gap for my 1995 big bear 350 is 0.6-0.7 mm or .024-.028 in.
What is the spark plug gap setting for a 1987 yamaha big bear
.032
check the regulator under the seat its the small finned box
.7 - .8 mm
11/16inch or 18mm socket.
Generally, .028" unless you have a weak stator or coil.
The service manual says(0.024~0.028 in) Type-D8EA (NGK)
I have a Yamaha 350 big bear, and differential drain plug is on the bottom of the differential. Just remove the plug and let it drain, put the plug back in and fill it back up... i use just regular gear oil
Per the Yamaha service manual, a 2001 Warrior uses a NGKD8EA plug and the gap should be 0.024" to 0.028"
The 1986 Chevrolet 350 cubic inch engine spark plug gap is .027. Most spark plugs will be pre-gapped by the spark plug manufacturer.
AnswerThe spark plug gap is .035 on a 1993 GMC 350 TBI.
Mukini