2004 Yamaha Outboard F9.9C T9.9C Boat Motor Owners Manual

6G8-9-1M-5  4/4/03 11:46 AM Page 2
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EMU17520
TROUBLESHOOTING
A problem  in the  fuel, compression,  or ignition  systems can  cause poor  starting, loss  of
power, or  other problems. The troubleshooting  chart describes basic  checks and possible
remedies. (This chart covers  all Yamaha outboard motors. Therefore, some  items may not
apply to your model.)
If your outboard motor requires repair, bring it to a Yamaha dealer.
If the engine warning indicator is flashing, consult your Yamaha dealer.
Trouble
Possible Cause
Remedy
1.
2.
3.
Battery capacity weak or low.
1.  Check battery condition. Use battery
of recommended capacity.
Battery connections loose or corroded.
Fuse for electric start circuit blown.
2.  Tighten battery cables and clean
battery terminals.
A.  Starter will not
operate.
3.  Check for cause of electric overload
and repair. Replace fuse with one of
correct amperage.
4.
5.
Starter components faulty.
Shift lever in gear.
4.  Have serviced by a Yamaha dealer.
5.  Shift to neutral.
1.
2.
3.
4.
5.
6.
Fuel tank empty.
1.  Fill tank with clean, fresh fuel.
2.  Fill tank with clean, fresh fuel.
3.  Clean or replace filter.
Fuel contaminated or stale.
Fuel filter clogged.
Starting procedure incorrect.
Fuel pump malfunctions.
Spark plug(s) fouled or incorrect type.
4.  Read “STARTING ENGINE” section.
5.  Have serviced by a Yamaha dealer.
6.  Inspect spark plug(s). Clean or
replace with recommended type.
7.  Check and re-fit cap(s).
B.  Engine will not start
(Starter operates).
7.
8.
Spark plug cap(s) fitted incorrectly.
Poor connections or damaged ignition
wiring.
8.  Check wires for wear or breaks.
Tighten all loose connections.
Replace worn or broken wires.
9.  Have serviced by a Yamaha dealer.
10.  Attach lanyard.
9.
Ignition parts faulty.
10.
Engine stop switch lanyard not
attached.
11.
1.
Engine inner parts damaged.
11.  Have serviced by a Yamaha dealer.
Spark plug(s) fouled or incorrect type.
Fuel system obstructed.
1.  Inspect spark plug(s). Clean or
replace with recommended type.
2.  Check for pinched or kinked fuel line
or other obstructions in fuel system.
3.  Fill tank with clean, fresh fuel.
4.  Clean or replace filter.
2.
C.  Engine idles
3.
4.
5.
6.
7.
Fuel contaminated or stale.
Fuel filter clogged.
irregularly or stalls.
Failed ignition parts.
5.  Have serviced by a Yamaha dealer.
6.  Find and correct cause of warning.
7.  Inspect and adjust as specified.
Warning system activated.
Spark plug gap incorrect.
5-1
Product Specification
CategoriesYamaha Outboard Manuals
Document TypeBoat Motor Manual Free Download. Marine Operator's Boating Guide.
Tags,
Model Year2004
Download File
Please Enter the Security Characters Shown Below. Letters are Case Sensitive. Your download link will appear upon completing this step.
- 117 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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