Magnetic-Coupling Water Pump - Honda Metropolitan CHF50 Service Manual

TECHNICAL FEATURES
MAGNETIC-COUPLING WATER PUMP
This scooter uses a magnetic-coupling water pump. Magnetic forces drive the impeller via the plastic case which separates
the coolant from the engine oil. A plastic collar acts as a bearing.
Compared to a conventional type water pump, this pump eliminates the mechanical seal, oil seal, and ball bearing, allow-
ing for a compact pump with reduced friction.
CAMSHAFT CAM SPROCKET MAGNET (DRIVE SIDE) MAGNET (DRIVEN SIDE)
IMPELLER
PLASTIC COLLAR
WATER PUMP SHAFT
20-2