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EMU01204¯
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 possi-
ble 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.
Trouble
Possible Cause
Remedy
1.
2.
Battery capacity weak or low.
1. Check battery condition. Use
battery of recommended capacity.
2. Tighten battery cables and clean
battery terminals.
Battery connections loose or
corroded.
A. Starter will not
operate.
3. Fuse for electric start circuit blown.
3. Check for cause of electric
overload and repair. Replace fuse
with one of correct amperage.
4. Have serviced by a Yamaha
dealer.
4.
5.
Starter components faulty.
Shift lever in gear.
5. Shift to neutral.
1.
2.
3.
4.
Fuel tank empty.
Fuel contaminated or stale.
Fuel filter clogged.
1. Fill tank with clean, fresh fuel.
2. Fill tank with clean, fresh fuel.
3. Clean or replace filter.
4. Read "STARTING ENGINE"
section.
Starting procedure incorrect.
5.
6.
Fuel pump malfunctions.
5. Have serviced by a Yamaha
dealer.
Spark plug(s) fouled or incorrect
type.
6. Inspect spark plug(s). Clean or
replace with recommended type.
7. Check and re-fit cap(s).
8. Check wires for wear or breaks.
Tighten all loose connections.
Replace worn or broken wires.
9. Have serviced by a Yamaha
dealer.
B.
Engine will not
start (Starter
operates).
7. Spark plug cap(s) fitted incorrectly.
8. Poor connections or damaged
ignition wiring.
9.
10.
11.
Ignition parts faulty.
Engine stop switch lanyard not
attached.
Engine inner parts damaged.
10. Attach lanyard.
11. Have serviced by a Yamaha
dealer.
5-1
| Categories | Yamaha Outboard Manuals |
|---|---|
| Document Type | Boat Motor Manual Free Download. Marine Operator's Boating Guide. |
| Tags | Yamaha 40C, Yamaha 50C |
| Model Year | 2004 |
| Download File |
|
| Language | English |
| Product Brand | Yamaha 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 Type | |
| Publisher | yamaha-motor.com |
| Wikipedia's Page | Yamaha Motor Company |
| Copyright | Attribution Non-commercial |
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