# 689-81800-12 Yamaha Starter Motor | Genuine Used Part

🔧 Product Description

  

Genuine Yamaha Starter Motor Assembly - Part Number: 689-81800-12

  

A genuine Yamaha starter motor assembly used on Yamaha 25HP, 30HP and 40HP two-stroke outboards. This 12-volt, 9-tooth starter motor family is commonly associated with Hitachi S108-80 style starter systems.

  

⚙️ Key Features

  

• Genuine Yamaha starter motor assembly

• Correct Yamaha part number 689-81800-12

• Supersedes earlier 689-81800-10 and 689-81800-11 starter references

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

• 12-volt, 9-tooth starter family

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 689-81800-12 later Yamaha starter motor assembly reference

• 689-81800-11 related earlier starter motor assembly reference

• 689-81800-10 earlier Yamaha starter motor assembly reference

  

OEM / Related Numbers:

  

• 689-81800-12

• 689-81800-12-00

• 689818001200

• 689-81800-11

• 689-81800-11-00

• 689-81800-10

• 689-81800-10-00

• Hitachi: S108-80

• S108-80 starter reference

  

Aftermarket / Verified Equivalents:

  

• Aftermarket reference: 689-81800-12

• Aftermarket Hitachi-style reference: S108-80

• Marine replacement starter for Yamaha 25HP / 30HP / 40HP two-stroke applications

  

🚤 Compatibility

  

Commonly used on:

  

• Yamaha 25HP to 40HP two-stroke electric-start systems

• Yamaha 689-series starter motor applications

  

Typically suits:

  

• Engine models:

• Yamaha 25HP two-stroke starter applications

• Yamaha 25N / 25D / 25MLH / 25ELH applications where 689-81800-12 is specified

• Yamaha 30HP two-stroke starter applications

• Yamaha 30D / 30DE / 30MLH / 30ELH applications using the 689 starter family

• Yamaha C30 / C40 two-stroke starter applications

• Yamaha C30ELR / C40ELR / C40ESH / C40MLH starter systems

• Yamaha 40HP two-stroke starter applications where 689-81800-12 is specified

  

• HP Range: commonly 25HP - 40HP

• Engine Type: Yamaha two-stroke outboard

• Year Range: approximately 1984-1997, with later model-specific applications where listed

• Starter Type: 12V, 9-tooth starter motor family

  

🔌 Function

  

The starter motor provides electric cranking power by engaging the flywheel and rotating the engine during starting.

  

Common signs of failure:

  

• Starter clicks but does not crank

• Slow cranking despite good battery voltage

• Starter drive not engaging

• Grinding noise at flywheel

• Intermittent starting fault

• Worn brushes, bushings, armature or starter gear

  

📦 Condition

  

• Genuine used part

• Removed from running engine where applicable

• In good working condition unless otherwise stated

## Details

- **Price:** 75.0 AUD
- **Vendor:** Sawley's Auto and Marine
- **Tags:** Sawley’s AAM Used Parts – Starter Motors | Marine Starter Motors & Cranking Systems

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 75.00 AUD | In stock |

## Images

- 689-81800-12 Yamaha Starter Motor | Genuine Used Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/689-81800-12-yamaha-starter-motor-genuine-used-part)
> Updated: 2026-07-06