17mm plug in the bottom of the engine case. there will be a spring and screen that comes out with it
The Fourth Bear has 400 pages.
400-16000
.003" intake and .005" exhaust is a good bet, and within .002" of 95% of all the yamaha's
To change the transmission fluid on a 2007 Honda Rancher 400 ATV, locate the drain plug on the bottom of the transmission case and remove it to allow the old fluid to drain out. Once drained, replace the drain plug and remove the fill plug located on the side of the transmission. Use a funnel to add the recommended transmission fluid through the fill hole until it reaches the proper level. Finally, replace the fill plug securely.
The oil capacity for the Yamaha Big Bear 400 is 3.2 quarts. It is recommended you use 10w30 oil in the Big Bear.
Underneath and just about in the middle of the skid plate. There should be a hole in the skid plate so you can get at it. Hope that helps
400 pounds
driver side in the middle their will be a 3/4 inwrench nut to drain i out.
bulkhead seating LOCATION 747-400
where is the plug on the 400 4x4 ATV to drain the oil? Isn't the 400 a two stroke? No oil in case.
location graph starter ls 400
yamalube 10w30