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Messages - rjs987

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1
General Discussion / Re: Hi! I got my AK 550! Few things to ask.
« on: November 11, 2024, 04:13:22 PM »
The final drive timing belt can wear faster if riding in really dusty/gravel infested roads or certain other conditions that might kick up a lot of trash into the timing belt cover. Those belts will not tolerate much junk, if any at all, getting between the belt teeth and the sprockets. The only part I know of that would need replacing when replacing the timing belt is the belt itself. If the front or rear sprockets are found to have damage then those would need attention as well but that should be really rare. No engine disassembly required to do this.

The clutch is on the left side just in front of the passenger foot peg. It is called the mission box in the service manual. Only the mission box needs to be pulled to replace parts in there.

I also do notice that the RPM of the engine is not linear with speed, nor is it proportional. There is a certain RPM required to get the AK moving. More to accelerate faster. But less to maintain a constant speed. RPM with a CVT has several factors involved. Centrifugal forces change the pulley ratios of course. More throttle will increase RPM which increases centrifugal force acting on the rollers. But load will counteract much of that throttle increase... such as more load for going uphill or into a headwind, less load for going downhill or with a tail wind, even while maintaining the same speed yet seeing higher or lower RPM respectively. Accelerating will also require more throttle = increasing the RPM = more load. I notice the RPM increase or decrease while keeping my speed constant when going up or down hills. This is all normal for a CVT. I have noticed my RPM varies from 4000 to 6000 at ANY speed between 45-65 mph depending on going uphill or downhill or accelerating or decelerating.

2
General Discussion / Re: Hi! I got my AK 550! Few things to ask.
« on: November 09, 2024, 05:30:05 PM »
Hey everyone!

Recently I joined the Kymco AK550 family! Living in Korea, it’s pretty rare to come across other AK550 owners, but lol here I am. I got a 2018 model with only 13,000 km on the clock (around 8,000 miles). It’s really in mint condition, and I just swapped out the stock Metzeler tires yesterday! and I’ve got a chinese Android Auto, Garmin, dash cam, OBD gauge, and 10Hz DIY Racing GPS installed. definitely some pretty cool setup for traveling around

I absolutely love my ak, its literally a beast. Its quick. Its comfortable, and yet very practical. still has a few quirks. those quirks that I’m facing now are the TPMS not working properly - sometimes it displays orange tpms light, and 100% chance it means tpms sensor connection somehow has a problem - and the parking brake light staying on, which is a bit annoying but still fine since it does not affect performance

I do have a few questions for experienced AK550 owners:

1. Where do you guys get your drive belts? I’ve seen prices ranging from $170 to $550, and yeah a single belt costs around 500 usd can't make any sense, even bmw belt is cheaper than 500 usd. What’s a fair price, and when would you recommend replacing it? In addition, I noticed some fabrics exposed on the side of the belt that's found around 10000km (6000miles) but haven’t experienced any issues like chirp. Is that normal?

2. For the clutch, I can get J-Costa and Malossi clutch disc set locally. Would you recommend either of these brands? And at what mileage should I look to replace the clutch components?

3. What’s the general lifespan on other transmission parts? I read about a TMAX owner who had a clutch replaced after 43,000 km with gentle driving.
For reference, my clutch engages at 2100 RPM, I’m at 5000 RPM at 100 km/h, tops out at 165-170. and I typically start out at 2500-3000 RPM. Does that sound normal, and recommended for the AK550?

4. Hows everyones fuel economy? I get around 20 km/l when pushing hard and up to 24 km/l when driving gently. Weather gets cold these days, and i found it dropped to 18km/l in 5 degrees celcius ambient temp with pushing hard. Just curious how that compares with yours!!

5. Mine makes bird like noise from a belt drive. Many local owners reported this issue, and they claims its a problem but will not affect its performance or parts lifespan, so try not to care about them for your mental health.

I also really like my AK 550. I have the 2022 USA model. Basically the same as the Euro4 model. I bought mine in early November of 2021 so have had my AK for 3 years now. I have about 18640 miles (about 30,000 km).

