J 133 Owner's Manual - Electrical System
J/133 OWNER GUIDE
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• Bilge Pumps There is one electrical and one manual bilge pump installed on the J/133. Two
pump intakes are located in the bilge within the keel sump under the main cabin centerline
floorboard.
• The Manual pump is operated from the cockpit with a removable handle.
•
Electrical Bilge Pump is wired to an independent switch on it’s own panel adjacent to the nav station.
Head System
The standard J/133 is equipped with one certified marine head and an optional aft head which are capable
of discharging effluents into a holding tank or overboard. Both systems are easy to operate and with correct
usage and proper maintenance, will provide many years of use.
Before operating the HEAD, ensure you have read its manual thoroughly and understand the proper
procedures. Silly mistakes can cause severe “head” aches at the worst possible time!. And a word to the
wise
PLEASE TRAIN YOUR GUESTS ON HEAD OPERATION. NEVER, NEVER ASSUME THEY KNOW
HOW TO USE IT.
The head is a large pump which takes in seawater and flushes waste into the holding tank or overboard.
The salt-water intake thru-hull is underneath the head sink and the discharge is in the starboard aft locker.
Remember open/closed positions on these thru-hulls. It is good seamanship to close the intake and
discharge seacock for the head when not in use.
When seawater and effluent are pumped through the head, they’re pumped into the holding tank by the
action of pumping the toilet handle. The waste discharge fitting on deck is provided so a shoreside pump-
out station can empty the tank. Care should be taken not to overfill the holding tank as effluent can block the
vent hose and may damage the tank... or worse, burst the hose. If the toilet is difficult to pump, check to
see if the holding tank is overfilled. “When in doubt, pump it out!” We have found a great resource for
understanding and maintaining your head system is a book called “Get Rid of Boat Odors” by Peggie Hall
by Seaworthy Publications.
The holding tank must be pumped out before winter storage. Dumping a quart of anti-freeze through the
heads will prevent the seals and equipment from cracking. The following hoses are connected to the tank.
•
Waste Discharge Hose from the head
•
Pump-out Hose leading to the deck fitting
•
Vent Hose to vent the tank overboard.
Electrical System
The following section describes the electrical systems aboard the boat, how they operate, where they lead,
and how to avoid trouble. Please read this section over more than once. For wiring code information
please refer to the color code diagram.
DC Electrical System
A 12 Volt DC electrical system is used throughout the J/133 for lighting and operation of pumps and various
accessories. The J/133 is standard with two 105 Amp Glass Mat batteries located under the nav station
seat and one engine start battery located aft of the engine. An optional 105 amp AGM is available and
located outboard of the port settee backrest aft.
• Electrical Panel: controls electric distribution with circuit breakers and switches. The main wiring
harness runs from the back of this panel.