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What is the spark plug gap setting for a 1987 yamaha big bear
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.
stater is not working properly.
the gap is .025
1998
gap for my 1995 big bear 350 is 0.6-0.7 mm or .024-.028 in.
96-99 Yamaha Big Bear & Kodiak. Excluding 96 Big Bear 350 4X4.
The VIN number you provided, JY44WUW01WA057274, indicates that your Yamaha Big Bear was manufactured in the year 1998. The 10th character of the VIN, which is "W," corresponds to that year in Yamaha's coding system.
0.6 - 0.7 mm gap or 0.024 - 0.028 inch ----
.003" intake and .005" exhaust is a good bet, and within .002" of 95% of all the yamaha's
check the regulator under the seat its the small finned box
A Yamaha Big Bear ATV may not be getting spark due to several potential issues. Common causes include a faulty ignition coil, a defective spark plug, or issues with the wiring and connections in the ignition system. Additionally, a malfunctioning CDI (Capacitor Discharge Ignition) unit or a blown fuse can also lead to a lack of spark. It's advisable to systematically check these components to identify and resolve the issue.