Kohler Courage SV710-740 Service Manual page 8

Using the proper type and weight of oil in the
crankcase is extremely important. So is checking oil
daily and changing oil regularly. Failure to use the
correct oil, or using dirty oil, causes premature engine
wear and failure.
Use high-quality detergent oil of API (American
Petroleum Institute) Service Class SJ or higher. Select
the viscosity based on the air temperature at the time
of operation as shown in the following table.
RECOMMENDED SAE VISCOSITY GRADES
**
*
5W-20, 5W-30
°F -20 0 20 32
°C -30 -20 -10 0
TEMPERATURE RANGE EXPECTED BEFORE NEXT OIL CHANGE
* Use of synthetic oil having 5W - 20 or 5W - 30 rating is acceptable,
up to 4°C (40°F)
** Synthetic oils will provide better starting in extreme cold below
23°C ( - 10°F)
NOTE: Using other than service class SJ or higher oil
or extending oil change intervals longer than
recommended can cause engine damage.
NOTE: Synthetic oils meeting the listed classifications
may be used with oil changes performed
at the recommended intervals. However, to
allow piston rings to properly seat, a new or
rebuilt engine should be operated for at least
50 hours using standard petroleum based oil
before switching to synthetic oil.
A logo or symbol on oil containers identifies the API
service class and SAE viscosity grade. See Figure 1-3.
SAE
10W-30
10W-30
Kohler 10W-30
40 60 80 100
10 20 30 40
Refer to Section 6, Lubrication System for detailed
procedures on checking the oil, changing the oil and
changing the oil filter.
Purchase gasoline in small quantities and store
in clean, approved containers. A container with a
capacity of 2 gallons or less with a pouring spout is
recommended. Such a container is easier to handle
and helps eliminate spillage during refueling.
Do not use gasoline left over from the previous season,
to minimize gum deposits in your fuel system and to
ensure easy starting.
Do not add oil to the gasoline.
Do not overfill the fuel tank. Leave room for the fuel to
expand.
For best results use only clean, fresh, unleaded
gasoline with a pump sticker octane rating of 87
(R+M)/2 or higher. In countries using the Research
Octane Number (RON), it should be 90 octane
minimum. Leaded gasoline is not recommended and
must not be used on EFI engines or on other models
where exhaust emissions are regulated.
Gasohol (up to 10% ethyl alcohol, 90% unleaded
gasoline by volume) is approved as a fuel for Kohler
engines. Other gasoline/alcohol blends including E20
and E85 are not to be used and not approved. Any
failures resulting from use of these fuels will not be
warranted.
Methyl Tertiary Butyl Ether (MTBE) and unleaded
gasoline blends (up to a maximum of 15% MTBE by
volume) are approved as a fuel for Kohler engines.
Other gasoline/ether blends are not approved.