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Yamaha Starter Motors

Starter Motor For Yamaha JET-SKI Boat WAVERUNNER XL760 GP760 MJ760 WB760 WAVEBLASTER

SKU: MXST-U409

$330.00
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The U409 is a 12-volt aftermarket replacement starter motor designed for selected 760cc 2-stroke personal watercraft engines. Featuring a 9-spline drive, clockwise rotation and permanent magnet direct drive construction, it provides dependable electric engine cranking. Suitable for replacing worn, damaged or faulty original starter assemblies, this marine-grade unit offers a practical replacement for compatible personal watercraft requiring the correct mounting and electrical configuration.

Key benefits

Key Benefits

  • - 12V electric starter motor
  • - 9-spline starter drive
  • - Clockwise (CW) rotation
  • - Permanent Magnet Direct Drive (PMDD) construction
  • - Suitable for selected 760cc personal watercraft
  • - Replacement for original starter motor assembly
  • - Suitable for maintenance and engine repairs

Specifications & Dimensions

  • - Part Number: U409
  • - Product Type: Electric Starter Motor
  • - Voltage: 12V DC
  • - Drive Configuration: 9 spline
  • - Rotation Direction: Clockwise (CW)
  • - Starter Design: Permanent Magnet Direct Drive (PMDD)
  • - Starter Style: Mitsuba
  • - Engine Capacity: 760cc
  • - Engine Type: 2-Stroke

Compatible Personal Watercraft

  • Yamaha – 760cc 2-Stroke
  • - Yamaha WaveRunner 760cc – selected models
  • - Yamaha WaveBlaster 760cc – selected models
  • - Yamaha WaveRaider 760cc – selected models
  • The supplier identifies these three model families but does not publish specific production years or individual model codes. Confirm the original starter number before ordering.

Cross-Reference / Replacement Part Numbers

  • Yamaha OEM References
  • - 64X-81800-00-00

Signs the Starter Motor Needs Replacing

  • - Engine fails to crank despite a fully charged battery
  • - Clicking noise when pressing the start button
  • - Slow or intermittent engine cranking
  • - Grinding or unusual noises during starting
  • - Excessive starter motor heat
  • - Worn or damaged starter drive splines
  • - Corroded electrical terminals or damaged starter housing

Important Fitment Information

  • - Confirm 12V electrical operation.
  • - Verify the 9-spline starter drive.
  • - Confirm clockwise (CW) rotation.
  • - Compare the original starter with OEM part number 64X-81800-00-00.
  • - Check the watercraft model, engine configuration and production year.
  • - Verify mounting dimensions and electrical connections before installation.
  • - This is a personal watercraft starter motor, not an outboard motor starter.
  • - Not suitable for every model within the listed watercraft families.

Shipping

Ships Australia-wide