Kohler MAGNUM 18vhp Owner's Manual - Page 5
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Straight 30-weight (Kohler "Magnum") oil is
preferred. SAE 10W-30 oil is not recommended above
32°F. Using this oil substantially increases oil
consumption and combustion chamber deposits.
NOTE: Using other than service class SG, SH, SJ or
higher oil or extending oil change intervals
longer than recommended could cause engine
damage which is not covered by the engine
warranty.
A logo or symbol on oil containers identifies the API
service class and SAE viscosity grade.
Figure 4. Oil Container Logo.
Refer to "Maintenance Instructions" beginning on
page 8 for detailed oil check, oil change, and oil
filter change procedures.
Fuel Recommendations
WARNING: Explosive Fuel!
Gasoline is extremely flammable, and its vapors can
explode if ignited. Store gasoline only in approved
containers, in unoccupied buildings, away from sparks
or flames. Do not fill the fuel tank while the engine is hot
or running, since spilled fuel could ignite if it comes in
contact with hot parts or sparks from ignition. Do not
start the engine near spilled fuel; wipe up spills
immediately. Never use gasoline as a cleaning agent.
General Recommendations
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.
Fuel Type
For best results, use only clean, fresh, unleaded
gasoline with a pump sticker octane rating of 87 or
higher. In countries using the Research method, it
should be 90 octane minimum.
Unleaded gasoline is recommended, as it leaves less
combustion chamber deposits. Leaded gasoline may be
used in areas where unleaded is not available and
exhaust emissions are not regulated. Be aware
however, that the cylinder head will require more
frequent service.
Gasoline/Alcohol blends
Gasohol (up to 10% ethyl alcohol, 90% unleaded
gasoline by volume) is approved as a fuel for Kohler
engines. Other gasoline/alcohol blends are not
approved.
Gasoline/Ether blends
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.
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