E
5-2
B. Engine idles
irregularly or stalls.
Trouble
Possible Cause
Remedy
1. Spark plug(s) fouled or incorrect
type.
2. Fuel system obstructed.
3. Fuel contaminated or stale.
4. Fuel filter clogged.
5. Failed ignition parts.
6. Spark plug gap incorrect.
7. Poor connections or damaged
ignition wiring.
8. Specified engine oil not used.
9. Thermostat faulty or clogged.
10. Carburetor adjustments incorrect.
11. Fuel pump damaged.
12. Air vent screw on the fuel tank
closed.
13. Choke knob pulled out.
14. Motor angle too high.
15. Carburetor clogged.
16. Fuel joint connection incorrect.
17. Throttle valve adjustment incorrect.
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.
5. Have serviced by a Yamaha
dealer.
6. Inspect and adjust as specified.
7. Check wires for wear or breaks.
Tighten all loose connections.
Replace worn or broken wires.
8. Check and replace oil as specified.
9. Have serviced by a Yamaha
dealer.
10. Have serviced by a Yamaha
dealer.
11. Have serviced by a Yamaha
dealer.
12. Open the air vent screw.
13. Return to home position.
14. Return to normal operating
position.
15. Have serviced by a Yamaha
dealer.
16. Connect correctly.
17. Have serviced by a Yamaha
dealer.
63V-9-16-5 2/18/03 14:14 Page 3
Summary of Contents for 9.9C
Page 1: ...9 9C 15C OWNER S MANUAL U S A Edition LIT 18626 05 34...
Page 2: ......
Page 52: ...E MEMO...
Page 68: ...E 4 15 EMU00366 GREASING Yamaha marine grease Water resistant grease 103011...
Page 84: ...E MEMO...
Page 85: ...EMP00010 Chapter 6 INDEX INDEX 6 1 E 1 2 3 4 5 6...
Page 94: ...Printed in Japan March 2003 0 5 1 63V 28199 16 9 9FMH 15FMH E Printed on recycled paper...
Page 96: ...PLACE POSTAGE HERE ATTN WARRANTY DEPARTMENT Warranty card 2 27 02 11 47 AM Page 2...