Fr J Hackett
Well-Known Member
I have not read all the posts here but our current boat is fitted with a Yanmar engine.
The boatbuilders discarded the front engine guard-the one that stops rotating pulleys and belts injuring wandering hands.
The reason they did this is clear to me.
If they had not, it would not be possible to remove it for belt and alternator service with the engine installed.
If the OP's boat's Yanmar has this cover guard fitted and it cannot be removed in situ, that IS an installation fault.
Not being able to carry out a belt change could result in the loss of the vessel.
Out of interest how is the guard secured?