Inspection Of Spark Plugs - TOHATSU MX 50D2 Service Manual

Maintenance
a a 2 2
b
3-18

7) Inspection of Spark Plugs

1.
2.
1 1
3.
2 2
4.
5.
a
Remove plug caps and then spark plugs.
Clean spark plug electrodes 1 by using spark plug
cleaner. Replace if necessary.
Check electrodes 1 for corrosion or excessive build up of
carbon, and washer 2 for damage. Replace if necessary.
Check spark plug gap a. Replace if it is over specified
value. Adjust gap if it is out of specified range.
Spark Plug Gap a:Standard Value
0.9 - 1.0 mm (0.035 - 0.039 in)
Functional Limit:
1.2 mm (0.0472 in)
Specified Spark Plug:
B8HS-10
Install spark plug, fully hand-tighten a, and then use plug
wrench to tighten to specified torque b.
Spark Plug:
27 N · m (20 lb · ft) [2.7 kgf · m]
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 correct torque as
soon as possible with a torque-wrench.
GB
2st X50D2 2011