)
)
JS
TRANSMISSION
General
The transmission's gear ratio is 2.47
to
1. The JS transmission is made of a lightweight. l:Iigh-strength, cor-
rosion-resistant aluminum alloy suitable for the marine environment. This manual transmission rotates op-
pos~e
to
the engine when in forward gear. The JS
transm~s
~
power
w~
case-hardened helical gears
and,
in reverse, an intermediate gear. The reversing process is carried out by a seNO double
disc
system. For
safety reasons,
the
transmission is
NOT
filled with lubricating
oR
for
shipment. Before leaving
the
factory.
however, each transmission is thoroughly tested
w~h
oil in
the
transmission. This testing. among other
things, provides all internal
partsw~h
a coating
of
oil. This
oR
acts as a preseNative, providing reliable protec-
tion against corrosion
for
at
least one year if the transmission is properly stored.
Lubrication
UAI
loa
tollTlIL
LE'U
ULL
IIDO$1I1G
OIl
,UIII
PUtO
(6
mm
Allen Head)
The
JS
transmission is an immersion-lubricated type.
Fmthe
transmission up to
or
near the top
of
th~
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 should
have an API specification
of
CF.
CG-4. SD, or SE.
The oil capacity
for
the JS transmission is approximately 1.0 quart
(1.0
I~er).
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 that
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 first 30 hours
of
engine operation and thereafter every 250 hours (or
once per year, minimum). The JS has a 6
mm
Allan Hex wrench drain plug
for
draining
the
old
oR.
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
inserting 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· F (120· C).
Engines & Generators
41
To Next Page
Loading...
Need help?
General
