TOHATSU BFT 60A Manuel D'utilisateur page 118

SPARK PLUG
CAP
SPARK PLUG WRENCH
1. Remove the engine cover.
2. Remove the spark plug caps.
3. Use the spark plug wrench, 10 mm
box wrench and screwdriver
supplied in the tool kit to loose the
spark plugs.
4. Remove the 10 mm box wrench.
5. Use the spark plug wrench to
remove the spark plugs.
New plug
10 mm BOX
WRENCH
6. Inspect the spark plugs.
(1) If the electrodes are heavily
corroded or carbon-soiled,
clean with a wire brush.
(2) Replace a spark plug if the
SIDE ELECTRODE
Plug needing
replacement
7. Measure the plug gaps with a
wire-type feeler gauge.
The gaps should be 0.8 – 0.9 mm
(0.031 – 0.035 in). Correct as
necessary by carefully bending the
side electrode.
MAINTENANCE
central electrode is worn.
The spark plug can wear out in
different ways.
If the sealing washer shows
signs of wear, or if the
insulators are cracked or
chipped, replace the spark
plugs.
0.8 – 0.9 mm
(0.031 – 0.035 in)
SEALING WASHER
INSULATOR
115