It is located behind the front right panel.
The spark plug gap on a 2000 Kodiak 400 is .024
it could be a bad spark plug wire or the plug could be gapped to much
According to the Yamaha Parts Catalog online you need Yamaha Part # 94701-00333-00, SPARK PLUG NGK Standard DR8EA #7162 Gap .024 See Links. Hope This Helps.
.6mm or 23/1000's
check the manual silly, its not that hard to find!
The correct spark plug for this motorcycle is: NGK D8EA
The spark plug gap for a Yamaha Big Bear 400 should be set at .024 inches. A new spark plug may be purchased at an auto parts store with the gap preset.
.045
035
.060
.028
.028