11.19
Section 11
Reassembly
11
Figure 11-64. Installing Lower Muffler Bracket and
Mounting Screws.
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, and Oil Sentry
™
pressure switch, and a new oil filter are installed.
Figure 11-63. Installing Upper Muffler Bracket and
Mounting Screws.
3. Fill the crankcase with the correct amount,
weight, and type of oil. Refer to oil
recommendations and procedures in the Safety
and General Information and Lubrication
System sections.
4. Adjust the carburetor, idle fuel needle, or idle
speed adjusting screw as necessary. Refer to the
Fuel System and Governor section.
5. Before starting the engine, turn the engine over
slowly by hand. If it can be turned over
completely and compression is noted, the lifters
have bled down sufficiently and the engine can
be test run. If, however, it can not be turned over
completely (locks up at some point), return the
piston to TDC between the intake and exhaust
strokes and wait ten minutes to allow the lifters
time to bleed down then check for compression
again. If started with extended lifters, bent push
rods or other engine damage could occur.
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 in the location normally used for
Oil Sentry
™
. Refer to Lubrication System section.
Start the engine and check to be certain that oil
pressure (40 psi or more) is present. Run the
engine for 5-10 minutes below 1500 RPM. Adjust
the carburetor mixture settings as necessary.
2. Make sure the maximum engine speed does not
exceed 3750 RPM. Adjust the throttle and choke
controls and the high speed stop as necessary.
Refer to Section 5.
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