Drained radiator to change coolant. How do you refill radiator when reservoir only takes about 3/4 of a quart? 2005 VULCAN 1500

Try this remov upper radiator hose from engine block and fill that way without running the engine. Then when radiator is full meaning can no longer add coolant through hose reconnect hose start engine and add coolant to reservoir

The radiator must have an internal leak between the coolant and the reservoir for cooling the transmission fluid. Replace the radiator, drain and flush the engine and heater core, and drain and replace the transmission filter. You will need to remove the lower transmission pan, let it drain out (about 6 quarts), then replace the filter that is there, just underneath the pan. If you see any evidence of coolant in the transmission fluid, put it back together, run the vehicle for a bit-till the engine has warmed up, a short drive should do-then shut it off and drain the transmission fluid again.

When the transmission is drained this way, not all the transmission fluid will be drained-about half will still be in there, mostly in the torque converter. So if the fluid is contaminated, you need to drain and refill at least twice.

The engine holds coolant and so does the heater core, the core not much but the engine holds maybe 2 or so gallons, the engine has coolant in the intake ,heads and block. to say you can drain it all complete is impossible, unless you find drain plugs on the side of the engine block and remove them, there is one on each side of the block, if you removed those you would get 90% of the coolant,with also draining the radiator. the only other way would be with a flush machine. i am a tech and the way you said the coolant was clean and you drained all you could then i would say if you keep doing it the way you are you will be fine, i drain mine the same way every year which is to soon for some but not me and i have never had a problem. the only time i drain the blocks at work is when people dont change the coolant for years and it gets rusted, then i remove the plugs. keep doing the flush the way you are and it will be fine, good day. have a good day.

the oil level on my 09 vulcan 900 is 3.2 liters and you check the water level under the side panel.

Change and refill oil and change oil filter, refill coolant to it's level with proper mixture. Run bike on idle for 10-15 minutes, do a burst of revs and run constant rev at 5000 rpm for 20-30 secs, watch exhaust pipe smoke condition and if temperature gauge indicates overheating. Let bike cool off and check oil and coolant state. If you see milky oil, oily coolant and reservoir going empty, you may have a cracked cyl head walls. Happy hunting.

please rate, thx Coolant Recovery System NOTE: When the water thermostat (8575) is closed, there is no flow through the radiator coolant recovery reservoir (8A080).

Trapped air in the cooling system must be removed. A pressurized radiator coolant recovery reservoir system is used which continuously separates the air from the cooling system.

• When the water thermostat is open, coolant flows through the small hose from the top of the radiator outlet tank to the radiator coolant recovery reservoir.
• The radiator coolant recovery reservoir separates any trapped air from the coolant and replenishes the system through its radiator coolant recovery hose to the water thermostat housing.
• The radiator coolant recovery reservoir serves as the location for:
  • service fill
  • coolant expansion during warm-up
  • system pressurization from the pressure relief cap and
  • air separation during operation
• The radiator coolant recovery reservoir is designed to have approximately 0.5-1 liter (0.53-1.06 quarts) of air when cold to allow for coolant expansion.

under the the gas tank

always to the reservoir, never the radiator unless the system is being drained for service and refilled.