The need for injector service on a normally maintained boat diesel should only need be checked every thousand hours or so.
True on a modern engine, but my Perkins 4-108 recommends overhauling the injectors every 400 hours.
In addition to one spare injector I carry plenty of spare belts, impellers, a spare alternator
, spare starter, spare heat-exchanger, spare head
(complete except bowl), over haul kit for head
, spare bilge pump
, spare float switch, spare zinks for prop shaft, heat exchanger
bearings, etc. Also spare water, oil, and fuel filters...And a bunch of other spare parts
, can't even list 'em..Too long of a list..The boat is heavy and slow but she will get there adventually as there is a spare for just about everything that can go wrong.