Indmar 5.7L Vortec Operator's Manual page 65

A separate owner's manual cover-
ing basic maintenance is provided
with each transmission. The trans-
mission fluid must be changed and
the filter cleaned after the first 10-
20 hours of operation and once
each year thereafter. Refer to the
transmission owner's manual for
information.
The transmission is water cooled
by a heat exchanger connected to
the engine cooling system. The
transmission fluid level should be
checked each time the engine oil
is checked. Fluid level is to be
maintained at a level between the
"Full" and "Add" marks on the
transmission dipstick.
Overfilling the transmission with
fluid will cause the seals to leak,
and eventually lead to overheating,
while if there is too little fluid, overheating will result.
If the engine uses the Walters V-Drive, it is equipped with
a ZF Hurth in-line transmission for shifting. Be aware that
the Walters V-Drive uses motor oil for lubrication, while
the ZF Hurth transmission uses Automatic Transmission
Fluid. The Walters V-Drive also has a low oil pressure
Indmar Marine Engines
HIGH
LOW
INDM-A039
Figure 6.12 – Walters
V-Drive Dipstick
sensor and a dashboard mounted light. If low oil pres-
sure is sensed, this lamp will light indicating the problem.
Shut down the engine and check the transmission fluid
level. Refer to Chapter 6, Check Transmission Light for
more information.
If transmission service is required, note the Serial
Number of the transmission stamped onto the ID plate
on the top of the transmission housing. It is good prac-
tice to note the serial number noted and keep it with
other owner related information.
Checking/Adding Transmission Fluid
Check fluid only with engine OFF and boat floating level,
or level on trailer. The transmission dipstick is located on
the top of the transmission. Dipsticks may be marked
"ADD" and "FULL" or "H" and "L" (high and low); main-
tain fluid level between the two marks.
Check level immediately after turning engine
off. Transmission fluid may be hot. Be care-
ful not to burn yourself.
6-15