Maintenance
52
5.
When fitting the plug, always clean the
gasket surface and use a new gasket.
Wipe off any dirt from the threads and
screw in the spark plug to the correct
torque.
NOTE:
If a torque-wrench is not available when you
are fitting a spark plug, a good estimate of the
correct torque is 1/4 to 1/2 a turn past finger-
tight. Have the spark plug adjusted to the cor-
rect torque as soon as possible with a torque-
wrench.
6.
Install the spark plug cap and tighten the
bolts.
7.
Install the ignition coil cover and tighten
the bolts.
EMU28962
Checking fuel system
WARNING
EWM00060
Gasoline and its vapors are highly flam-
mable and explosive. Keep away from
sparks, cigarettes, flames, or other sourc-
es of ignition.
WARNING
EWM00910
Leaking fuel can result in fire or explosion.
●
Check for fuel leakage regularly.
●
If any fuel leakage is found, the fuel sys-
tem must be repaired by a qualified me-
chanic. Improper repairs can make the
outboard unsafe to operate.
Check the fuel lines for leaks, crack, or mal-
function. If a problem is found, your Yamaha
dealer or other qualified mechanic should re-
pair it immediately.
Checkpoints
1. Spark plug gap
2. Spark plug I.D. mark (NGK)
Spark plug gap:
1.0–1.1 mm (0.039–0.043 in)
Spark plug torque:
25.0 Nm (18.4 ft-lb) (2.55 kgf-m)
U6P212E0.book Page 52 Monday, June 6, 2005 4:23 PM
Summary of Contents for F250 LF250
Page 1: ...F250 LF250 OWNER S MANUAL LIT 18626 06 80 6P2 28199 12 U S A Edition ...
Page 77: ...Consumer information 71 U6P212E0 book Page 71 Monday June 6 2005 4 23 PM ...
Page 79: ...Consumer information 73 U6P212E0 book Page 73 Monday June 6 2005 4 23 PM ...
Page 81: ...May 2005 2 4 1 CR Printed in Japan Printed on recycled paper YAMAHA MOTOR CORPORATION USA ...
Page 83: ...PLACE POSTAGE HERE ATTN WARRANTY DEPARTMENT Warranty card 2 27 02 11 47 AM Page 2 ...
