Most, if not all, the coolant in the radiator reservoir will pour out when you pull the water pump. Drain the radiator and save the coolant (if you plan to re-use it) before removing the water pump.
A KX85 just needs regular green premixed engine coolant. To replace the coolant in the engine system, simply drain the current coolant and refill. There is no need to flush the system before replacing.
Disconnect the battery and drain the coolant.
You drain coolant from the radiator. but according to the book ther are two plugs on the engine block that need to drain the coolant from.
Answering "Where is engine coolant drain plug for a 1.8 Nissan sentra engine?"
You will have to drain part of the coolant. Try to drain as little as possible and fill up before restarting the engine. No, the thermostat is usually at the top of the engine block (placed between the top input hose and the block). If, however, the radiator is full of coolant, there will be some spillage. Also, make sure the coolant has cooled down before replacement, and do periodically replace the coolant as needed.
Place something to catch the engine coolant beneath your 1990 Chevy Corsica radiator. Remove the radiator drain plug with a 9/16 ratchet. The engine coolant will drain out.
The engine coolant drain plug on a Mitsubishi V6 engine is located on the bottom of the radiator. This allows for coolant to be quickly and easily drained.
The 2002 Tacoma engine block will have two coolant drain plugs on each side of the block. The coolant drain plugs will be near the front and the rear of the engine block.
The coolant drain plug is located on bottom corner of radiator facing engine.
The 1994 Lincoln Town Car 4.6 liter engine coolant drain plugs can be found on each side of the engine block. There will be a total of four engine coolant drain plugs.
Assuming there is coolant in the engine the most likely cause is a build up of sediment behind the coolant drain or in the coolant drain tap itself.
You probably will get some coolant in the engine oil. It would be best to drain the radiator and block before disassembly.