2004 Yamaha Outboard F2.5C Boat Motor Owners Manual

E
EMU01202
CLEANING AND ADJUSTING SPARK
PLUG
WARNING
@
When   removing  or   installing   a  spark
plug, be  careful not to damage  the insu-
lator.  A  damaged  insulator  could  allow
external   sparks,  which   could   lead   to
explosion or fire.
@
The spark plug is an  important engine com-
ponent and is easy to inspect. The condition
of  the  spark  plug  can  indicate  something
about the condition of the engine. For exam-
ple, if the  center electrode porcelain  is very
white, this  could indicate  an intake  air leak
or  carburetion problem  in that  cylinder.  Do
not attempt to diagnose  any problems your-
self. Instead,  take  the outboard  motor to  a
Yamaha   dealer.   You   should   periodically
remove and inspect the spark  plug because
heat and deposits  will cause the spark  plug
to slowly break down and erode. If electrode
erosion becomes excessive, or if carbon and
other  deposits  are  excessive,  you   should
replace  the spark  plug with  another  of the
correct type.
Standard spark plug:
Refer to SPECIFICATIONS, page 4-1.
Before  fitting the  spark  plug,  measure  the
electrode gap  with a  wire thickness  gauge;
adjust the gap to specification if necessary.
Spark plug gap:
Refer to SPECIFICATIONS, page 4-1.
4-10
Product Specification
CategoriesYamaha Outboard Manuals
Document TypeBoat Motor Manual Free Download. Marine Operator's Boating Guide.
Tags
Model Year2004
Download File
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- 95 pages
LanguageEnglish
Product BrandYamaha Motor. Yamaha Motor Corporation, USA - Support Customer Relations for US: 1-800-962-7926
Yamaha Boats: 1-800-962-7926
Yamaha Outboard Customer Relations: 1-866-894-1626 , Yamaha Outboard
Document File TypePDF
Publisheryamaha-motor.com
Wikipedia's PageYamaha Motor Company
CopyrightAttribution Non-commercial
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