The yamaha rhino regardless of engine size uses the engine oil as the lubricant for the transmission. Its all one unit. If you check the engine oil your checking the Transmission Fluid also. To check the oil remove the passenger seat and the oil dipstick should be right there towards the front of the engine.
You can also check and should check the front and rear final drives (differentials) fluids too occasionally. There are 2 plugs the top one is the check plug the bottom is the drain plug. The gear oil should just be level with the bottom of the fill opening or slightly seeping out.
2.11 with a filter
For the Yamaha 660 Rhino, it's recommended to use 80W-90 or 75W-90 gear oil for the differential. Always check the owner's manual for specific requirements and ensure the oil meets API GL-5 specifications. Regular maintenance and oil changes can help prolong the life of the differential.
For a Yamaha Rhino 660, the recommended oil filter is the Yamaha part number 5UG-13440-00-00. Additionally, many users also opt for aftermarket options like the K&N KN-138 or the HiFlo HF138, which are compatible and offer good performance. Always ensure that the filter meets OEM specifications for optimal engine protection.
2.2 quarts
10W40
12
2.6 US QTS
The Yamaha Raptor 660 takes 3 Quarts 4-Stroke Oil or 10w/40.
To check the transmission fluid on a 2005 Yamaha Grizzly 660, locate the transmission oil dipstick, which is typically found on the right side of the engine. Remove the dipstick, wipe it clean, and reinsert it to check the fluid level. The fluid should be at the proper level indicated on the dipstick. If necessary, add the appropriate transmission oil through the dipstick tube.
80w90 hypoid oil. I use Mobile 1 synthetic in my Rhino gear boxes.
sounds like the oil pump went out
It says 2.6 QTS