Japan Yamarine 2 Stroke 40HP Outboard Engine and Motor Replacement YAMAHA E40gmh

Product Description

Applicable models:
E40GMH, E40GWH, E40JMH, E40JWH, E40JW
Model name - Approved model code - Starting serial No.
E40G - 6F6K - 1013723-
E40J - 6J4K - 1006736-
Service Repair Manual Contains:
=========
Specifications
General information
Periodic checks and adjustments
Fuel system
Power unit
Bracket unit
Electrical systems
Troubleshooting
Index
Lower unit

The YAMARINE E40GMH is part of Yamaha's Enduro Series, a line of rugged, commercial-grade 2-stroke outboard motors designed for durability and reliability in demanding conditions. While specific details about the "E40GMH" model are limited (it may be an older or region-specific variant), Yamaha's Enduro Series typically emphasizes simplicity, heavy-duty performance, and ease of maintenance. Below is a general overview based on Yamaha's Enduro Series and similar 40hp models (e.g., E40XMH):
YAMARINE E40GMH Overview (Typical Enduro Series Features) Model: E40GMH
Series: Enduro Series
Engine Type: 2-stroke (common for Enduro models)
Horsepower: 40hp
Shaft Length: Likely long shaft (20") or extra-long shaft (25") (varies by application/region)
Weight: ~75-80 kg (165-176 lbs)
Fuel Type: Gasoline mixed with 2-stroke oil (50:1 ratio typical)
Cooling System: Water-cooled
Key Features (Based on Yamaha Enduro Series) Durability:
Built for commercial use with corrosion-resistant coatings and robust components.
Ideal for saltwater environments and extended operation.
Reliability:
Simple 2-stroke design with fewer mechanical parts, reducing failure risk.
Trusted for consistent performance in harsh conditions.
Ease of Maintenance:
Manual recoil starter for reliable ignition in remote areas.
Easy access to spark plugs, fuel filters, and gearbox components.
Tiller Steering:
Basic tiller handle for straightforward control, suited for workboats and tenders.
Fuel Efficiency:
Optimized 2-stroke design for efficient fuel consumption under load.
Specifications (Estimated) Displacement: ~696 cc (similar to other 40hp Enduro models)
Full Throttle RPM: 5,000-6,000 RPM
Gear Ratio: ~2.15:1
Gear Shift: Forward and neutral (some models may include reverse)
Propeller: 3-blade aluminum (size varies by boat/application).
Typical Uses Commercial Fishing: Long hours in coastal or inland waters.
Workboats: Utility boats, ferries, or light-duty commercial vessels.
Tenders/Inflatable Boats: High-thrust performance for heavy loads.
Remote Operations: Reliable in areas with limited service infrastructure.
Maintenance Tips Flush After Saltwater Use: Rinse with fresh water to prevent corrosion.
Regular Lubrication: Grease propeller shaft and pivot points.
Check Fuel Mix: Use a 50:1 gasoline-to-oil ratio (confirm with manual).
Inspect Gearcase Seals: Ensure no water intrusion into the gearbox.
Notes on the E40GMH Model The "GMH" suffix may indicate regional variations, shaft length (e.g., "G" for long shaft, "X" for extra-long), or older production years.
For precise details, consult Yamaha's official documentation or contact a Yamaha dealer with the engine's serial number.
Modern Yamaha Enduro models (e.g., E40XMH) often include extra-long shafts (25") for high-transom boats.
If you need further clarification or have specific details about your E40GMH (e.g., serial number, manual excerpts), feel free to share!

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