Inspection Of Spark Plugs - TOHATSU MFS 4 Service Manual

10) Inspection of Spark Plugs

1. Remove plug caps and then spark plugs.
2. Use spark plug cleaner or wire brush to clean spark plug
electrodes 1. Replace if necessary.
Check electrodes 1 for corrosion or excessive build up of
3.
carbon, and washer 2 for damage. Replace if necessary.
Check spark plug gap a. Replace if it is over specified
4.
value. Adjust gap if it is out of specified range.
Spark Plug Gap a : Standard value
0.8 - 0.9mm (0.031 - 0.035in)
Functional Limit :
1.2mm (0.047in)
Specified Spark Plug :
DCPR6E [NGK]
5. Install spark plug, fully hand-tighten, and then use plug
wrench to tighten to specified torque.
Spark Plugs :
18 N · m (13 lb · ft) [1.8 kgf · m]
4st 4/5/6 2011
1
2
a
3
2
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