TRBL
SHTG
Troubleshooting
9-7
62Y5A11
Symptom: The engine idle speed is not steady, but increases or decreases.
• Check the carburetors.
• Check the air intake system.
• Check the ignition system.
Replace the CDI unit.
Check and disassemble the car-
buretors, and then clean them if
necessary.
Out of specifi-
cation?
Do the valves
close simul-
taneously?
Check the second-
ary air intake on the
O-ring and manifold
plate, and the gas-
kets of the vacuum
check bolts.
Check the ignition timing.
Yes
Yes
No
No
Check the operation of the car-
buretor throttle valves by
removing the throttle cable and
link rods.
Check the operation of the
throttle cable and link rods.
Yes
No
Adjust the throttle cable and link
rods.
Good operat-
ing condition?
Summary of Contents for F100B
Page 1: ...SERVICE MANUAL 60C 28197 5D 11 290429 F100B F100C ...
Page 52: ...SPEC Specifications 2 17 60C5D11 MEMO ...
Page 162: ...LOWR Lower unit 6 15 60C5D11 Drive shaft and lower case F100B 6 ...
Page 190: ...LOWR Lower unit 6 43 60C5D11 Drive shaft and lower case F100C 6 ...
Page 200: ...LOWR Lower unit 6 53 60C5D11 Shimming F100C 6 ...
Page 209: ...60C5D11 7 2 1 2 3 4 5 6 7 8 9 MEMO Special service tools ...
Page 210: ...BRKT Bracket unit 7 3 60C5D11 Tiller handle 7 ...
Page 212: ...BRKT Bracket unit 7 5 60C5D11 ...
Page 214: ...BRKT Bracket unit 7 7 60C5D11 ...
Page 244: ...BRKT Bracket unit 7 37 60C5D11 Gear pump F100B 7 ...
Page 341: ......
Page 343: ......
Page 344: ...YAMAHA MOTOR CO LTD Printed in the Netherlands Jun 2001 0 5 1 CR F100BET F100CET E ...