Yamaha LF130 - Page 94

Maintenance
88
F115, LF115
F130, LF130
To check the spark plug
(1) Check the condition of the spark plug. If
electrode erosion becomes excessive or
carbon and other deposits are exces-
sive, replace the spark plug with the
specified plug.
(2) Measure the spark plug gap using a
thickness gauge. If the spark plug gap is
out of specification, replace the spark
plug with the specified plug.
To install the spark plug
(1) Wipe off any dirt from the threads, insu-
lator, and gasket surface of the spark
plug.
(2) Install the spark plug, and then tighten it
to the specified torque.
TIP:
If a torque-wrench is not available when you
are reinstalling a spark plug, a good estimate
of the correct torque is 1/12 turn past finger-
tight. When you are installing a new spark
plug, a good estimate of the correct torque is
1/2 turn past finger-tight.
(3) F115, LF115: Install the spark plug cap.
(4) F130, LF130: Install the ignition coil, and
then tighten the bolt to the specified
torque.
(5) Install the cover.
Standard spark plug:
LKR6E
ZMU08119
ZMU08215
1. Spark plug gap
2. Spark plug part number
3. Spark plug I.D. mark (NGK)
Spark plug gap:
0.8–0.9 mm (0.031–0.035 in)
Spark plug tightening torque:
25 N·m (2.5 kgf·m, 18 lb·ft)
Bolt tightening torque:
8 N·m (0.8 kgf·m, 5.9 lb·ft)
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U6EK38E0.book Page 88 Wednesday, December 1, 2021 10:35 AM