Author Topic: DRZ 400 Coolant Replacement How To  (Read 18362 times)

skadamo

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DRZ 400 Coolant Replacement How To
« on: April 16, 2011, 05:19:00 AM »
Now that my radiator hose is fixed I need to repalace the coolant and bleed the system. Here are some answers to some of the questions I had...

What kind of coolant should I use in a DRZ400s?
50/50 mixed ethylene glycol green aluminum safe coolant.

How do I bleed the DRZ400 coolant system?
I found a great writeup here... http://www.thumpertalk.com/forum/archive/index.php/t-807820.html
However, it is missing an important step. You need to bleed the coolant pump too.

the bleed bolt is right in front of the cylinder near the top where the coolant line connects. I believe a thermostat is in that area. it is an 8mm bolt. A craftsman 8mm racheting wrench worked well for this. http://www.craftsman.com/shc/s/p_10155_12602_00942404000P
« Last Edit: April 16, 2011, 12:47:37 PM by admin »

skadamo

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DRZ 400 s Service Manual PDF Online
« Reply #1 on: April 16, 2011, 12:09:06 PM »

Dr. Quack

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Re: DRZ 400 Coolant Replacement How To
« Reply #2 on: April 22, 2012, 09:09:13 AM »
This is the best stuff.


There's two bleed points, one (Facing the bike) on top of front right radiator, two bottom left at the base of the water pump.
Release both > empty > flush through with a kettle of boiled water > add new coolant till it runs blue out of the bottom bleed point > loosely replace bleed bolt at the base of water pump > shake bike from side to side and keep adding coolant till it emerges through both bleed points freely > replace both bolts.

jordanf427

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Re: DRZ 400 Coolant Replacement How To
« Reply #3 on: November 11, 2012, 02:20:57 PM »
So, I just changed my coolant and I want to double check that there is only two bleeder screws.

One on the left radiator, and the other on the front of the engine.

Thanks