4
Figure 1. Typical Command Horizontal Shaft LPG or LPG/NG Fueled Engine.
Electric Starter
Dipstick
Oil Filter
Air Cleaner
Vaporizer
LPG Regulator
Oil Recommendations
Using the proper type and weight of oil in the
crankcase is extremely important. So is checking oil
daily and changing oil regularly. Using oil that is
incorrect or dirty can cause premature engine wear and
failure. Synthetic oil is recommended for use in LPG/
NG fueled engines because there is less oxidation or
thickening, and deposit accumulation on intake valves
is substantially reduced. Conventional petroleum-
based oil may be used, but valve service will be
required every 500 hours to remove the accumulated
deposits.
Oil Type
Use high quality, oil of API (American Petroleum
Institute) service class SG, SH, SJ or higher. Select
the viscosity based on the air temperature at the time of
operation as shown in the following table.
5W-20, 5W-30
RECOMMENDED SAE VISCOSITY GRADES
°F
-20 0
20
32
40 60
50
80
100
°C
-30 -20
-10 0
10 20 30
40
TEMPERATURE RANGE EXPECTED BEFORE NEXT OIL CHANGE
10W-30
Kohler 10W-30
SAE 30
*
*Synthetic oils will provide be er starting in extreme
cold below -23°C (-10°F).
Figure 2. Viscosity Grades Table.
Oil Drain Plug
NOTE: Using other than service class SG, SH, SJ or
higher oil or extending oil change intervals
longer than recommended can cause engine
damage.
A logo or symbol on oil containers identifi es the API
service class and SAE viscosity grade. See Figure 3.
Figure 3. Oil Container Logo.
Refer to Maintenance Instructions beginning on
page 8 for detailed oil check, oil change, and oil fi lter
change procedures.
Fuel Recommendations
CH640 and CH740 engines are certifi ed to operate on
LPG or NG.
CH730 engines are certifi ed to operate on LPG.
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