Section 6. Lubrication System - Kohler Courage SV710-740 Service Manual

This engine uses a combination pressure/splash
lubrication system, delivering oil under pressure
to the crankshaft, connecting rod and main bearing
surfaces. Other component areas are splash lubricated.
A high-efficiency gerotor pump is located in the oil
pan. The oil pump maintains oil flow and oil pressure,
even at low speeds and high operating temperatures.
A pressure relief valve in the oil pump limits the
maximum pressure of the system.
The oil pan must be removed to service the oil pump
or oil pickup. Refer to the appropriate procedures in
Section 9, Inspection and Reconditioning.
Using the proper type and weight of oil in the
crankcase is extremely important; so is checking oil
daily and changing the oil and filter regularly.
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.
R EC OMME ND ED SA E V ISC OS IT Y G R A D ES
**
*
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)
10W-30
Kohler 10W-30
40 60 80 100
10 20 30 40
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 6-1.
SAE
10W-30
The top position of the symbol shows service class
such as API SERVICE CLASS SJ. The symbol may
show additional categories such as SH, SG/CC, or
CD. The center portion shows the viscosity grade such
as SAE 10W-30. If the bottom portion shows "Energy
Conserving," it means that oil is intended to improve
fuel economy in passenger car engines.