10.28
Section 10
Reassembly
Connect Spark Plug Leads
1. Connect the leads to the spark plugs. See Figure
10-114.
Figure 10-114. Connect Spark Plug Leads.
Prepare the Engine for Operation
The engine is now completely reassembled. Before
starting or operating the engine, be sure to do the
following.
1. Make sure all hardware is tightened securely.
2. Make sure the oil drain plugs, Oil Sentry
™
pressure switch, and a new oil filter are installed.
3. Fill the crankcase with the correct amount,
weight, and type of oil. Refer to oil
recommendations and procedures in Section 1
Safety and General Information, and in Section 6
Lubrication System.
4. Adjust the carburetor, idle fuel needles, or idle
speed adjusting screw as necessary. Refer to
Section 5, Fuel System and Governor.
Testing the Engine
It is recommended that the engine be operated on a
test stand or bench prior to installation in the piece of
equipment.
1. Set the engine up 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 the engine at idle for 2-3 minutes,
then 5-6 minutes more between idle and
midrange. Adjust the carburetor mixture
settings as necessary (as available).
2. Adjust the governed idle and high speed (RPM)
to required settings. Make sure the maximum
engine speed does not exceed 3900 RPM (no load).