My 1999 Honda 40’s were still running strong in 2019, when I traded them in for Honda 60’s. If my cruising was more of a local nature & not so extreme in remote locations, I would still be running them. With good maintenance, past 2000 hours should be normally made with out major repair. Mine were approaching 2400 hours & like I previously said still running strong with out major repairs.
The boat rental at Bridge Bay on Yellowstone Lake has a fleet of 19 foot aluminum boats with 40 hp Honda motors. The mechanic there responsible for their care told me they are replaced at 2000 hours. He also stated they had never had a major repair on one one of their 40 hp Honda motors with less then 2000 hours. These rentals take a beating & are out of service due to the seasonal operation about 9 months of the year.
Jay