MTD 179cc User Manual

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Operating 
the 
Engine
IMPORTANT: This engine 
is shipped without gaso-
line or oil in the engine. 
Running the engine with 
insufficient oil can cause 
serious engine damage and 
void the engine warranty.
WARNING: The optional 
electric starter is equipped 
with a grounded three-wire 
power cord and plug, and is 
designed to operate on 120 
volt AC household current. 
It must be used with a prop-
erly grounded three-prong 
receptacle at all times to 
avoid the possibility of 
electric shock. 
WARNING
Starting the Engine
WARNING: Always keep hands and 
feet clear of moving parts. Do not use 
a pressurized starting fluid. Vapors are 
flammable.
NOTE: Allow the engine to warm up for a few min-
utes after starting. The engine will not develop full 
power until it reaches operating temperatures.
Engines with Electric Starters
WARNING: The electric starter is 
equipped with a grounded three-wire 
power cord and plug, and is designed 
to operate on 120 volt AC household 
current. It must be used with a properly grounded 
three-prong receptacle at all times to avoid the 
possibility of electric shock. Follow all instructions 
carefully prior to operating the electric starter. 
WARNING: DO NOT use electric starter 
in rain.
Determine that your home’s wiring is a three-wire 
grounded system. Ask a licensed electrician if you 
are unsure. If you have a grounded three-prong 
receptacle, proceed as follows. If you do not have 
the proper house wiring, DO NOT use the electric 
starter under any conditions.
Insert ignition key fully into slot, Figure 2-5. Make 
sure it snaps into place. DO NOT turn ignition 
key. 
The engine cannot start unless the key is 
inserted into ignition switch. 
 Plug the extension cord into the electric switch box 
located on the engine, Figure 2-6. Plug the other 
end of extension cord into a three-prong 120-volt, 
grounded, AC outlet in a well-ventilated area. 
Move throttle control, Figure 2-1, to FAST (rabbit) 
position.
Move choke to the ON position (cold engine start). 
If engine is warm, place choke in OFF position, 
Figure 2-1.
Push primer three to five (3-5) times, making sure 
to cover vent hole when pushing, Figure 2-1. If 
engine is warm, push primer only once. Always 
cover vent hole when pushing. Cool weather may 
require priming to be repeated. 
Push starter button to start engine, Figure 2-1. 
Once the engine starts, immediately release 
starter button. Electric starter is equipped with 
thermal overload protection; system will temporarily 
shut-down to allow starter to cool if electric starter 
becomes overloaded.
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Figure 2-5: The ignition key is a safety device.
Figure 2-6: Plug cord into electric switch box on engine.
As the engine warms, slowly rotate the choke control 
to OFF position. If the engine falters, restart engine 
and run with choke at half-choke position for a short 
period of time, and then slowly rotate the choke into 
OFF position.
After engine is running, disconnect power cord from 
electric starter. When disconnecting, always unplug 
the end at the wall outlet before unplugging the 
opposite end from the engine.
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