Almost there! Time to flush the coolant.. - Honda Shadow Forums : Shadow Motorcycle Forum
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post #1 of 6 (permalink) Old 04-19-2017, 06:06 PM Thread Starter
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Almost there! Time to flush the coolant..

Alright friends! I'm almost about done with the '84 700. I just need to hook up the fuel pump to the battery to prime the carbs and completely flush the coolant system considering its filled with distilled water. While I have an idea about how to hook up the pump, I have no clue how to flush the distilled water from the system.

All I could find from googling was that there no drain bolt and I should just unplug the coolant hose from the radiator and it should drain from there. But how in the hell do I drain the water from the reserve tank? Does it drain from the hose as well?

Promise to get pics up after the single seat mount gets here haha

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post #2 of 6 (permalink) Old 04-19-2017, 06:45 PM
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Do you actually have any water or coolant in your reserve tank? I'd be surprised. If you do, and you want to get it out you have two options. #1: Syphon it out with a thin tube or #2: Disconnect it and drain it manually. What you've Googled is 100% correct. There is no drain plug in the system so the best way to drain your system is to disconnect the hoses from the back of the radiator and let it flow out. Hope you enjoy that /84.

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post #3 of 6 (permalink) Old 04-19-2017, 07:58 PM
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Use a hand soap pump. Just stick it in the reserve tank and pump away. I always have the wife save the old hand soap pumps for me. They come in handy for stuff like that. Work good if you overfill your oil too, you just pump a little out.

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post #4 of 6 (permalink) Old 04-19-2017, 08:57 PM
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There is a small bolt on the water pump that will drain the coolant from the main system, but I used the lower hose at the pump to get it out faster.
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post #5 of 6 (permalink) Old 04-19-2017, 11:43 PM Thread Starter
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Well looks like this is what I'll be doing tomorrow, thanks guys!
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post #6 of 6 (permalink) Old 04-20-2017, 09:12 PM
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I don't have that bike but suspect if you take a look under the reserve tank you will find a hose with a small spring clamp. My engines drain at waterpump and at reserve tank.

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