Engine - Raymarine Hunter 33 Owners’ Notes

12. Engine

• Yanmar 29hp 3 cylinder diesel, with PYI dripless shaft seal and 3 blade fixed
prop.
• The companionway stairs lift and slide out to access the engine front for daily
engine "lookover". This "before engine start" shows us in one quick view any
black powder belt wear or loose belt, oil in bilge, or coolant spillage.
• Avoid excessive idling
• 2400 rpm is economy cruise (5.5 knots)
• 2600 rpm is normal cruise (6 knots)
• 2800 rpm is fast cruise (when fighting wind or waves)
• Please DO NOT exceed 3000 rpm (you are just wasting fuel and overworking
the engine)
The oil dipstick is on the left side of the engine. The engine is not known to use oil;
nevertheless, a spare quart is stored with spare parts. Mechanics check the oil levels
weekly.
The raw water strainer is under the floorboard in front of the engine where all
through hulls are. No need to open or clean unless the engine overheats. Turn off
the raw water intake seacock before unscrewing the strainer. Be careful not to lose
the o-ring. When screwing the strainer back on, please avoid over-tightening. Be
sure to open the seacock for the through hull and look for leaks. Some maintenance
people put the boat keys over the seacock handle to remind themselves!
Last revised: April 2019
Highlights
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