Gen 2 - how to add coolant to the reservoir? - Yamaha FJR Forum : Yamaha FJR Owners Forums
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post #1 of 18 (permalink) Old 06-16-2020, 12:43 PM Thread Starter
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Gen 2 - how to add coolant to the reservoir?

I feel like an idiot - I can see the overflow bottle/reservoir and it's a bit on the low side, so I'd like to just top it up a bit to prevent the radiator from sucking air on the next cooldown. But for the life of me, I cannot see how to get at the top cap to pull it out and add anything!

I have the GYSM for my 2008 and it's really not as instructive as one would hope.

Surely this has to be simpler than it looks?
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post #2 of 18 (permalink) Old 06-16-2020, 01:25 PM
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Did that a few days ago to 2016, which is different but might have similarities.

The adjustable side vent (which you don’t have) must be removed. The cap on the reservoir is rubber, just pulls off. A laboratory “wash bottle” or funnel with hose is needed to add fluid.
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post #3 of 18 (permalink) Old 06-16-2020, 01:30 PM
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Remove the vent panel from the left side.
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post #4 of 18 (permalink) Old 06-16-2020, 02:17 PM
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Remove the vent panel from the left side.
Long, narrow funnel helps.

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post #5 of 18 (permalink) Old 06-16-2020, 04:19 PM Thread Starter
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I'll go take a look - it's most-def not as simple as the Gen3 but hopefully some quality staring-at-the-bike time in the garage will make it all clear.
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post #6 of 18 (permalink) Old 06-16-2020, 04:55 PM
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I have an 08. No need to remove side panels. Small funnel with plastic hose. Lift lid an inch off top of coolant tank, slip hose into tank. Pour coolant into funnel. Will only take a 1/2 cup maybe. Pull hose out, push lid back into coolant tank. Go for a long ride someplace, stop for lunch then ride home. Repeat if needed. Don’t over fill.

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post #7 of 18 (permalink) Old 06-16-2020, 05:39 PM
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I have an 08. No need to remove side panels. Small funnel with plastic hose. Lift lid an inch off top of coolant tank, slip hose into tank. Pour coolant into funnel. Will only take a 1/2 cup maybe. Pull hose out, push lid back into coolant tank. Go for a long ride someplace, stop for lunch then ride home. Repeat if needed. Don’t over fill.
Ditto on my '07, no need to remove side panel. I use a long screwdriver that I wrapped with electrical so nothing gets scratched. Lift the cap off, long thin funnel or piece of hose for filling. Push the cap back on with said screwdriver.

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post #8 of 18 (permalink) Old 06-16-2020, 06:25 PM Thread Starter
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Yeah, it actually wasn't that bad once I started poking around. The reservoir top just doesn't intuitively feel like a cap, but it just pulls up and there ya go! It's all topped off now, and I have purchased fresh/clean coolant and a funky funnel... this weekend will be a complete drain and refill. Thanks, everyone!
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post #9 of 18 (permalink) Old 06-16-2020, 07:34 PM
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Yeah, it actually wasn't that bad once I started poking around. The reservoir top just doesn't intuitively feel like a cap, but it just pulls up and there ya go! It's all topped off now, and I have purchased fresh/clean coolant and a funky funnel... this weekend will be a complete drain and refill. Thanks, everyone!
A side note- I noticed yrs ago that the overflow reservoir will get cloudy if you don't remove & wash it out every couple yrs.
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post #10 of 18 (permalink) Old 06-16-2020, 10:20 PM
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A side note- I noticed yrs ago that the overflow reservoir will get cloudy if you don't remove & wash it out every couple yrs.
I was concerned about mine because I couldn’t see anything. Couldn’t get a dipstick inside to test. My long skinny funnel would not reach. Finally used the funnel to splash water in the hole. Then found it really was dry.

Spilled a lot more distilled water than hit the hole.

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