6H1-81950-01 Yamaha Trim Unit | Genuine Used Part

🔧 Product Description

Genuine Yamaha Power Trim Relay Assembly - Part Number: 6H1-81950-01-00

A genuine Yamaha power tilt and trim relay assembly for selected 25HP to 90HP two-stroke and four-stroke outboards. Although the inventory title describes a trim unit, part number 6H1-81950-01 identifies the electrical relay that switches battery power to the trim motor in the UP and DOWN directions.

⚙️ Key Features

• Genuine Yamaha OEM power-trim relay assembly
• Correct service number 6H1-81950-01-00
• Reverses trim-motor polarity for UP and DOWN operation
• Used on selected Yamaha 25HP to 90HP two-stroke and four-stroke engines
• Cross-references with Sierra and specialist marine-electrical replacements

🚤 Compatibility

Commonly used on

• Yamaha two-wire power tilt and trim motor circuits
• Outboards using the 6H1 trim-relay mounting and connector arrangement

Typically suits

• Engine models:
• Yamaha 25Q two-stroke
• Yamaha 40H two-stroke
• Yamaha 40V two-stroke
• Yamaha 40Y two-stroke
• Yamaha 50D two-stroke
• Yamaha 50H two-stroke
• Yamaha 60F two-stroke
• Yamaha 70B two-stroke
• Yamaha 75A two-stroke
• Yamaha 80A two-stroke
• Yamaha 85A two-stroke
• Yamaha 90A two-stroke
• Yamaha F30A / F30AET - approximately 2001-2009
• Yamaha F40A / F40B / F40C - approximately 1998-2009
• Yamaha F40EHX / F40TRX
• Yamaha F50A / F50AET - approximately 1995-2006
• Yamaha FT50B / T50FTBET - approximately 1998-2009
• Yamaha FT50C / T50FTCET - approximately 1998-2009
• Yamaha F50D
• Yamaha F60A / F60AET - approximately 2002-2006
• Yamaha FT60B / T60FTBE - approximately 2003-2006
• HP Range: 25HP - 90HP
• Engine Type: Yamaha carburetted two-stroke and four-stroke outboard with electric power trim
• Year Range: Approximately 1992-2019, dependent on model

🔌 Function

The relay receives low-current commands from the trim switch and switches high-current battery power to the trim motor. Its reversing contacts change motor polarity so the hydraulic pump can raise or lower the engine.

⚠️ Common Signs of Failure

• Trim works in only one direction
• Clicking relay with no trim-motor operation
• No relay click when the trim switch is pressed
• Intermittent trim operation
• Burnt, corroded or overheated terminals
• Voltage present at the relay but not at the motor
• Trim motor operates when bridged but not through the relay

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 6H1-81950-01-00 → Supersedes 6H1-81950-00-00
• 6H1-81950-00-00 earlier OEM trim-relay reference

OEM / Related Numbers

• 6H1-81950-01-00
• 6H1-81950-01
• 6H1-81950-00-00
• 6H1-81950-00
• Yamaha 6H1-series power-trim motor and relay harness references
• Yamaha two-wire trim-motor relay configuration

Aftermarket / Verified Equivalents

• Sierra: 18-1524
• OutboardParts: SLC2061
• Marine electrical aftermarket: 6H1-81950-01 replacement relay

📦 Condition

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