:
Bolts, nuts, washers, and clips per assembly group
Parts Identification:
Locate any component by exploded diagram and reference number
Parts Ordering:
Cross-reference part numbers for dealer or online ordering
Disassembly Reference:
Group-level breakdowns supporting disassembly, repair, and assembly work
Diagram Type:
Factory exploded views with numbered callouts
Part Detail Level:
Individual component part numbers with quantities per assembly
Repair Instructions:
N/A - this is a parts catalog, not a step-by-step service repair manual
Part Number Format:
OEM Yamaha part numbers organized by section
Sourcing Method:
Dealer parts counter or internet part number search
Page Format:
Sectioned listings matching assembly groups
File Format:
PDF (searchable, bookmarked, zoomable)
Compatibility:
Windows, macOS, Linux, iOS, and Android — any device with a PDF reader
Requirements:
A PDF reader application (e.g. Adobe Acrobat Reader, free)
Searchability:
Fully text searchable for fast lookup of any topic
Print Quality:
High-resolution digital pages, printable at full clarity
Binding Type:
N/A — digital download, no physical binding
Paper Type:
N/A — digital download, no physical paper
Engine Options:
Yamaha 4G series outboard as covered by the parts catalog
Cycle / Type:
N/A - exact cycle and cylinder count not specified in this parts manual
Horsepower:
N/A - not specified in the parts manual; confirm by engine model number
Displacement (cc):
N/A - not specified in the parts manual; confirm by engine model number
Fuel Delivery:
N/A - fuel delivery details not specified in this parts catalog
Crash Test Rating:
N/A - not applicable to an outboard engine
Active and Passive Features
Emergency Stop:
Emergency stop switch lanyard provisions covered in parts listings where fitted
Cooling Protection:
Overheat protection components listed in cooling system sections
Neutral Start:
Neutral starting provisions per model where fitted
Anodes:
Sacrificial zinc anodes protecting against galvanic corrosion
Manual Purpose:
Supports disassembly, repair, and assembly work
Interval Schedule:
N/A - this parts manual does not include service interval schedules
Oil Capacity:
N/A - engine oil capacity not specified in this parts manual
Gear Oil:
Lower unit gear oil and related seals covered in lower unit parts sections
Common Wear Items:
Water pump impeller, anodes, propeller, gaskets, and seals
Fluid Specifications:
N/A - fluid specifications not listed; refer to the corresponding service manual
Sourcing Method:
Dealer parts counter or internet search by part number
Cost Saving:
Savings over dealer-installed prices when sourcing parts yourself
Manufacturer:
Yamaha Motor Co., Ltd., a leading Japanese manufacturer of outboard marine engines
Model Family:
4G designation within Yamaha's outboard engine lineup
Evolution:
N/A - production history and evolution of the 4G series not detailed in this parts manual
Production Location:
N/A - not specified in the source material
