SPARKPLUG
Standard Plugs :
P-DAM: BMR-GA(NGK)_ or
W20MR-U(ND)
S-XAM: BPM6A-lO(NGK) or W2OMP-UlO(ND)
1. Disconnect the cap and remove the spark plug.
2. Visually inspect the plug. Discard the plug if it is
heavily deposited or if the insulator is cracked or
chipped.
3. Measure the plug gap with a wire-type feeler gauge;
it should be 0.6 - 0.7 mm (0.024 - 0.028 in) for
BM TYPE plugs, O.9- l.Omm (0.035-0.040 in) for
BPM TYPE plugs. If adjustment is necessary, bend
the side electrode carefully.
4. Make sure the sealing washer is in good condition,
then thread the spark plug in by hand until it seats.
5. Use the wrench to tighten a new plug l/2 turn fur-
Other to compress the washer. If you are reusing the
plug it should only take l/8 - l/4 turn after the
plug seats.
6. Replace the spark plug cap.
I
HI’.21 25
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