.020 - .025
The spark plug gap on a 2001 Mercedes S600 should measure .044 inches. A new spark plug will come with the gap already set and should not need to be adjusted any further.
.020" to .025"
The 2001 Toyota Sienna spark plug gap is .023. Most spark plugs will be pre-gapped by the manufacture of the spark plug.
The spark plug gap setting for a 2001 Suzuki RM 250 should be set at .024 inches. This is equal to about .6 mm.
Usually the gap should be from .020"-.024"
every 30,000 miles
Pull the wire off the spark plug, pull the spark plug out, plug the spark plug back into the wire, then have someone turn the engine over. You should see a blue spark jumping around the very bottom of the spark plug.
Give the spark plug boot a twist to free it from the spark plug then pull it off of the spark plug by the boot.
Per the Yamaha service manual, a 2001 Warrior uses a NGKD8EA plug and the gap should be 0.024" to 0.028"
follow the plug wires
It should be in the owner's manual or if you don't have that the answer is 1.1 mm.
if you buy a new spark plug for your 2001 xr80r and it has a gap setting, set the setting all the way to the top of the plug as far as you can get it.