688-85540-12 Yamaha CDI Unit | Genuine Used Part
688-85540-12 Yamaha CDI Unit | Genuine Used Part
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🔧 Product Description
Genuine Yamaha CDI Unit - Part Number: 688-85540-12
A genuine Yamaha CDI ignition unit from the 688 two-stroke ignition family. This CDI is used on compatible Yamaha 75HP, 80HP, 85HP and related 3-cylinder two-stroke outboards requiring the 688-85540-12 control unit configuration.
⚙️ Key Features
- Genuine Yamaha CDI ignition unit
- Correct Yamaha part number 688-85540-12
- Part of the 688-85540 CDI family used on Yamaha 75HP to 90HP two-stroke applications
- Related replacement-family references include 688-85540-13, 688-85540-14, 688-85540-15 and 688-85540-16
- Must be matched by exact model code, ignition configuration and connector layout
🚤 Compatibility
Commonly used on
- Yamaha 75HP, 80HP and 85HP two-stroke CDI ignition systems using the 688 electrical family
Typically suits
- Engine models:
- Yamaha 75A 1990-1996 two-stroke applications using the 688 CDI family
- Yamaha C75TLR 1994-1996 applications using the 688 CDI family
- Yamaha E75MLH 1995-1996 applications using the 688 CDI family
- Yamaha 80A 1988-1991 applications using the 688 CDI family
- Yamaha 85A 1990-1996 applications using the 688 CDI family
- Yamaha C85TLR 1991-1996 applications using the 688 CDI family
- Yamaha CV85ETL 1989-1990 applications using the 688 CDI family
- Yamaha 90 ETL / 90 XL 1984-1987 applications using related 688 CDI-family replacement listings
- HP Range: commonly 75HP - 90HP depending on exact model and CDI family reference
- Engine Type: Yamaha three-cylinder two-stroke outboard CDI ignition
- Year Range: approximately 1984 - 1996 for the listed 688 CDI-family applications
- Fitment Note: connector count, charge-coil system and model code must match the removed CDI
🔌 Function
The CDI stores and releases ignition energy based on pulser-coil and charge-coil inputs, controlling spark timing and coil firing for the two-stroke ignition system.
⚠️ Common Signs of Failure
- No spark on one or more cylinders
- Intermittent ignition failure when warm
- Hard start or no-start condition
- Misfire, hesitation or poor acceleration
- Loss of ignition timing control after stator and pulser checks
- No tachometer signal where the CDI provides the pulse
- Damaged CDI case, connector pins or wiring
🔄 Supersession & Cross Reference
OEM Supersession Chain
- 688-85540-16 related later CDI family reference
- 688-85540-15 related CDI family reference
- 688-85540-14 related CDI family reference
- 688-85540-13 related CDI family reference
- 688-85540-12 earlier listing CDI reference
OEM / Related Numbers
- 688-85540-12
- 6888554012
- 688-85540-12-00
- 688-85540-13-00
- 688-85540-14-00
- 688-85540-15-00
- 688-85540-16-00
- Related aftermarket ignition pack reference: CDI Electronics 117-6301
Aftermarket / Verified Equivalents
- CDI Electronics: 117-6301
- Aftermarket replacement family: 688-85540-12-00 / 688-85540-13-00 style CDI
📦 Condition
- Genuine used part
- Removed from running engine where applicable
- In good working condition unless otherwise stated
Shipping & Delivery
Shipping & Delivery
Flat-rate shipping Australia-wide — $14.99 per order, no matter how many parts you add. Orders dispatch from our Kadina, South Australia store. Need it urgently or want to collect in person? Call us on 0412 532 984 before ordering.
Returns & Warranty
Returns & Warranty
14-day change-of-mind returns — if it's not right or you ordered the wrong part, send it back within 14 days in the condition you received it for a refund or exchange. Full details in our Refunds & Returns policy.
Not sure this fits?
Not sure this fits?
Ask us before you buy — we check part numbers and fitment every day. Call 0412 532 984 (Mon–Fri 8.30am–4.30pm) or message us through the contact page with your engine or vehicle details.
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