Fuel pump bracket breakdown causes stalling (recall)
A resin bracket inside the fuel pump breaks down and jams the pump, and the engine can stall without warning — Honda recalled these bikes twice for it (NHTSA 14V672000 and 16V661000). Groms trade hands constantly and recall work often gets skipped, so run the VIN before buying. A bike that stumbles or dies at idle during the test ride likely never got the fix.
Ask for repair records covering this item. If it hasn't been addressed and the car is in or near the mileage window, price the up to $300 repair into your offer — or make it the seller's problem.