# 67F-85540-00-00 Yamaha ECU CDI | Genuine Used Part

🔧 Product Description

  

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

  

A genuine Yamaha CDI / ignition control unit used on selected Yamaha F80 and F100 four-stroke outboards. This unit controls ignition timing and spark-trigger output by processing engine speed and timing signals from the ignition system. It is a critical electrical component and must be matched by exact part number, model code, serial number and connector layout before installation.

  

⚙️ Key Features

  

• Genuine Yamaha CDI unit assembly

• Correct Yamaha part number 67F-85540-00-00

• Used on selected Yamaha F80 and F100 four-stroke outboards

• Supports the 67F CDI ignition-control family

• Exact fitment depends on model, year, serial number and plug configuration

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 67F-85540-03-00 later related 67F CDI service reference

• 67F-85540-01-00 intermediate related 67F CDI service reference

• 67F-85540-00-00 earlier CDI unit assembly reference

  

OEM / Related Numbers:

  

• 67F-85540-00-00

• 67F855400000

• 67F-85540-00

• 67F8554000

• 67F-85540-01-00

• 67F855400100

• 67F-85540-03-00

• 67F855400300

• Related electrical component family: 67F CDI ignition system

• Related F80 / F100 electrical-system reference

  

Aftermarket / Verified Equivalents:

  

• No aftermarket equivalent

  

🚤 Compatibility

  

Commonly used on:

  

• Yamaha F80 and F100 four-stroke outboard ignition systems

  

Typically suits:

  

• Engine models:

• Yamaha F80 - 1999 electrical system using 67F CDI family

• Yamaha FT80TRX - 1999 electrical system using 67F CDI family

• Yamaha F80A - 1999 electrical system using 67F CDI family

• Yamaha F80AET

• Yamaha F80AETL

• Yamaha F100 - 1999 electrical system using 67F CDI family

• Yamaha F100TRX - 1999 electrical system using 67F CDI family

• Yamaha F100AET

• Yamaha F100AETL

• Yamaha F100 - 2000 electrical system using 67F CDI family

  

• HP Range: 80HP - 100HP

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

• Year Range: Approximately 1999 - 2000 for the 67F-85540-00-00 reference, with later replacement by 67F-85540-01-00 / 67F-85540-03-00 where specified

• Serial Note: Final fitment must be checked against the serial-numbered Yamaha electrical diagram and the CDI label fitted to the engine.

  

🔌 Function

  

The CDI unit receives ignition charge and timing signals, then triggers the ignition coils at the correct point for engine speed and load.

  

Common signs of failure:

  

• No spark on one or more cylinders

• Intermittent spark loss when hot

• Hard starting or no-start condition

• Misfire at idle or under load

• Ignition timing fault after pulser and charge coil testing

• Engine cutting out without fuel-system fault

• Water ingress, heat damage or corrosion at CDI connectors

  

📦 Condition

  

• Genuine used part

• Removed from running engine where applicable

• In good working condition unless otherwise stated

## Details

- **Price:** 250.0 AUD
- **Vendor:** Sawley's Auto and Marine
- **Tags:** Sawley’s AAM Used Parts – Electronic Components | ECU CDI & Electrical Parts

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 250.00 AUD | In stock |

## Images

- 67F-85540-00-00 Yamaha ECU CDI | Genuine Used Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/67f-85540-00-00-yamaha-ecu-cdi-genuine-used-part)
> Updated: 2026-06-29