Model Variant:
50 hp 2-Stroke, Enduro/Commercial series
Production Years Covered:
2000 model year
Engine Designation:
Yamaha 50 hp 2-stroke, 3-cylinder
Series:
EJRY (remote steering, electric start)
Target Audience:
Commercial operators, fishing fleets, and DIY owners of mid-range 50 hp 2-stroke outboards
Market Segment:
Mid-size portable/sem longshaft outboard, workboat and utility use
Advantage:
Simple carbureted 2-stroke design with proven durability and easy field service
Competitors:
Mercury 50 hp, Evinrude/Johnson 50 hp 2-strokes of the same era
Powerhead:
Inline 3-cylinder loop-charged 2-stroke
Controls:
Remote steering, remote throttle and shift
Ignition:
CDI microcomputer ignition system
Manual Type:
Service Repair Maintenance Manual
Source:
Factory (OEM) service manual
Manual Style:
Step-by-step workshop procedures with specifications tables
Delivery:
Instant digital download
Printable:
Yes, pages can be printed for shop use
Bookmarked:
N/A - bookmarking availability not specified
Diagrams:
Exploded diagrams included
Powerhead:
Complete teardown, inspection and rebuild of the 3-cylinder 2-stroke block, pistons and crankshaft
Cylinder Head & Cylinders:
Inspection, honing, reconditioning limits and torque specifications
Fuel System:
Carburetor overhaul, fuel pump, primer and fuel line service
Ignition System:
CDI unit, stator, trigger coils and spark plug service
Cooling System:
Water pump, impeller, thermostat and cooling passage service
Lower Unit / Gear Case:
Gear removal, inspection, rebuild and gearcase seal replacement
Electrical & Starting:
Wiring diagrams, starter motor, battery charging and rectifier/regulator testing
Power Trim & Tilt:
Trim/tilt system service and troubleshooting where fitted
Steering & Controls:
Remote steering, throttle and shift linkage adjustment
Maintenance:
Scheduled service, decarbonizing, winterization and storage
Troubleshooting:
Symptom-based diagnostic charts for hard starting, poor performance and overheating
Repair & Overhaul:
Complete disassembly, measurement, repair and reassembly procedures
Specifications:
Torque specs, clearances, wear limits and tightening sequences
Special Tools:
Required Yamaha special tools identified in each procedure
Detail Level:
Factory-level: written for trained technicians and equipped DIY mechanics
Photos & Illustrations:
Exploded views and line diagrams throughout
Wiring Diagrams:
Included for electrical system diagnostics
Parts Numbering:
Factory part numbers referenced in exploded diagrams
Torque Values:
Provided for all fasteners in each assembly procedure
Consumables:
Specified lubricants, sealants and gasket materials per procedure
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 Type:
Inline 3-Cylinder, 2-Stroke
Displacement:
703 cc (42.9 ci)
Cooling System:
Water-cooled
Horsepower:
50 hp at propshaft
Rated RPM Range:
4500-5500 rpm (typical for this series)
Carburetor:
Single carburetor
Recommended Fuel:
Regular unleaded gasoline, 87 octane minimum
Oil:
Yamalube 2-Stroke TCW3 or equivalent (premix)
Over-Rev Limiter:
CDI-controlled engine speed limiter
Low Oil / Overheat Warning:
Warning horn and indicator circuit
Emergency Stop Switch:
Lanyard kill switch compatible
Crash Test Information:
N/A - not applicable to outboard motors
Ignition System:
CDI (Capacitor Discharge Ignition)
Charging System:
Alternator output for battery charging and accessories
Infotainment / Driver Assistance
Audio System:
N/A - not applicable to an outboard motor
Driver Assistance:
N/A - not applicable to an outboard motor
Initial Service:
First 20 hours or 3 months
Regular Service:
Every 100 hours or 12 months
Impeller Replacement:
Recommended every 2 years or 200 hours
Recommended Oil Type:
Yamalube 2-Stroke TCW3 or equivalent
Gearcase Oil Type:
Yamaha Outboard Gear Oil or equivalent
Spark Plug Type:
NGK B8HS-10 or BR8HS-10
Common Wear Items:
Water pump impeller, spark plugs, gearcase seals, carburetor gaskets
Known Issues:
Typical 2-stroke concerns: carbon buildup requiring decarbonizing, and cooling passage corrosion if flushing is neglected
Manufacturer:
Yamaha Motor Co., Ltd., Japan - outboard manufacturer since 1960
Brand Note:
Yamaha is one of the world's largest outboard engine producers
Series:
Yamaha 50 hp 2-stroke Enduro/commercial family, evolution of proven 3-cylinder powerheads
2000 Model Year:
Remote steering, electric start configuration with CDI ignition
Production:
Manufactured by Yamaha Motor Co., Ltd. (Japan)
