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9-Tooth Starter Motor for Yamaha TMAX 500 530 XP500 XP530 4B5-81890-00
9-Tooth Starter Motor for Yamaha TMAX 500 530 XP500 XP530 4B5-81890-00
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Product Overview
Replace a worn, weak, noisy, or failed starter motor with this 9-tooth electric starter motor, designed for select Yamaha TMAX 500 / XP500 and TMAX 530 / XP530 scooter applications using OEM reference number 4B5-81890-00-00.
The starter motor helps crank the engine when the electric start button is pressed. A failing starter motor may cause slow cranking, clicking, no-crank problems, intermittent starting, grinding noise, or failure to start even when the battery is fully charged.
This replacement starter motor features a 9-tooth gear and CCW rotation based on supplied product data. Please compare your original starter motor’s tooth count, rotation direction, mounting points, electrical terminal, body shape, gear position, and OEM number before ordering.
Product Compatibility
| Make | Model | Year Range | OEM / Reference Number | Fitment Notes |
|---|---|---|---|---|
| Yamaha | TMAX 500 / XP500 | 2008–2011 | 4B5-81890-00 / 4B5-81890-00-00 | Main fitment; confirm original starter gear and body shape |
| Yamaha | TMAX 500 ABS / XP500A | Select 2008–2016 applications | 4B5-81890-00-00 | Verify 9-tooth gear, terminal, and mounting layout |
| Yamaha | TMAX 530 / XP530 | 2012–2016 | 4B5-81890-00-00 | Main TMAX 530 fitment; compare original starter before ordering |
| Yamaha | T-MAX / TMAX Maxi Scooter Platform | Select applications | 4B5-81890-00-00 / related references | Fitment depends on year, market, and original starter design |
Important Fitment Note:
This part is not selected by scooter name alone. Yamaha TMAX 500, TMAX 530, XP500, XP500A, and XP530 models may use different starter motors depending on year, market, engine version, gear count, rotation direction, mounting points, and electrical terminal style. Please confirm your original starter motor matches OEM 4B5-81890-00-00, the 9-tooth gear, CCW rotation, and overall shape before ordering.
Specifications
| Specification | Details |
| Product Type | Electric Starter Motor |
| Compatible Brand | Yamaha |
| Main Compatible Models | TMAX 500 / TMAX 530 |
| Platform | XP500 / XP500A / XP530 |
| Tooth Count | 9 Teeth |
| Rotation Direction | CCW |
| Main OEM Reference | 4B5-81890-00-00 |
| Short OEM Format | 4B5-81890-00 |
| Compact OEM Format | 4B5818900000 |
| Supplier-Listed Reference | 1781090, verify before purchase |
| Common Vehicle Type | Maxi Scooter / Scooter Motorcycle |
| Application | Electric Starting System |
| Fitment Type | Replacement, match by OEM number, tooth count, rotation, and mounting style |
Key Features
- 9-tooth electric starter motor for select Yamaha TMAX 500 and TMAX 530 scooter applications
- Designed for matching XP500, XP500A, and XP530 starter systems
- Replaces Yamaha starter motor reference 4B5-81890-00-00
- Helps restore electric start function when the original starter motor is weak, worn, noisy, or failed
- Precision-built replacement style supports stable cranking performance
- Durable starter motor construction for long service life under normal use
- Direct replacement style, but original gear count, rotation direction, terminal type, and mounting layout must be checked before installation
OEM Cross Reference
| OEM / Reference Number | Notes |
| 4B5-81890-00 | Short Yamaha starter motor reference |
| 4B58189000 | Compact format of 4B5-81890-00 |
| 4B5-81890-00-00 | Main full Yamaha OEM starter motor reference |
| 4B5818900000 | Compact format of 4B5-81890-00-00 |
| 5GJ-81890-00-00 | Earlier / related Yamaha TMAX 500 starter reference on some aftermarket listings; verify before purchase |
| 5GJ818900000 | Compact format of 5GJ-81890-00-00 |
| 1781090 | Supplier-listed / aftermarket reference; verify carefully |
Please use the OEM/reference number together with physical fitment checks. If your original starter motor has a different gear tooth count, rotation direction, shaft style, mounting hole layout, electrical terminal, or body shape, this part may not fit.
Condividi
Domande frequenti sulla compatibilità
Questa parte è compatibile con il mio modello e anno specifici?
This starter motor is designed for select Yamaha TMAX 500 / XP500 and TMAX 530 / XP530 scooter applications when the original starter matches OEM 4B5-81890-00-00 and the 9-tooth CCW design. Please compare your original starter motor’s part number, tooth count, rotation direction, body shape, mounting points, and electrical terminal before ordering.
Devo corrispondere al numero di parte OEM?
Yes, matching the OEM or reference number is strongly recommended. This starter motor replaces Yamaha 4B5-81890-00-00 and related compact format 4B5818900000. Some aftermarket listings may also reference 5GJ-81890-00-00. However, OEM number alone is not enough. Please also confirm the 9-tooth gear, CCW rotation, mounting layout, shaft position, and terminal style.
A quali modelli o situazioni non si adatta questa parte?
This part does not fit Yamaha TMAX, XMAX, Majesty, CP250, YP250, YP400, Honda, Kymco, GY6, or other scooter models that use a different starter gear count, different rotation direction, different shaft length, different mounting holes, different terminal style, or different starter body. It is also not a replacement for the battery, starter relay, starter clutch, stator, ignition coil, CDI / ECU, or complete engine kit.
Cosa dovrei controllare prima di ordinare?
Before ordering, please check your scooter’s make, model, year, engine code if available, original starter motor OEM number, tooth count, rotation direction, mounting hole layout, electrical terminal, shaft position, starter body shape, and available installation space. For best fitment, compare the product photos and specifications with your original starter motor before purchase.