MTD 54M Push Lawn Mower Owners Manual

Spark Plug Service
3.
Measure the plug gap with a feeler gauge.  Correct as
necessary by bending side  electrode. See Fig. 10-4. The
gap should be set to 0.030 in.
WARNING: DO NOT check for spark with spark
plug removed. DO NOT crank engine with spark
plug removed.
To ensure proper engine operation,  the spark plug must be
properly gapped and free  of deposits.
1
.
Remove the spark plug boot and use a spark  plug wrench
to remove the plug. See Fig. 10-3.
Electrode
Spark Plug
0.030
in.
Figure 10-4
4.
5.
Check that the spark plug washer is in good  condition
and thread the spark plug in by hand to prevent cross-
threading.
Spark Plug Boot
Figure 10-3
After the spark plug is seated, tighten  with a spark plug
wrench to compress the washer.
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: If the engine has been  running, the
muffler will be  very hot. Be careful not to touch the
muffler.
IMPORTANT: The spark plug must be securely tightened.
An improperly tightened spark plug  can become very hot
and may damage the engine.
2.
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.
sectiOn 10 — engine Maintenance
1
Product Specification
CategoriesLawn Mower Manual, MTD Lawn Mower Manuals
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- 56 pages
Document TypeOwner's Manual
LanguageEnglish
Product BrandMTD, Lawn Mower
Document File TypePDF
Publishermtdproducts.com
Wikipedia's PageMTD Products
CopyrightAttribution Non-commercial
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