6F5-85540-22 CDI Ignition Control Unit

THH-2081 | High-Performance CDI for Yamaha 40HP 2-Stroke Outboard Motors

Stable Ignition | Fast Response | High Reliability | Twin-Cylinder Ignition Control | Made in Taiwan

The Xing Hua CDI 6F5-85540-22 Ignition Control Unit is engineered specifically for Yamaha 40HP 2-stroke 2-cylinder outboard motor ignition systems. Designed to match Yamaha OEM 6F5-85540-22-00 CDI Unit Assembly, it delivers reliable electronic ignition control.

This CDI series is mainly applied to Yamaha 40HP 2-stroke outboard motors. Public references indicate that 6F5-85540-22-00 replaces 6F5-85540-21-00 and is compatible with select E40 International series engines.

Features

⚡ High-Performance Electronic Ignition

Quickly receives and processes signals from the engine flywheel magneto and trigger coil. Internal electronic control circuits manage precise ignition timing, driving the ignition coil to generate consistent high-voltage sparks.

🔥 Stable Twin-Cylinder Ignition Control

Tailored for 40HP 2-stroke 2-cylinder outboard ignition systems. Provides balanced twin-cylinder ignition control to support smooth starting, steady idling, and dependable high-RPM operation.

Note: Public product documentation classifies 6F5-85540-22 as a 40HP, 2-Stroke, 2-Cylinder Outboard CDI.

🚤 Marine-Grade Durable Construction

Engineered with reinforced electronic components and protective encapsulation to withstand harsh marine operating environments, including:

• Humidity & Moisture

• Vibration & Shock

• Salt Spray & Corrosion

• Temperature Fluctuations

• Continuous High-RPM Operation

🛠️ OEM Replacement Solution

Directly corresponds to Yamaha OEM:

• 6F5-85540-22-00

Cross-Reference Part Numbers:

• 6F5-85540-22-00

• 6F5-85540-21-00 (Superseded by 6F5-85540-22-00)

• 6F5-85540-23-00

 Product Specifications

Item	Specification
Product Name	6F5-85540-22 CDI Ignition Control Unit
Xing Hua Model	THH-2081
Type	CDI (Capacitor Discharge Ignition)
OEM Reference	6F5-85540-22-00
Predecessor Part No.	6F5-85540-21-00
Related Part Nos.	6F5-85540-23-00
Engine Compatibility	Yamaha 2-Stroke Outboard Motors
Horsepower Rating	40HP
Engine Type	2-Stroke
Cylinder Count	2-Cylinder
Ignition System	Electronic CDI
Application	Outboard Motors
Environmental Protection	Anti-vibration, Moisture-proof, Environmentally Resistant
Country of Origin	Taiwan

Core Functions

Ignition Control Flow

$$text{Magneto / Trigger Signal} longrightarrow text{CDI Control} longrightarrow text{Ignition Coil} longrightarrow text{Spark Plug} longrightarrow text{Combustion}$$

1. The CDI receives pulse signals from the magneto flywheel and trigger sensors.

2. Internal control circuitry determines precise timing and fires high-voltage output through the ignition coils.

3. The spark plug ignites the air-fuel mixture within the combustion chamber to complete the 2-stroke cycle.

4. Serves as a vital control module within the electronic ignition system of twin-cylinder 40HP outboard engines.

Applications & Compatibility

Yamaha 40HP Outboard Series

Mainly applies to select Yamaha models:

• 40HP 2-Stroke Outboard Motors

• 2-Cylinder Engines

• E40 International Models

• K40J Series

• E40J Series

• E40G Series

• EK40J Series

• Other compatible models using the 6F5-85540 CDI series

Reference data indicates compatibility with K40J, E40J, E40G, and EK40J 40HP 2-stroke engines (e.g., K40J 1993–2002; E40J / E40G / EK40J 2003).

Additionally, third-party databases (such as CDI Electronics) cross-reference 6F5-85540-21 / -22 for 1989–1997 E40 International engines.

Caution: Electrical connectors, wiring harnesses, and ignition specifications may vary depending on model year, region, or engine revision. Always verify your original OEM part number and complete Yamaha Model Code prior to purchase and installation.

Key Advantages

Xing Hua Technology | Taiwan Electronic Ignition Solutions

Delivering reliable electronic ignition components built specifically for 2-stroke marine engines.

• ✔ Taiwan R&D and Manufacturing

• ✔ Engineered for Yamaha 40HP 2-Stroke Applications

• ✔ Twin-Cylinder Electronic Ignition Control

• ✔ Consistent & Powerful Spark Output

• ✔ Optimized for High-RPM Engine Operation

• ✔ High-Reliability Automotive/Marine Grade Components

• ✔ Rugged Protective Enclosure for Marine Conditions

• ✔ Direct OEM Replacement Solution

• ✔ Ideal for Marine Repair Shops & Aftermarket Replacement

• ✔ Custom OEM/ODM Development Available Upon Request

Contact Us

• Company: Hsin Hua Electric Innovation Co., Ltd.
• Address: No.1, Anxin 2nd Rd, Andong Village, Annan Dist., Tainan City 709007, Taiwan
• Phone: +886-6-2456156
• Website: www.thh-electric.com.tw

We also offer the following CDI (Capacitor Discharge Ignition) products.

1️⃣ SUZUKI

• 32900-93911 ➝ 9.9 / 15 HP
• 32900-94470 ➝ 40 HP

2️⃣ TOHATSU

• 3G2-06060-2 ➝ 9.9 / 15 / 18 HP

3️⃣ YAMAHA

• 63V-85540-00 / 63V-85540-01 ➝ 9.9 / 15 HP
• 66T-85540-00 / 66T-85540-01 ➝ 40 HP
• 688-85540-00 ➝ 75 HP
• 688-85540-16 ➝ 75 / 90 HP
• 695-85540-10 / 695-85540-12 ➝ 15 / 25 HP
• 6B4-85540-01 / 6B4-85540-02 ➝ 9.9 / 15 HP
• 6E5-85540-00 ➝ 115 HP
• 6E5-85540-12 ➝ 115 / 130 HP
• 6F5-85540-22 ➝ 40 HP
• 6F6-85540-00 / 6F6-85540-01 ➝ 40 HP
• 6G5-85540-12 ➝ 150 / 175 / 200 HP
• 6G6-85540-00 ➝ 200 / 225 HP