Universal Parts 2-Stroke Starter Motor - 9 Splines

Get your 50cc 2-stroke scooter starting reliably again with this Universal Parts Electric Starter Motor. Designed for Minarelli 1PE40QMB Jog-style engines, this is the motor that spins your engine over when you press the starter button. A worn or failed starter motor causes slow cranking, grinding, or a complete no-start — this is a direct bolt-on replacement that restores clean, fast starts.

The 9-spline shaft engages the starter clutch gear on the engine, and the 64mm bolt hole spacing matches the standard Minarelli Jog mounting pattern. Clockwise rotation matches the OEM spec.

Specifications

• Bolt Hole Spacing: 64mm
• Bolt Hole Diameter: 7mm
• Shaft Diameter: 9mm
• Splines: 9
• Rotation: Clockwise
• Engine: Minarelli 1PE40QMB 50cc 2-stroke

Compatibility

Fits Minarelli 1PE40QMB and Jog-style 50cc 2-stroke engines, including scooters from Yamaha, MBK, Aprilia, Derbi, and other brands using the Minarelli horizontal 50cc 2-stroke platform with a 9-spline starter shaft.

Fitment Tip: Before ordering, verify your existing starter has 9 splines on the shaft and 64mm bolt hole spacing. Some Jog-style engines use a 10-spline or 11-spline starter — spline count must match your starter clutch gear.

California Prop 65 Warning: www.p65warnings.ca.gov

• 9-spline shaft engages starter clutch gear on Minarelli 1PE40QMB Jog engines
• 64mm bolt hole spacing — direct bolt-on for standard Minarelli Jog mounting pattern
• Clockwise rotation matches OEM spec
• Verify spline count before ordering — some Jog engines use 10 or 11 splines

Bolt Hole Spacing: 64mm | Bolt Hole Diameter: 7mm | Shaft Diameter: 9mm | Splines: 9 | Rotation: Clockwise | Engine: Minarelli 1PE40QMB 50cc 2-stroke | Origin: China

Minarelli 1PE40QMB Jog-style 50cc 2-stroke engines with 9-spline starter shaft. Fits Yamaha Jog 50, Zuma 50 (pre-2012), MBK Booster, Aprilia SR 50 (Minarelli), Derbi Atlantis, and other Minarelli horizontal 50cc 2-stroke platforms. Verify spline count before ordering.