there is no easy answer. if we knew more about the motor we may be able to find the same motor somewhere else. we would need to know the shaft length above all else
i think the possible 8 weeks wait for a part with no guarentee should put him off buying odd branded products
just suggest he replaces it with a known main brand that way spares. if needed, would not be a problem. Also tell him to research guarentees as some model give 2 years, albeit needing to be registered but others only have 1
Dave