2005 Yamaha Outboard F6D F8D T8D Boat Motor Owners Manual

Maintenance
EMU28950
Cleaning and adjusting spark plug
EWM00560
WARNING
When removing or installing a spark plug,
be careful not  to damage the insulator. A
damaged  insulator  could  allow  external
sparks, which  could lead to  explosion or
fire.
The spark plug is an important engine compo-
nent and is easy to  inspect. The condition of
the spark plug can  indicate something about
the condition of the engine. For example, if the
center electrode  porcelain is very white,  this
could indicate an intake air leak or carburetion
1.
2.
Spark plug gap
Spark plug I.D. mark (NGK)
Spark plug gap:
0.91.0 mm (0.0350.039 in)
problem in that cylinder. Do not attempt to di-    When fitting the plug, always clean the gasket
agnose any problems yourself.  Instead, take    surface  and use a new gasket. Wipe  off any
the outboard motor to a Yamaha dealer. You     dirt from the threads  and screw in the  spark
should  periodically remove  and  inspect the     plug to the correct torque.
spark  plug because  heat  and  deposits  will
cause the  spark plug  to  slowly break  down
and erode. If electrode  erosion becomes ex-
cessive, or  if carbon and  other deposits  are
excessive, you should replace the spark plug
with another of the correct type.
Spark plug torque:
25.0
Nm (18.4 ft-lb) (2.55 kgf-m)
NOTE:
If a torque-wrench is  not available when you
are fitting a spark plug, a good estimate of the
correct torque is 1/4 to 1/2 a turn past finger-
tight. Have the spark plug adjusted to the cor-
rect torque as soon as possible with a torque-
wrench.
Standard spark plug:
BR6HS-10
Before  fitting  the  spark  plug,  measure the
electrode  gap with  a wire  thickness  gauge;
adjust the gap to specification if necessary.
EMU28961
Checking fuel system
EWM00900
WARNING
Gasoline and  its vapors  are highly  flam-
mable  and  explosive.   Keep  away  from
sparks, cigarettes, flames, or other sourc-
es of ignition.
EWM00910
WARNING
Leaking fuel can result in fire or explosion.
55
Product Specification
CategoriesYamaha Outboard Manuals
Document TypeBoat Motor Manual Free Download. Marine Operator's Boating Guide.
Tags, ,
Model Year2005
Download File
Please Enter the Security Characters Shown Below. Letters are Case Sensitive. Your download link will appear upon completing this step.
- 87 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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