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Chapter 8
STERN DRIVE MAINTENANCE
ENGINE
Each engine package is unique and quite complex. A select
portion of the maintenance items are covered in this
chapter. Many times because of the advanced ignition and
fuel injection systems used on marine engines it is best to
use trained marine professionals. For more detailed
information, refer to the manufacturer’s engine owner’s
manual or call your closest Regal dealer.
STERN DRIVE
The stern drive unit should be checked before each outing.
Tilt the drive unit up and check for any debris around the
intake and fish line tangled in the propeller. Check your
engine manual for stern drive maintenance schedules.
PROPELLERS
Out-of-balance or nicked props will effect performance
or cause vibration. Damaged props should be replaced,
but those that are chipped or bent can usually be
reconditioned by a marine dealer or a propeller repair
facility. When cruising, Regal recommends you carry a
spare set of props on board because many marinas do not
carry a full inventory of replacement propellers. Refer to
the manufacturer’s engine manual for appropriate stern
drive and inboard propeller replacement procedures.
Be sure to make a note of the propeller diameter and pitch
while the vessel is in dry dock. They are pressed into the
prop for easy reading.
In an emergency an aluminum propeller blade can be
straightened by laying the propeller blade on a 2 x 4 and
hammering the bent portion of the blade until straight.
This procedure will assist the operator in reaching port so
he can have the propeller repitched.
OVERBOARD DISCHARGE PUMP
If your boat is equipped with an overboard discharge pump
pay close attention to what materials are flushed through
the waste system as it could become clogged. Do not pump
garbage, rags, or sanitary napkins through the overboard
discharge pump (macerator). Flush the waste tank and
pump with fresh water with each pump out. Do not run
the pump dry or for extended periods of time since the
impeller can be damaged. Pump the waste system out at
decommissioning time and rinse fresh water through the
entire system before decommissioning.
HOT WATER HEATER
The hot water heater is located in the bilge. The system
uses a heat exchanger to retain hot water in the water heater
when at sea. All hoses should be checked periodically for
leaks and chafing since any hose leaks can effect the engine
cooling process.
Several of the connections are of the threaded type. You
can check these with your hand for tightness.
Periodically operate the pressure relief valve located at
the back of the water heater. Make sure the water heater is
cool before performing the above procedure. Flush out
the water heater at least annually. There is a plug located
on the back of the unit.
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