181-624-14
Two-Cycle Engine • Vertical Crankshaft • Air-Cooled
Page 11
C. Spark Plug
Check spark plug yearly or every 100 operating hours.
1.
Clean area around spark plug.
2.
Remove and inspect spark plug.
3.
Replace spark plug if porcelain is cracked or if
electrodes are:
• Pitted
• Burned
• Fouled with Deposits
4.
Check electrode gap with wire feeler gauge and set
gap to—.030 (0.76 mm) if necessary. See Figure 21.
5.
Install spark plug and tighten securely.
NOTE
A resistor spark plug must be used for replacement. Contact
your Authorized TecumsehPower Servicing Dealer for a
genuine replacement Resistor Spark Plug.
D. Carburetor
If you think your carburetor needs adjusting, see your
nearest Authorized TecumsehPower Servicing Dealer.
Engine performance should not be affected at altitudes up
to 7,000 feet (2,134 meters). For operation at higher
elevations, contact an Authorized TecumsehPower
Servicing Dealer.
E. Engine Speed
To avoid serious injury or death, DO
NOT modify engine in any way.
Tampering with the governor setting can lead to a runaway
engine and cause it to operate at unsafe speeds. NEVER
tamper with factory setting of engine governor.
Running the engine faster than the speed set at the factory
can be dangerous and will
VOID THE ENGINE WARRANTY.
F.
Muffler and Cylinder Exhaust Ports
The muffler and cylinder exhaust ports require cleaning
after every 75 to 100 hours of operation.
NOTE
For this maintenance procedure it is recommended that
the engine be taken to an Authorized TecumsehPower
Servicing Dealer.
VIII. Transporting Your Engine
NEVER transport this engine inside
another vehicle or in any enclosed
space if there is any gasoline in the tank. Fuel vapor or
spilled fuel may ignite leading to serious injury or death.
If there is fuel in the fuel tank, close the fuel shut-off valve,
if equipped, and transport the engine upright in an open
vehicle, such as an open trailer or open bed of a pickup
truck.
If you DO NOT have an open vehicle and have to transport
the engine upright in a closed vehicle, follow these steps
for emptying the fuel tank before transporting:
1.
Empty fuel tank by using a commercially available
suction device designed for use with gasoline.
To avoid serious injury or death, DO
NOT pour fuel from engine or siphon
fuel by mouth.
2.
Drain fuel into an approved red GASOLINE container,
being careful to avoid spilling.
3.
Run the engine until remaining fuel is consumed.
NEVER leave the engine unattended
when it is running and NEVER run
engine in enclosed areas to avoid death or serious injury.
WARNING
Figure 21. Resistor Spark Plug
1. .030 (0.76 mm) Gap
2. Electrodes
3. Porcelain
1
2
3
WARNING
WARNING
WARNING
Summary of Contents for AV520 -
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