Honda FG400 User Manual download pdf (Page 37)

SERVICING YOUR HONDA TILLER

SPARK PLUG SERVICE

Recommended spark plug: BPR6ES

(NGK)

Incorrect spark plugs can cause engine damage.

1. Disconnect the spark plug cap, and remove any dirt from around the spark

plug area.

Remove the spark plug with a 13/16-inch spark plug wrench.

PULG

WRENCH

3. Inspect the spark plug. Replace it

the

electrodes are worn, or

the insulator

(0.70

0.80

mm)

is cracked or chipped.

Measure the spark plug electrode gap

with a suitable gauge. The gap should

0.028

0.031 in

(0.70

0.80

mm).

Correct the gap, if necessary, by care-

fully bending the side electrode.

Install thesparkplug carefully, by hand,

to avoid cross-threading.

After the spark plug seats, tighten with

a 13/16

inch spark plug wrench to

compress the washer.

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Honda FG400 User Manual Page 37