Maintenance - MTD 179cc Operator's Manual

Maintenance
Maintenance Schedule
Check Engine Oil Level
Change Engine Oil
Check Air Cleaner (If so equipped)
Service Air Cleaner (If so equipped)
Check Spark Plug
Replace
~park
Plug
Clean Engine Shroud
(If
so equipped)
Clean
arou~d
muffler
Replace Fuel Filter (If equipped)
Periodic inspection and adjustment ofthe
engine is essential if high level performance
Is to be maintained. Regular maintenance will
also ensure a long service life. The required
service intervals and the kind of maintenance
to be performed are described in the table
above. Follow the hourly or calendar intervals,
whichever occur first. More frequent service is
required when operating in adverse ·conditlons.
AWARNINGI
Shut off the engine before performing any
maintenance. To prevent accidental start-up,
disconnect the spark plug boot.
NOTE:
Ifengine must
be
tipped to transport
equipment or to inspect or remove grass, keep
spark plug side of eng in!! up. Transporting or
tipping engine spark plug down may cause
smokihg, hard starting, spark plug fouling, or oil
saturation of air cleaner.
AWARNINGI
If
the engine has been running, the muffler will
be
very hot Be careful not to touch the muffler.
Oil Recommendations
Refer to the viscosity chart ("Figure
6-1")
for
oil recommendations. Do not over-fill. Use
a 4'stroke, or an equivalent high detergent,
premium quality engine oil certified to meet
or exceed U.s. automobile manufacturer's
requirements for service c1assification·of a
minimum level SF or SG (higher letter ratings
are acceptable such as 5J, 5L and 5M grades).
Engine oil will display this designation on the
container.
After First
Each use '
Every
or Every Season or
5
Hours
5
Hrs.
25
Hours
./
./
./
./
./
./
NOTE: Do not use non-detergent oil or
2-stroke engine oil. It could shorten the
engine's service life.
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Vl
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~8.
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~.!l-
:s,o
Vloll
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8'.!i
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('Q -30' -20' -10' O' 10' 20' 30' 40'
('F) .
-20' 0'
15'
30' 50' 70' 85' 105'
Figure 6-1
Chec~ng and Changing the Oil
To avoid engine damage, it is important to:
'Check oil level before each use and every
. 5 operating hours when the engine is
warm.
Change the oil after the first 5 operating
hours and every 50 operating hours
thereafter. Engine should still be warm
but NOT hot from recent use.
Oil Fill Cap and Dipstick
AWARNINGI
Before tipping engine or equipment to drain oil,
drain fuel from tank by running engine until fuel
tank is empty:
6
Every Every
Service
season or season or
Dates
SO
Hours 100 Hours
./
1.
./
./
./
carefully disconnect the spark plug
wire and keep it away from the spark
plug. Refer to "Figure 6_2" for spark plug
location.
Keep the disconnected spark plug
wire securely away from the metal :
parts where arcing could occur •
carefully attach the spark
plug~
wire to the grounding post, if
provided. ' .
Figure
6-2
Spark
Plug
Spark
Plug
Boot