Yamaha YB125 12 V 9-Tooth Starter Motor
Replacement electric starter motor for selected Yamaha YB125 applications using the same 3D9 starter family as compatible YBR125 models. Supplied as the complete starter assembly shown.
What Is Supplied
- 1 complete electric starter motor assembly
- 9-tooth starter drive pinion / output shaft
- Cast front and rear starter housings
- Two mounting lugs / mounting holes
- Electrical power terminal with insulated connection
- Front sealing O-ring fitted to the drive end as shown
The starter relay/solenoid, battery leads, starter-idler gears, mounting bolts and engine gaskets are not included unless they are clearly shown in the photographs.
Specification
- Electrical system: 12 V
- Starter drive: 9 tooth
- Rotation: CCW / left-hand rotation
- Engine family: Yamaha YBR-pattern / selected 154FMI and 156FMI-5 derivatives
- Condition: new aftermarket replacement
Yamaha OE Reference Numbers
- 5VL-H1800-00-00 / 5VL-H1800-00
- 5VL-H1890-00-00 / 5VL-H1890-00
- 3D6-H1890-00-00 / 3D6-H1890-00
- 3D9-H1890-00-00 / 3D9-H1890-00
- 3D9-H1800-00-00 / 3D9-H1800-00
- 3D9-H1800-01-00 / 3D9-H1800-01
Manufacturer / Aftermarket Cross References
- CPL / China Parts: EL009000
- SGR: 174602 (17.4602)
- SGR EAN: 8434290540106
- MPW: MPW-YBR-017
- Dirt Racing reference: 19-0001.DR
OE and cross-reference numbers are supplied for identification only. The starter supplied is an unbranded aftermarket replacement and is not represented as a genuine Yamaha, SGR, CPL, MPW or Dirt Racing component.
Fitment
- Yamaha YB125 / YB125SPD applications using the 3D9-H1890-00 / 3D9-H1800-01 starter family
- Check the original OE number and 9-tooth starter layout before ordering
Important Compatibility Check
Starter motors can look very similar while using different mounting centres, drive gears or electrical terminals. Before ordering, compare the original starter with the photographs and check the 9-tooth pinion, mounting-lug positions, electrical terminal, overall body shape and OE/cross-reference number.
For Chinese-built motorcycles, check the stamped engine code as well as the model name. This listing is for the YBR-pattern starter used on the compatible 154FMI / 156FMI-5 family and specifically cross-referenced applications shown below.
Replacement Advice
A starter motor that turns slowly or fails to operate can also be caused by a weak battery, poor earth, corroded terminals, damaged wiring, a faulty starter relay/solenoid, starter-clutch problems or mechanical engine resistance. Check the starting circuit before replacing the motor.
Installation Notes
Disconnect the battery before installation. Clean the mounting and electrical-contact areas, lightly lubricate the sealing O-ring where appropriate, ensure the starter seats squarely in the crankcase and tighten fasteners to the motorcycle manufacturer's specification. Route and secure the electrical connection away from hot or moving parts.