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 E40JMH is part of Yamaha's Enduro Series, a line of durable, commercial-grade outboard motors designed for rugged use in demanding environments. While specific details about the "E40JMH" model are less commonly documented (it may be an older or region-specific variant), Yamaha's Enduro Series typically emphasizes reliability, simplicity, and heavy-duty performance. Below is a general overview based on Yamaha's Enduro Series and similar 40hp models (e.g., E40XMH):
YAMARINE E40JMH Overview (Typical Enduro Series Features)
Model: E40JMH
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 regional specifications)
Weight: Approximately 75-80 kg (165-176 lbs)
Fuel Type: Gasoline mixed with 2-stroke oil (typical for Yamaha 2-stroke engines)
Cooling System: Water-cooled
Key Features (Based on Yamaha Enduro Series)
Durability:
Built for commercial use, with corrosion-resistant materials and coatings for saltwater environments.
Reinforced components to handle heavy loads and extended operation.
Reliability:
Simple 2-stroke design with fewer moving parts, reducing the risk of mechanical failure.
Trusted by commercial operators for consistent performance in tough conditions.
Ease of Maintenance:
Manual recoil starter for reliable ignition in remote areas.
Easy access to spark plugs, fuel filters, and gearbox for routine servicing.
Tiller Steering:
Basic tiller handle for straightforward control, ideal for workboats and tenders.
Fuel Efficiency:
Optimized 2-stroke design for efficient fuel consumption under load.
Specifications (Estimated)
Displacement: ~700 cc (typical for 40hp 2-stroke engines)
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 application).
Typical Uses
Commercial Fishing: Long hours of operation in coastal or inland waters.
Workboats: Light-duty commercial vessels, ferries, or utility boats.
Tenders/Inflatable Boats: High-thrust performance for moving heavy loads.
Remote Areas: Reliable operation in regions with limited repair infrastructure.
Maintenance Tips
Flush After Saltwater Use: Prevent corrosion by rinsing with fresh water.
Regular Lubrication: Grease propeller shaft and pivot points.
Check Fuel Mix: Use a 50:1 gasoline-to-oil ratio (confirm with manual).
Inspect Seals: Ensure gearcase seals are intact to avoid water intrusion.
Notes on the E40JMH Model
The "JMH" designation may indicate specific regional variations or older models.
For precise details, consult Yamaha's official documentation or contact a Yamaha dealer with the serial number.
Modern Yamaha Enduro models (e.g., E40XMH) often include extra-long shafts (25") for high-transom boats.
If you need clarification or have more context about the E40JMH, feel free to share!
