The proper spark plug gap for a 2002 Yamaha YZ250 is .024 inches. New spark plugs usually come pre-gapped, however.
The 2004 Viper Yamaha spark plug gap is .018. Most spark plugs will be pre-gapped by the spark plug manufacturer.
The proper spark plug gap for a 1997 Yamaha YZF600 should be .028 inches. The best spark plugs to use in a YZF600 are copper.
The spark plug gap is .020 on your gapper gauge!
The spark plug gap for a 1994 Yamaha YZ250 should be .024 inches. A Yamaha YZ250 is a 249cc motorcycle.
.30 to .35
The 1998 model, Yamaha 250 hp outboard, requires an NGK BR9HS-10 spark plug, gapped to .039 in.
the gap is 0.024
between .28 - .31"
.032
.7-.8mm
Suggest you call a Yamaha dealer for info.
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