Kohler LH630-775 Service Manual page 176

Section 11
Reassembly
Testing the Engine
It is recommended that the engine be appropriately
secured and operated on a test stand or bench, prior
to installation in the application.
1. Make sure all hardware is tightened, and hose
clamps are properly secured.
2. Set up the engine on a test stand. Install an oil
pressure gauge. Start the engine and check to be
certain that oil pressure (20 psi or more) is
present. Run for 5-10 minutes between idle and
mid-range.
3. Check all cooling system components and joint
connections for leaks.
11.34
4. Make sure the maximum engine speed does not
exceed 3750 RPM (no load). Adjust the throttle,
choke controls and high speed stop as necessary.
Refer to the "Fuel System and Governor" section.
5. Place the throttle control into the "idle" or "slow"
position and check the low idle speed (RPM).
Refer to Section 5 if adjustment is required.
6. Stop the engine.
7. Recheck the oil and coolant levels. Oil level
should be at the "F" mark on the dipstick, and the
coolant level in the reservoir should be midway
between the "ADD" and "FULL" marks. Add
additional amounts as required.