ENGINE
OIL
CHANGE
DRAIN
THE
SUMP
The engine oil should be warm. Remove the oil drain hose
from its attachment bracket and lower it into a container and
allow the oil to drain,
or
attach a pump to the end
of
the drain
hose and pump out the old oil. Make sure the oil drain hose
is
capped and properly secured in its holder after all the old
oil has been drained.
NOTE:
Thread size
for
the lube oil drain hose capped end is
114NPT.
Always observe the old oil as it is removed. A yellow/gray
emulsion indicates the presence
of
water in the oil. Although
this condition is rare, it does require prompt attention to pre-
vent serious damage. Call a competent mechanic
if
water is
present in the oil. Raw water present in the oil can
be
the
result
of
a fault in the exhaust system attached to the engine
and/or a siphoning
of
raw water through the raw water cool-
ing circuit into the exhaust, filling the engine. This problem
is often caused
by
the poor location
or
the lack
of
an
anti~
siphon valve. See UNIVERSAL'S Installation Manual.
AWARNING:
Used
engine
oil
contains
hannful
conta·
mlnants.
Avoid
prolonged
skin
contact.
Clean
skin
and
nalls
thoroughly
using
soap
and
water.
Launder
or
dis-
card
clothing
or
rags
containing
used
o/1.
Discard
used
oil
properly.
NOTE:
Not illustrated. The block drain hex plug
for
the model M50B is located
just
to the right
of
the top
of
the engines lube oil dipstick.
17
Replacing
the
Oil
Filter
When removing the used oil filter, you may find it helpful
and cleaner to punch a hole in the upper and lower portion
of
the old filter to drain the oil from it into a container before
removing it. This helps to lessen spillage.
NOTE:
Do
not
punch
this
hole
without first loosening the filter
to
make
certain
it
will come off!
An automotive filter wrench should be helpful in removing
the old oil filter.
Place some paper towels and a plastic bag
around the filter when unscrewing it to catch any oil left in
the filter. Inspect the old oil filter as it is removed to make
sure that the rubber sealing gasket comes
off
with the old oil
filter.
If
this rubber sealing gasket remains sealed against the
engine block, gently remove it. When installing the new oil
filter element, wipe the filter gasket's sealing surface on the
engine block free
of
oil and apply a thin coat
of
clean engine
oil to the rubber gasket on the new oil filter.
SCrew the filter
onto the threaded oil filter stub, and tighten the filter firmly
by
hand.
NOtE:
Use genuine
UNNERSAL
oil
filters - generic filters
are
not
recommended.
REFILL
THE
OIL
SUMP
Add fresh oil through the filler cap. After refilling, run the
engine for a few moments while checking the engine's oil
pressure. Make sure there is no leakage around the new oil
filter
or
from the oil drain system, and then stop the
e~~
Then check the quantity
of
oil with the lube oil dipstick.
If
the engine requires additional oil, fill to, but not over, the
high mark on the dipstick.
TIGHTEN
BY
HAND
---
MOISTEN
THE
NEW
FILTER
GASKET
WITH
CLEAN
OIL
WHEN
INSTALLING
SPIN-ON
OIL
FILTER
M-25XPB
M-358
M-408
M3-20B
BLOCK
DRAIN
OIL
FILTER
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