It’s the 8” lever just right of steering wheel. There are 4 hydraulic hoses that connect to the base of the lever in what appears to be a valve junction. The lever raises and lowers the bucket and dumps the bucket. It is not mounted on the loader itself But right next to the vertical frame of the loader arm.Yep, that's a Yanmar Front Loader and Tractor. The loader is possibly an ALO - made in Canada for Yanmar and sold there and to USA Yanmar dealers in the USA back when Yanmar had a lot of US dealers...which was before they pulled out to make tractors for JD.
But what's a lift lever/handle? Is it on the loader control valve or on the loader itself?