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Coolant Change

rustyeyed

2016
CBR650F ABS
Messages
685
Likes
203
Location
United Kingdom
#22
Word of caution: Coolant needs to be non silicate and compatible with Mag alloy engines. Read their labels. Silicates kill the seals and you will get pump failure.

Not teaching anyone to suck eggs but, the right way to drain all coolant is the drain bolt on the water pump, you will need a new copper crush washer. The bleed screw on the left handside of the bike is for air bleed, then rest of the system is air bled and fed from the main rad inlet.
 

Slickvic

2015
CBR650F
Messages
29
Likes
25
Location
Brookfield, WI
#25
Hey does anybody know if the factory coolant is inert if the bike was sitting in the showroom for 2 years before I bought it?

In other words, do the 2 years in the showroom count as 2 years of aged coolant or does the aging of the coolant begin when I started riding it?
 

Daniel

2014
CB650F ABS
Messages
331
Likes
217
#26
Hey does anybody know if the factory coolant is inert if the bike was sitting in the showroom for 2 years before I bought it?

In other words, do the 2 years in the showroom count as 2 years of aged coolant or does the aging of the coolant begin when I started riding it?
Since the service manual says change after 3 years I would say it's a time based change. You will be fine for 6 months yet, I've had my original coolant in 3 and a half years now with no issues. But will be changing it next week.
 

Daniel

2014
CB650F ABS
Messages
331
Likes
217
#30
Having done this today thought I would provide my 2 cents on what I learnt.

Service manual does state 2.5l but despite my best efforts I managed only 2.2l - 2.3l. It states to leave upright when filling but does not say what position to drain but obviously, it's more effective lent on the side stand.

Removing the water pump drain bolt, air bleed bolt and reserve tank siphon hose will allow it to fully drain properly. Once drained I poured half a litre of water in to wash away the dregs. Replenishing the system used almost exactly 2l and the reserve tank a further ~250ml.

I found it difficult to locate the siphon hose initially but it's actually very easy. At the bottom of the reserve tank, left side, probably hidden behind several other hoses. Once pushed aside you should see it clearly. Images below for reference. I used Putoline Ultracool 12 coolant, I also have 700ml left if anyone UK based wants it to save buying a third bottle. Pay postage and it's yours! 👍🏼

20180809_204029.jpg

20180809_203901.jpg
 
Last edited:
Messages
40
Likes
34
#33
I usually go to Honda dealer and buy the coolant there to use on my bike don't know if there's any side effects If I remember correctly it's a blue coolant and it says "non-silicate" and Aluminum compatible. Way cheaper than the one from the bike dealer.
 

Road Hog

2014
CBR650F ABS
Messages
740
Likes
551
Location
Thailand
#34
I think you guy are making a job that is easy,very hard.When i changed my coolant last year i just drained my coolant

than started the bike adding vinegar and water to clean the system.Then filled it with honda coolant.As i live in a very

hot place i change my coolant more often then the book saids.Have i shown you guys my weather lately?It's winter

and very cold!

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bobstrax

2017
CB650F ABS
Messages
354
Likes
270
Location
Lincolnshire
#35
I think you guy are making a job that is easy,very hard.When i changed my coolant last year i just drained my coolant

than started the bike adding vinegar and water to clean the system.Then filled it with honda coolant.As i live in a very

hot place i change my coolant more often then the book saids.Have i shown you guys my weather lately?It's winter

and very cold!

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Stop it !!! Roadhog, it's white frost outside and you've got 30+ temps for wks :((.....can you remember what frost looks like ? ;)
 

Road Hog

2014
CBR650F ABS
Messages
740
Likes
551
Location
Thailand
#36
Stop it !!! Roadhog, it's white frost outside and you've got 30+ temps for wks :((.....can you remember what frost looks like ? ;)

Every time i stick my head in my freezer,Sorry guys this global warming is great! Until summer comes!
 

Road Hog

2014
CBR650F ABS
Messages
740
Likes
551
Location
Thailand
#37
Well summer is here and it is getting harder and harder to ride over here.The smog is so thick you can

cut the air with a knife and next week we have the thai new year.The water throwing should start as early

as tomorrow and yes they love throwing buckets of water at motorcycles and some put ice in the bucket.

Anyhow, it should be fun!Just have a look at my hot ass weather!

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Brammers

2014
CBR650F ABS
Mod
Messages
2,413
Likes
990
Location
Hampshire, England
#39
Any 12mm (ID) copper crush washer will do :)

Or pay £2.50 for a single Honda OEM aluminium one. Can't get to the oem part# right now, should be an easy google though - or check fowlers parts.