HONDA GX25 - Manual (Page 21)

21
If the engine has been running, the muffler will be very hot. Be
careful not to touch the muffler.
0.60 0.70 mm
(0.024 0.028 in)
SPARK PLUG
SPARK PLUG CAP
Visually inspect the spark plug. Discard the spark plug if there is
apparent wear, or if the insulator is cracked or chipped. Clean
the spark plug with a wire brush if it is to be reused.
Remove the spark plug cap and use the proper size spark plug
wrench to remove the spark plug.
Measure the plug gap with a feeler gauge. Correct as necessary
by bending the side electrode.
The gap should be:
0.60
0.70 mm (0.024 0.028 in)
Remove any dirt from around the spark plug area. 2.
3.
4.
5.