TOHATSU MFS 8B Service Manual page 67

2. Use spark plug cleaner or wire brush to clean spark plug
electrodes . Replace if necessary.
3. Check electrodes
carbon, and washer
4. Check spark plug gap
value. Adjust gap if it is out of specified range.
Spark Plug Gap
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]
1. Start and run engine for 5 minutes to warm up, and then stop.
2. Shift gear into neutral (N).
3. Remove lock plate (of stop switch lanyard) from stop switch.
4. Remove all plug caps and then all spark plugs.
5. Install compression gauge
Compression Gauge
P/N. 3AC-99030-0
4st 8/9.8 2016
for corrosion or excessive build up of
for damage. Replace if necessary.
. Replace if it is over specified
: Standard value
to plug hole.
:
3-17