2022 Kymco AK550 anti-freeze leak

[Dale]

I bought this scooter new and noticed a small anti-freeze leak. The main tech at the dealer said no problem, that it will happen occasionally also others on the forum had a similar problem. After 2 years and 3000 miles it has grown worse. There is now a small puddle almost every week. It must be coming from the water pump and by now there should be a trail that I can follow to the source. I have no idea how to get to the water pump or how difficult it might be. Even if I can't fix it, at least I'll know what I'm dealing with. Any suggestions!

[rjs987]

If it were just a once in a big while drop on the floor then that is not an issue. I've seen that on more than one bike.
But yours seems to be becoming an issue that should be taken care of. The coolant pump (water pump) is located on the left side at the front bottom of the alternator housing. Because the alternator is dry there are 2 seal bearings on the shaft from the alternator out to the water pump. There is a weep hole between the 2 seal bearings to prevent any coolant from getting into the alternator housing. That is likely where the drip is coming from. Check the bottom directly under the water pump to see if there is any coolant there. The problem is likely the outer seal bearing. Here is a pic showing locations and another link for the service manual that can help in fixing this issue. Download the service manual PDF file for easier viewing. You will likely need to remove the left foot board to get to the water pump even though it somewhat hangs below the bottom of that panel.

https://photos.app.goo.gl/1qTDdGDQe3uLBtqk8

https://drive.google.com/file/d/1M-nAUW1Ay0L6bK50D_EMwYPFT_4-YeDj/view?usp=drive_link

I currently have over 16600 miles on mine in less than 3 years. The only two times I had a very minor drip, at different times, happened within the first 7000 miles. But no drips since. That was 2 years ago.

[Dale]

Thanks Bob, I didn't think anyone would have the service manual on so new a scooter. I already downloaded it and it will take me awhile to understand it all.

[rjs987]

Thanks Bob, I didn't think anyone would have the service manual on so new a scooter. I already downloaded it and it will take me awhile to understand it all.

The AK 550 is not really as new as some think. It was first distributed in 2017 but only first came to the USA with the 2021 model year. I consider this to show how well proven this super scooter is. This service manual was what I could find from the Austrian Kymco head office... www.Kymco.at
Found it in their technical documents download page. There is also a color electrical diagram. I believe both were published for the 2020 Euro 4 model but there is VERY LITTLE difference since then. Nothing significant that I can find. I think last year Cyclepedia published another service manual based on the 2021 or 2022 USA version of the AK. Not sure if it is as complete as the official manual that I have.

Here is a link to my copy of the electrical diagram. I normally have to zoom in to 200% or 300% to clearly read it.
https://drive.google.com/file/d/1M48vAJRF57y060p1fRAHnw0bEhk3DBpd/view?usp=drive_link

[Dale]

After looking at the service manual, I could see this was way beyond my capabilities. Had Sun and Fun Motorsports pick it up and repair it. They also did some annual maintenance. Its a little crowded in my garage with my big lawn tractor and 2 scooters than the car behind them. Maybe I'll sell one, well see.