Author Topic: Radiator drain and flush  (Read 2531 times)

moparkid

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Radiator drain and flush
« on: March 30, 2016, 03:03:19 PM »
So looking thru my online repair manual for the DT 300 I was not able to ascertain the method to drain radiator.......Anyone got any tips or ideas? At 27,000 I REALLY need to change the fluid but our local Kymco dealers are less qualified than I am to do the work so I refuse to let them do it. Help please......Thanks!

CROSSBOLT

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Re: Radiator drain and flush
« Reply #1 on: March 30, 2016, 04:28:28 PM »
Mopar, there gotta be several threads here about this and I think the main emphasis is on "burping" when ya fill 'er back! The drain should be easy: disconnect the lowest, biggest hose with the radiator cap off or loose. Ain't sayin' anything more since I've never done it. Check the threads, they are there somewhere!

Karl
Karl

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pipster326

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Re: Radiator drain and flush
« Reply #2 on: March 30, 2016, 05:06:38 PM »
If you find any threads, please post them. I want to do a drain and flush on my 2012 DT 300, but I couldn't find any. Thanks


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moparkid

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Re: Radiator drain and flush
« Reply #3 on: March 30, 2016, 06:08:06 PM »
Crossbolt....I have entered any number of combinations to find information and I continue to come up empty. I'll keep looking.......

de dee

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Re: Radiator drain and flush
« Reply #4 on: March 30, 2016, 07:25:10 PM »
do it every two years ,  I am due again this year, do what Karl said and it will be OK. to simple ,for a show on it,.   think I seen a show for Vespas on it , don't remember,. the big thing is to get air out , same idea as doing a brake job,

CROSSBOLT

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Re: Radiator drain and flush
« Reply #5 on: March 30, 2016, 07:34:20 PM »
Mopar, go to the Yager posts, bikz on March 27 2015. Good outline there and good comments. Yager and DT systems very similar.

Karl
Karl

Three motorcycles 1960-1977 (restored a 1955 BSA)
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moparkid

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Re: Radiator drain and flush
« Reply #6 on: April 02, 2016, 10:59:01 PM »
Well I drained, flushed and filled at the top right below the windshield. Ran it and it went straight to HOT! The overflow bottle filled to half. What did I do wrong? I hope I didn't ruin my motor :-\.....


Update;

All is well. Had to remove several plastic body parts to get to the drain hose on the radiator. Of all the maintenance I have done on my bike the radiator drain and refill was by far the most time consuming. Next time I might just loosen the side body fairing panels and see if I can drop the skid plate to gain access to the drain hose.
« Last Edit: April 03, 2016, 02:23:11 AM by moparkid »

de dee

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Re: Radiator drain and flush
« Reply #7 on: April 03, 2016, 12:26:42 AM »
you have a air pocket in the motor, try tipping it over and shake the scooter, do it a lot,   or the air could be in the water pump,  as long as you don't ride much with the temp high ,  you should be OK.

CROSSBOLT

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Re: Radiator drain and flush
« Reply #8 on: April 03, 2016, 01:39:11 AM »
Did you find and use the reference I gave you BEFORE you started this?

Karl
Karl

Three motorcycles 1960-1977 (restored a 1955 BSA)
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moparkid

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Re: Radiator drain and flush
« Reply #9 on: April 03, 2016, 02:22:05 AM »
Yes Karl I did...and I found an earlier posting by someone who had an Xciting 200 (http://www.kymcoforum.com/index.php?topic=7703.0 )  so I used their method. Next time it wont be so bad. I made a few rookie first timer mistakes as one is prone to do.

CROSSBOLT

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Re: Radiator drain and flush
« Reply #10 on: April 03, 2016, 07:35:00 PM »
Outstanding! I trust the bike is running OK and did not suffer from that short overtemp....

Karl
Karl

Three motorcycles 1960-1977 (restored a 1955 BSA)
Agility 50
Yager 200i
Downtown 300i
Navy tech, Ships Engineer, pilot and aircraft mechanic

moparkid

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Re: Radiator drain and flush
« Reply #11 on: April 04, 2016, 06:24:35 PM »
No Karl...all is good. Rode all afternoon Sunday just to make sure. No damage. I don't know who designed the bike but they didn't go out of their way to make it user friendly but once you do something on the bike it makes it easier the next time. Thanks!

pipster326

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Re: Radiator drain and flush
« Reply #12 on: April 05, 2016, 07:47:38 AM »
Just did my first coolant flush and refill. You definitely have to take the side fairings off and of course the windshield, to get to the radiator. Popped the nylon rivets to get better access to the hoses. Took me about 2 1/2 hrs. From start to finish. Should be much quicker next time.


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pipster326

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Re: Radiator drain and flush
« Reply #13 on: April 05, 2016, 08:22:12 AM »
Just curious, do you remember how much coolant you put back in after you drained it? I used just under 1/2 gallon, between the radiator and overflow tank.


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de dee

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Re: Radiator drain and flush
« Reply #14 on: April 05, 2016, 10:31:36 AM »
coolant capacity 1719 cc   ( rad. 766 cc  reserve tank 590 cc. hose 363 cc.)

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