5-2
E
Engine runs irregu-
larly or stalls
Fuel Empty Refill as soon as possi-
ble
3-3
Stale or contaminated Have serviced by
Yamaha dealer
4-10
Choke Knob pulled Push fully in 2-10
Fuel filter Clogged or water
pooled
Have serviced by
Yamaha dealer
4-11
Fuel tank Water or dirt present Have serviced by
Yamaha dealer
4-11
Spark plug Fouled or defective Replace 4-15
Incorrect heat range Replace 4-15
Gap incorrect Adjust 4-15
Spark plug cap Loose Connect properly 4-15
Cracked, torn, or dam-
aged
Replace
—
Electrical wir-
ing
Loose connection Tighten or connect
properly
—
Carburetor Incorrect idle adjust-
ment
Adjust idle
4-22
Clogged Have serviced by
Yamaha dealer
—
Warning light or
indicator blinks
Fuel level Empty Refill as soon as possi-
ble
3-3
Engine oil level Empty Refill immediately 3-4
Oil filter clogged Clean 4-12
Engine over-
heated
Jet intake clogged Clean
5-4
Low battery
voltage
Battery voltage low Charge 4-20
Battery terminal con-
nected wrong
Connect properly
4-20
TROUBLE POSSIBLE CAUSE REMEDY PAGE
UF1F10.book Page 2 Monday, September 3, 2001 9:26 AM
