Operation
5
ENGINE BREAK-IN
Engine break-in during the first hours of
operation results in the ideal fitting of all
internal moving metal parts, which is
essential .top engine performance. For
controlled engine break-in:
1. Operate the equipment as it is intended
to be operated. However, for the first 1-
1/2 hours, if possible, operate the
engine at about half the available engine
power, occasionally operating at full
engine power for brief periods. Avoid
prolonged low- speed, low-power
operation during the engine break-in.
2. Proper engine oil is especially critical
during break-in because of the higher
engine temperatures that can be
expected. See RECOMMENDED
ENGINE OIL in Introduction. Change
the oil if it is not appropriate for the
ambient temperatures during the break-
in period. See Table 1.
3. Check the oil level twice a day or after
every 4 hours of operation during the
first 24 hours of operation.
4. Change the oil after the first 24 hours of
operation and have the valves
readjusted by a qualified mechanic.
OPERATION IN DUSTY CONDITIONS
1. Keep the engine cooling fins and
flywheel air inlet screen clean.
2. Perform air cleaner maintenance more
often than normal-as required. See table
2.
3. Change the oil more often than normal.
See table 2.
OPERATION IN HOT WEATHER
Pay particular attention to the following
items when operating the engine in
temperatures above 100° F (38°C):
1. Keep the flywheel air inlet screen and
cylinder cooling fins clean. See to it that
nothing obstructs the air flow to and
from the engine.
2. Check the oil level more frequently.
3. Change the oil more often than normal.
See Table 2.
4. Make sure the engine oil viscosity is
appropriate for the ambient
temperatures and change the oil if
necessary. See Table 1.
OPERATION IN COLD WEATHER
Pay particular attention to the following
items when operating the engine in
temperatures below freezing.
1. Make sure the engine oil viscosity is
appropriate for the ambient
temperatures and change the oil if
necessary. See Table1.lf the
temperature drops before you have the
chance to change the oil, warm up the
engine by moving the equipment into a
heated space before attempting to start
the engine or change oil.
WARNING EXHAUST GAS IS DEADLY!
Never operate mobile engine-powered
equipment indoors without ample fresh
air ventilation.
2. Use fresh fuel and fill the fuel tank after
each day's use to reduce problems with
condensation.
3. Keep the battery in a well-charged
condition.
4. After each use push the equipment
throttle knob or lever to the middle of its
speed range so that if ice forms on the
linkage during storage it will be easier to
start the engine.
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