# 689-85540-22-00 Yamaha CDI | Genuine Used Part

🔧 Product Description

  

Genuine Yamaha CDI Unit Assembly - Part Number: 689-85540-22-00

  

A genuine Yamaha CDI ignition unit used on selected Yamaha 25HP, 30HP and 40HP two-stroke outboards. This CDI module controls ignition timing and spark output for compatible 2-cylinder engines.

  

⚙️ Key Features

  

• Genuine Yamaha CDI unit assembly

• Correct Yamaha part number 689-85540-22-00

• Related to 689-85540-20-00, 689-85540-21-00 and 689-85540-29-00

• Used on selected Yamaha 25HP, 30HP and 40HP two-stroke engines

• Cross-references with CDI Electronics 117-689-21

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 689-85540-29-00 related Yamaha CDI reference

• 689-85540-22-00 listed Yamaha CDI reference

• 689-85540-21-00 earlier Yamaha CDI reference

• 689-85540-20-00 earlier Yamaha CDI reference

  

OEM / Related Numbers:

  

• 689-85540-22-00

• 689855402200

• 689-85540-22

• 6898554022

• 689-85540-20-00

• 689-85540-21-00

• 689-85540-29-00

• CDI unit assembly

• Ignition CDI

• Ignition control unit

  

Aftermarket / Verified Equivalents:

  

• CDI Electronics: 117-689-21

  

🚤 Compatibility

  

Commonly used on:

  

• Yamaha 2-cylinder two-stroke ignition systems

  

Typically suits:

  

• Engine models:

• Yamaha 25HP two-stroke - 1984-1990

• Yamaha 30HP two-stroke - 1984-1990

• Yamaha 40HP two-stroke - 1984-1990

• Yamaha 25HK international model

• Yamaha 30A international model

• Yamaha 689-series 2-cylinder ignition systems using 689-85540-22-00

  

• HP Range: 25HP - 40HP

• Engine Type: Yamaha 2-cylinder two-stroke outboard ignition system

• Year Range: approximately 1984 - 1990

• Serial Note: Match by Yamaha model code, original CDI number, plug layout and ignition-system diagram.

  

🔌 Function

  

The CDI unit stores and releases ignition energy, controlling spark timing and coil triggering for the engine.

  

Common signs of failure:

  

• No spark

• Weak or intermittent spark

• Hard starting

• Engine cuts out when warm

• Misfire under load

• Spark returns when a known-good CDI is fitted

• Heat or water damage to CDI wiring

  

📦 Condition

  

• Genuine used part

• Removed from running engine where applicable

• In good working condition unless otherwise stated

## Details

- **Price:** 50.0 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 | 50.00 AUD | In stock |

## Images

- 689-85540-22-00 Yamaha CDI | Genuine Used Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/689-85540-22-00-yamaha-cdi-genuine-used-part)
> Updated: 2026-07-02