284LE block drain plug for coolant location

It is on the left side of the engine (viewed from the tractor seat).

Mine had a valve screwed into the block with a handle that stuck up a short ways. There was a molded rubber hose that hung down from the valve which was handy to direct the flow into a bucket.

In the picture I have removed the drop down hose and attached a hose that leads to a tank heater that I installed. I have since changed this configuration as the original valve started leaking. The block was actually tapped with a standard English pipe thread so it was really easy to find a replacement.

Hit send too soon:

The red hose is where the bucket drain hose used to be. You can see the injection pump to the left and the oil level dip stick to the right. If you look behind the hose clamp on the red hose, you can see the black handle attached to the valve with a cotter key. The valve itself was made of brass and had a short nipple sticking out that the hose was stuck onto.

This was a 2006 built Jinma 284. Everything was painted black on the engine. I may have the old valve and can easily take pictures of it or the engine if you need to see more.

What year is your engine? It may not be the same.