6E5-85740-02-00 Yamaha Control Unit 115HP | Genuine Used Part

🔧 Product Description

Genuine Yamaha Oil Level and Warning Control Unit - Part Number: 6E5-85740-02-00

A genuine used Yamaha oil-injection control unit for selected V4 and V6 carburetted two-stroke outboard motors.

The module monitors the engine-mounted and remote oil-tank circuits, controls automatic oil transfer and activates the warning or engine-protection system when the oil level or transfer system is outside specification.

⚙️ Key Features

• Genuine used Yamaha oil-warning control module
• Correct part number 6E5-85740-02-00
• Used on Yamaha precision-blend oil-injection systems
• Controls remote-to-engine oil transfer and warning functions
• Superseded by Yamaha service kit 6E5-WS857-00-00

🚤 Compatibility

Commonly used on

• Yamaha Precision Blend oil-injection systems
• Carburetted V4 and V6 two-stroke outboards
• Remote and engine-mounted oil-tank transfer circuits

Typically suits

• Engine models:
• Yamaha 100HP two-stroke
• Yamaha 115HP two-stroke
• Yamaha C115 two-stroke
• Yamaha 130HP two-stroke
• Yamaha L130 two-stroke
• Yamaha 140HP two-stroke
• Yamaha L140 two-stroke
• Yamaha 150HP carburetted V6
• Yamaha L150 carburetted V6
• Yamaha 175HP carburetted V6
• Yamaha 200HP carburetted V6
• Yamaha L200 carburetted V6
• Yamaha 220HP carburetted V6
• Yamaha 225HP carburetted V6
• Yamaha 115HP and 130HP applications from approximately 1985-2003
• Yamaha 150HP to 225HP early oil-injection applications where 6E5-85740-02-00 is specified
• HP Range: 100HP - 225HP
• Engine Type: Yamaha carburetted oil-injected V4 and V6 two-stroke outboard
• Year Range: Approximately 1985-2003

🔌 Function

The control unit receives oil-level switch inputs and operates the remote oil-transfer pump. It also activates the audible warning and engine-speed reduction system when a low-oil or transfer fault is detected.

⚠️ Common Signs of Failure

• Engine oil tank does not refill automatically
• Remote oil pump runs continuously
• Oil-warning alarm remains active with adequate oil present
• Engine enters low-oil speed reduction incorrectly
• No warning occurs when the oil level is low
• Control-unit output to the transfer pump is missing
• Wiring and oil-level switches test correctly but the system remains inoperative

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 6E5-WS857-00-00 → Supersedes 6E5-85740-02-00
• 6E5-85740-02-00 → Supersedes 6E5-85740-01-00
• 6E5-85740-01-00 → Supersedes 6E5-85740-00-00
• 6E5-85740-00-00 earlier OEM control-unit reference

OEM / Related Numbers

• 6E5-WS857-00-00
• 6E5-85740-02-00
• 6E5857400200
• 6E5-85740-01-00
• 6E5-85740-00-00
• 6E5-85740-02
• 6E5WS8570000

Aftermarket / Verified Equivalents

• No aftermarket equivalent

📦 Condition

• Genuine used part
• Removed from running engine where applicable
• In good working condition unless otherwise stated