67C-85540-01-00 Yamaha CDI Unit | Genuine Used Part

🔧 Product Description

Genuine Yamaha CDI Unit Assembly - Part Number: 67C-85540-01-00

A genuine Yamaha CDI unit used on selected F30 and F40 four-stroke outboard ignition systems. This module controls ignition timing and spark triggering for compatible Yamaha 67C electrical systems.

⚙️ Key Features

• Genuine Yamaha CDI unit assembly

• Correct Yamaha part number 67C-85540-01-00

• Used on selected Yamaha F30 and F40 four-stroke outboards

• Cross-reference family includes 67C855400100 and 878435 / 878430-style references

• Must be matched by exact model code, serial number and connector layout

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 67C-85540-01-00 current / listed CDI unit assembly reference

OEM / Related Numbers:

• 67C-85540-01-00

• 67C855400100

• 67C-85540-01

• 67C8554001

• 878435

• 878430

• 878435A1

• Related F30 / F40 carburettor wire harness ignition reference

• Related Yamaha 67C electrical-system family reference

Aftermarket / Verified Equivalents:

• No aftermarket equivalent

🚤 Compatibility

Commonly used on:

• Yamaha F30 / F40 four-stroke outboard ignition systems

Typically suits:

• Engine models:

• Yamaha F30 four-stroke applications using 67C-85540-01-00

• Yamaha F30A applications using 67C CDI unit assembly

• Yamaha F40 four-stroke applications using 67C-85540-01-00

• Yamaha F40A applications using 67C CDI unit assembly

• Yamaha F30 / F40 carburettor ignition-system applications using 67C-85540-01-00

• Yamaha 25HP / 30HP / 40HP four-stroke 67C-family ignition packages where the serial-numbered electrical diagram specifies this CDI

• HP Range: commonly 30HP - 40HP, with related 67C-family use in 25HP / 30HP / 40HP systems where specified

• Engine Type: Yamaha three-cylinder four-stroke outboard

• Year Range: Approximately 2001 - 2008 for common F30 / F40 67C CDI applications

• Serial Note: Confirm exact Yamaha model code, serial number, CDI label and connector layout before fitting.

🔌 Function

The CDI controls spark timing by processing ignition charging and timing signals, then triggering the ignition coil circuit at the correct engine position.

Common signs of failure:

• No spark

• Intermittent spark when hot

• Hard starting or no-start condition

• Misfire at idle or acceleration

• Weak spark after coil, stator and pulser testing

• Ignition timing fault isolated to CDI output

• Water or corrosion damage at CDI connector

📦 Condition

• Genuine used part

• Removed from running engine where applicable

• In good working condition unless otherwise stated