2005 Yamaha Outboard 40D 50D Boat Motor Owners Manual

Maintenance
Yamaha dealer. You  should periodically re-
NOTE:
move  and inspect  the spark  plug  because    If a torque-wrench is not available when you
heat and deposits  will cause the spark  plug    are  fitting a spark  plug, a  good estimate of
to slowly break down and erode. If electrode    the correct torque is 1/4 to 1/2 a turn past fin-
erosion becomes excessive, or if carbon and    ger-tight. Have the spark plug adjusted to the
other deposits are excessive, you should re-    correct  torque  as soon  as  possible  with a
place the spark plug with another of the cor-
torque-wrench.
rect type.
EMU28962
Checking fuel system
Standard spark plug:
EWM00060
WARNING
40TR
50TR
40TR
50TR
B7HS-10
B8HS-10
BR7HS-10
BR8HS-10
Gasoline and  its vapors are  highly flam-
mable  and  explosive.  Keep  away  from
sparks,
cigarettes,
flames,
or
other
sources of ignition.
Before  fitting the  spark  plug,  measure the
electrode gap  with a  wire thickness gauge;
adjust the gap to specification if necessary.
EWM00910
WARNING
Leaking  fuel can  result in  fire  or explo-
sion.
q
q
Check for fuel leakage regularly.
If  any  fuel  leakage is  found,  the  fuel
system must be repaired by a qualified
mechanic. Improper  repairs  can make
the outboard unsafe to operate.
Check the fuel lines for leaks, crack, or mal-
function. If a problem is found, your Yamaha
dealer or other qualified mechanic should re-
pair it immediately.
1.
2.
Spark plug gap
Spark plug I.D. mark (NGK)
Spark plug gap:
0.9
1.0 mm (0.0350.039 in)
When fitting the plug, always  clean the gas-
ket surface and use  a new gasket. Wipe off
any dirt  from the  threads and  screw in  the
spark plug to the correct torque.
Spark plug torque:
25.0
Nm (18.4 ft-lb) (2.55 kgf-m)
45
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.
- 77 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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