For Gy6 4Stroke 50Cc 139Qmb Scooter Tank Vip Jonway Motor Starter Clutch Gear US
For Gy6 4Stroke 50Cc 139Qmb Scooter Tank Vip Jonway Motor Starter Clutch Gear US
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Starter Clutch Gear for GY6 4-Stroke 50cc 139QMB Scooter Tank Vip Jonway Motor
This starter clutch gear is a replacement starting component that transfers turning force from the starter motor to the engine on GY6 4-stroke 50cc 139QMB scooters, including models from Tank, Vip, and Jonway.
Overview
This starter clutch gear is built to replace a worn or slipping starter clutch on GY6 4-stroke 50cc scooters running the 139QMB engine. It grips the flywheel during starting and releases once the engine catches, so the starter motor can turn the engine without dragging afterward. Owners of Tank, Vip, and Jonway scooters use this starter clutch gear for starting repairs and rebuilds.
Built For Performance
- Hardened gear teeth made to resist wear across repeated starts
- One-way clutch action engages the flywheel and releases at running speed
- Machined to fit GY6 139QMB starter housings directly
- Roller and spring assembly designed to hold starting torque
- Drop-in replacement following the original mounting layout
Fits These Machines
- for GY6 4-stroke 50cc scooters
- for 139QMB engine scooters
- for Tank scooters
- for Vip scooters
- for Jonway scooters
On-The-Job Use
- Replacing a starter clutch that slips or fails to turn the engine
- Engine rebuilds on GY6 4-stroke 50cc scooters
- Routine maintenance on daily commuter scooters
- Shop repairs on Tank, Vip, and Jonway models
Specs At A Glance
| Engine Family | GY6 139QMB |
| Displacement | 50cc |
| Stroke Type | 4-stroke |
| Component | Starter clutch gear |
Good To Know
Q: Will this starter clutch gear fit my scooter? A: It is made for GY6 4-stroke 50cc machines using the 139QMB engine, so confirm your engine code and starter housing style before ordering. Q: What else should I check during installation? A: Inspect the starter motor, flywheel teeth, and any gasket or seal at the cover, since worn parts nearby can shorten the life of the new clutch gear.
Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.
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