MTD 44M 46M Series 21 Inch Self Propelled Rotary Lawn Mower Owners Manual

10
IMPORTANT: Used motor oil may cause skin cancer
if repeatedly left in contact with the skin  for prolonged
periods. Although this is unlikely unless you handle  used
oil on a daily basis, it is still advisable to thoroughly  wash
your hands with soap and water as soon as possible
after handling used oil.
0APER�%LEMENT
NOTE: Please dispose of used motor oil in a manner that
is compatible with the environment. We suggest  you take
it in a sealed container to your local service  station for
reclamation. Do not throw it in the trash or pour it on the
ground.
Maintaining
Your
Engine
Air Cleaner Service
A dirty air cleaner will restrict air flow to the  carburetor.
To prevent carburetor malfunction, service the  air cleaner
regularly. Service more frequently when operating  the
engine in extremely dusty areas.
&OAM�%LEMENT
Figure 10-
WARNING: Never use gasoline  or low
flash point solvents for cleaning the
air cleaner element. A fire  or explosion
could result.
IMPORTANTcleaner. Rapid: Neverenginerunwearthewillengineresult.without the air
3PARK�0LUG
WARNING
Never use gasoline
or low flash point sol-
vents for cleaning the
air cleaner element.
A fire or explosion
could result.
1.
Remove the wing bolt and the air cleaner cover.
Remove the elements and separate them. See Figure
10-2.
Carefully check both elements for holes or tears
and replace if damaged.
2.
Foam element: Wash the element in a solution  of
household detergent and warm water, then rinse
thoroughly, or wash in nonflammable or high flash
point solvent. Allow the element to dry thoroughly.
Soak the element in clean engine oil and squeeze out
the excess oil. The engine will smoke during initial
start-up if too much oil is left in the  foam.
Paper element: Tap the element  lightly several times
on a hard surface to remove excess dirt, or blow
compressed air through the filter from the inside  out.
Never try to brush the dirt off;  brushing will force
dirt into the fibers. Replace the paper element  if it is
excessively dirty.
3PARK�0LUG�"OOT
DO NOT check for
spark with spark plug
removed. DO NOT
crank engine with
spark plug removed.
Figure 10-3
WARNING: If the  engine has been
running, the muffler will be very  hot. Be
careful not to touch the muffler.
Visually inspect the spark plug. Discard  the spark plug
if there is apparent wear, or if the insulator is cracked
or chipped. Clean the spark plug with a wire brush if  it
is to be reused.
3.
2.
If the engine has
been running, the
muffler will be very
hot. Be careful not to
touch the muffler.
Foam Element Part Number:  751-10239
Paper Element Part Number:  751-10240
Spark Plug Service
3.
4.
5.
Measure the plug gap with a feeler gauge. Correct
as necessary by bending side electrode.  See Figure
1
0-4. The gap should be: 0.70-0.80  mm
Check that the spark plug washer is in good condition
and thread the spark plug in by hand to prevent
cross-threading.
Afterplug wrenchthe sparkto compressplug is seated,the washer.tighten with a spark
NOTE: When installing a new spark plug, tighten  1/2 turn
after the spark plug seats to compress the washer. When
reinstalling a used spark plug, tighten 1/8-1/4  turn after
the spark plug seats to compress the washer.
WARNING: DO NOT check for spark
with spark plug removed. DO NOT
crank engine with spark plug removed.
Tobe ensureproperlypropergappedengineand freeoperation,of deposits.the spark plug must
1.
Removewrench totheremovesparktheplugplug.bootSeeandFigureuse a spark10-3.   plug
1
Product Specification
CategoriesLawn Mower Manual, MTD Lawn Mower Manuals
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- 52 pages
Document TypeOwner's Manual
LanguageEnglish
Product BrandMTD, Lawn Mower
Product TypeWalk Behind Mower
Document File TypePDF
Publishermtdproducts.com
Wikipedia's PageMTD Products
CopyrightAttribution Non-commercial
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