Operator`s manual
General
JS TRANSMISSION
(Standard)
The transmission's gear ratio
is
2.47
to
1.
The JS transmission
is
made
of
a lightweight, high-strength, cor-
rosion-resistant aluminum alloy suitable for the marine environment. This manual transmission rotates op-
posite
to
the engine when
in
forward gear. The JS transmits its power with case-hardened helical gears and,
in reverse, an intermediate gear. The reversing process is carried out by a servo double disc system. For
safety reasons, the transmission
is
NOT filled with lubricating oil
lor
shipment. Before leaving the factory,
however, each transmission
is
thoroughly tested with oil in the transmission. This testing, among other things,
provides all internal parts with a coating
01
oil. This oil acts as a preservative, providing reliable protection
against corrosion for at
least one year
if
the transmission
is
property stored.
Lubrication
GEAR
BOX
tOH1ROl
LEVER
BEll
flOIlSlltG
OIL
IlRAIH
HOG
(Allen Wrench size
is
6mm)
The JS transmission
is
an immersion-lubricated type. Fill the transmission up to or near the
top
of the
machined notch cut on the dipstick with
SAE
20
W/20 or
SAE
30 weight engine oil exclusively. Multigrade
oils are not
to
be used in this transmission. DO NOT mix grades
of
oil! Lubricating oils may have an
API
specification
of
CC, CD,
SC,
SO,
or
SE.
The oil capacity for the JS transmission
is
approximately 1.0 quart (1.0 liter). Check the oil level daily after
the engine has been warmed and stopped. The
oil level
shOUld
be maintained at the
top
of
the machined
flat on the dipstick when the dipstick is
completely inserted into the transmission housing. Make sure the
two
O-ring gaskets on the dipstick are in good shape. These O-rings will help keep the dipstick in place.
Change the transmission oil after the lirst
30 hours
01
engine operation and thereafter every 250 hours (or
once per
year, minimum). The JS has a 6 mm Allen wrench drain plug for draining the old oil. To make sure
most
of
the old oil will drained from the transmission, run the engine in NEUTRAL for approximately
10
to
15
minutes so the oil may warm and flow better from the transmission. This oil may also be removed
by
insert-
ing a
small tube through the dipstick opening (where the oil
is
added) and attaching a pump onto the tube
so the oil may be sucked out. The operating
oil temperature must not exceed 250
0
F
(120
0
C).
63
Wasterbeke Diesel
Engines