2005 Yamaha Outboard 90D Boat Motor Owners Manual

Trouble Recovery
A. Have serviced by a Yamaha dealer.
Q. Are weeds or other foreign matter tangled
on gear housing?
Q. Is load on boat improperly distributed?
A. Distribute  load to place boat  on an even
plane.
A. Remove  foreign matter  and clean  lower
unit.
Q. Is fuel system obstructed?
Q. Is water pump or thermostat faulty?
A. Have serviced by a Yamaha dealer.
A. Check  for pinched  or kinked  fuel line  or
other obstructions in fuel system.
Q. Is there excess water in fuel filter cup?
A. Drain filter cup.
Q. Is fuel filter clogged?
A. Clean or replace filter.
Engine power loss.
Q. Is propeller damaged?
Q. Is fuel contaminated or stale?
A. Fill tank with clean, fresh fuel.
A. Have propeller repaired or replaced.
Q. Is spark plug gap incorrect?
Q. Is propeller pitch or diameter incorrect?
A.  Install  correct propeller  to  operate  out-
A. Inspect and adjust as specified.
board  at  its   recommended  speed  (r/min)     Q. Is ignition wiring damaged or poorly  con-
range.
nected?
A. Check  wires for wear  or breaks. Tighten
all loose connections.  Replace worn or bro-
Q. Is trim angle incorrect?
A. Adjust trim angle to achieve most efficient    ken wires.
operation.
Q. Have ignition parts failed?
Q. Is  motor mounted  at incorrect height  on    A. Have serviced by a Yamaha dealer.
transom?
A. Have  motor  adjusted to  proper transom     Q. Is specified engine oil not being used?
height.
A. Check and replace oil with specified type.
Q. Has warning system activated?
A. Find and correct cause of warning.
Q. Is thermostat faulty or clogged?
A. Have serviced by a Yamaha dealer.
Q. Is boat bottom fouled with marine growth?   Q. Is air vent screw closed?
A. Clean boat bottom.                                        A. Open the air vent screw.
Q.  Are spark  plug(s) fouled  or  of incorrect     Q. Is fuel pump damaged?
type?
A. Have serviced by a Yamaha dealer.
A.  Inspect spark  plug(s).  Clean or  replace
with recommended type.
Q. Is fuel joint connection incorrect?
A. Connect correctly.
57
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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