Specifications

J/46 OWNER GUIDE 29
Engine System
The engine and fuel system is engineered to be conveniently accessible for repairs and general
maintenance. Located aft of the companionway ladder. There is access to the front, sides and back of
the engine from which all important functions can be reached; including water strainer, fuel injectors, fuel
filter, fuel primer, expansion chamber, and alternator.
Before starting the engine read the engine manufacturer’s owner’s manual for proper break-in and
operating procedures. Once the engine is running, inspect it for any discrepancies, like oil leaking,
excessive water leaks, or anything out of the ordinary.
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Engine Control Panel:
is mounted aft of the port side of the helmsman’s cockpit. It contains the
starter, kill switch, warning lights, and gauges. The combination throttle/gearshift are mounted on the
steering pedestal. Double-check all mechanical connections between engine and on-deck equipment.
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Engine Bed:
is constructed of heavily reinforced fiberglass. This provides a superior mount over
wood and is also rot-proof. The engine sits on Yanmar “soft” rubber shock mounts to help isolate the
engine vibration from the boat. Check to see that the engine is sitting correctly on them and the bolts
tightly secured.
Drive Train
This is the complete system which propels your boat. It includes the following components; coupling, self-
aligning thrust bearing, shaft seal, shaft log, shaft, strut, and the propeller.
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Transmission:
is attached to the aft end of the engine and houses the reduction and reverse gears.
These gears generally need little maintenance, but the oil level should be checked periodically.
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Shaft Seal:
is aft of the engine where the propeller shaft passes through the hull. It is a waterproof no-
drip Volvo shaft seal. Please refer directly to the owner manual for this component for more
information.
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Max Prop Feathering Propeller:
is a geared feathering propeller built of high quality bronze alloy.
Check to see that the blades on the prop open almost perpendicular to the shaft. There are a few
easy precautions which can prolong its life:
1) Coat it with a silicone grease film.
2) Check to see that the joints in the folding prop have a good coating of waterproof grease.
3) Check that the blades are smooth.
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Propeller Shaft:
is stainless and supported at the inboard end by the shaft coupling and at the
outboard end by the bronze cast strut containing a “cutlass bearing.” Before launching attach a “shaft
zinc” to minimize corrosion. The zinc should be replaced each time the boat is hauled and perhaps
more often depending on the amount of active current in your home port.
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Engine/SHAFT Alignment:
is set by TPI to ensure that the engine, shaft, stuffing box, and prop are
properly adjusted to minimize engine vibration. During commissioning, the alignment should be re-
aligned, as it is difficult to duplicate actual conditions (in the water with rig tuned) in the factory. If there
seems to be excessive vibration, notify your dealer and have them investigate.