guy48065
Chief Petty Officer
- Joined
- Aug 31, 2008
- Messages
- 437
Today I received a service manual I'd ordered and practically on page one I'm asking WTF?
How can these different years of the same outboard with very different displacement and rpm specs produce the same "BIA" power?
Looks to me like the older spec was significantly rounded UP to claim 5 hp
![20230911_165651.jpg 20230911_165651.jpg](https://forums.iboats.com/data/attachments/389/389210-c832527c84dfe89f885566eedb52efac.jpg)
How can these different years of the same outboard with very different displacement and rpm specs produce the same "BIA" power?
Looks to me like the older spec was significantly rounded UP to claim 5 hp
![20230911_165651.jpg 20230911_165651.jpg](https://forums.iboats.com/data/attachments/389/389210-c832527c84dfe89f885566eedb52efac.jpg)
Last edited: