Installation manual

LUBRICATION SYSTEM
CHANGING THE OIL
Change the oil after an initial 50 hours of break-in operation and
every 100 hours of operation thereafter. Change the oil only when ~,l«<ll--\lrll
the engine is warm.
Always observe the used 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 prevent seri-
ous damage. Call a qualified mechanic should water be 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 cooling circuit into the exhaust,
filling the engine. This problem is often caused by the absence of
an anti-siphon valve, its poor location or lack of maintenance.
A CAUTION: Used engine oil contains harmful
contaminants. Avoid prolonged skin contact. Clean skin
and nails thoroughly using soap and water. Launder Dr
discard clothing Dr rags containing used oil. Discard
used oil properly.
Removing the Old Oil
1. Remove the oil filler cap (see illustration) using a 13 mm
open end spanner.
OIL
FILLER
CAP
2. Model7A-I: Place a suitable container below the oil drain
plug (see illustration), then remove the oil drain plug and com-
pletely drain the used oil into the container. Then remove and
clean the lube oil strainer. Always clean this strainer at every
oil change. After cleaning, replace the strainer and the oil
drain plug.
ModelIM-I: Place a suitable container below the oil drain
cover plate (see illustration), then remove the cover plate and
completely drain the used oil into the container. Then replace
the cover plate. NOTE: Be sure to change the spin-on oil filter
at every oil change (see Changing the Spin-On Oil Filter,
below).
NOTE: With an inclined engine installation, the lube oil must
be pumped out, otherwise too much oil would remain in the
crankcase.
Modal7A-1 Model 11A·1
REMOVING THE OLD OIL
Changing the Oil Filter (Model 11A-1 only)
When removing the used oil filter, you may fmd 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. A small automotive filter wrench
should be helpful in removing the old oil filter.
NOTE: Do not punch this hole without first loosening the filter to
make certain it can be removed.
Place some paper towels and a plastic bag around the filter when
unscrewing it to catch any oil left in the filter. (Oil or any other
fluid on the engine reduces the engine's cooling ability. Keep
your engine clean.) 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 filter
bracket, gently rem~ve it --==-
_ ~l"~
JW 0
SPIN-ON OIL FILTER
Model 11A·1 only
When installing the new oil filter element, wipe the filter gasket's
sealing surface on the bracket 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 nipple and then tighten the
filter fmnly by hand.
NOTE: Generic filters are not recommended, as the material
standards or diameters of important items on generic parts might
be entirely different from genuine parts. Immediately after an oil
filter change and oil fill, run the engine to make sure the oil pres-
sure is normal and that there are no oil leaks around the new oil
filter.
Engines & Generators
19