So far I've kept using the OEM Metzeler Feel Free tires since they are reasonably priced and last the typical miles for this class of bike.
I built a hitch for my AK and pull a Uni-Go mono-wheel cargo trailer when I go cross-country for camping.
This summer my TPMS stopped working right in the rear wheel and is starting to read wrong in the front as well. I know it is the battery in the sending unit that is getting spent. I have a good pencil tire gauge so I'm not concerned about that issue. TPMS is just a bonus feature to me that is an extra. I might think about replacing the sending unit next time I need to replace the tires but those units are $55 each so maybe not. It hasn't affected anything yet. When it was working fine before this summer I would see the tire warning come on solidly without any flashing wheel indication when PSI was too high or after stopping to go into a shop for 5 minutes and then continuing to ride. That last bit would only show the warning for a short time until tire temps and PSI equalized. It would indicate normally if PSI was low with a flashing warning and the front or rear tire indicator would also flash. Now I just ignore it since I can tell from the handling of the bike if the PSI is too low. I started riding bikes in 1979.

I don't know what to say about the parking brake light other than to double check that the parking brake is off (lever moved to the right all the way). And maybe try to go through the adjustment steps for the parking brake.

Now for your other questions:
1. I get many parts as needed from a few different sources but mostly from TBSS https://taiwanbigscootershop.com/collections/ak550. Do you mean the CVT belt when you say "drive belt"? The service manual calls the CVT belt a drive belt but it also calls the final drive belt (the one you see at the rear wheel sprocket) a drive (timing) belt. The service schedule calls the final drive belt a "timing belt" as well. I bought my CVT belt from TBSS and replaced it at 12,000 miles (20,000 km). It is normal for the CVT belt and also the final drive timing belt to show a bit of fabric on the sides. That is simply the fiberglass fibers sticking out a little and won't affect anything. Totally normal. The final drive timing belt should last about 65,000 miles (about 105,000 km) give or take a bit. It is basically the same type (construction, width, thickness) of final drive belt used on Harley Davidson bikes, as well as some Can-Am Spyder and even other brand/model motorcycles. and they last at least that long on those bikes. Just inspect the final drive timing belt often. At least every time the rear tire is replaced. The service schedule shows the interval for replacing the CVT belt. There is no set interval for replacing the final drive timing belt.

2. For clutch parts I'd check out TBSS. They have a LOT of parts for the AK. Compare prices. I don't know yet what kind of miles you'll get from the clutch parts but I mentioned how many miles I have on my AK and haven't detected any issues yet.

3. Transmission? Do you mean CVT? When I replaced the CVT belt at 12,000 miles (20,000 km) I did notice very slight wear on the outer variator plate. I might replace that plate next time the CVT belt gets replaced, or at least inspect it again and decide after that. I also am thinking of replacing the roller weights at the next CVT belt change. I did notice one roller starting to show a very little bit of flattening but it was barely detectable. No issues whatever with performance yet. The RPMs you mention are totally normal and recommended. I had something similar with my Burgman 650... especially at the lower RPM range where the clutch would engage at around 2100-2200 RPM.

4. Fuel economy matches with what you are getting. Usually I get between 52-57 mpg (22-24 km/l) depending on headwind or tailwind, and regardless of speeds. Actually, I get better economy at 45-60 mph (72-97 km/h). I got the same economy with my Burgman 650. So that's typical for this class of bike.

5. Bird-like noises could possibly be a belt squeal from the CVT. That would be caused by dust getting into the CVT. I did notice that several months ago on a longer trip I took after passing through a heavy cloud of dust kicked up by farm machines in the field. That is almost gone now though. You might want to check your CVT filter and clean it. No need to replace it unless it is damaged. No performance issues came of that and I don't expect any other issues from it either. Air is pulled into the CVT through the filter and blows out through open channels on the front and side of the CVT casing.

I hope this is helpful. I found the service manual as a downloadable PDF file at https://kymco.at/kymco_store_view/dowloads/kymco.html. You have to scroll down the page to find the AK 550 manuals. The manuals are in English even though the titles are Austrian/German (at least the manuals I downloaded are). There is also the electrical diagrams here in color.

3
General Discussion / Re: 1st time I've seen this on a car
« on: November 03, 2024, 04:35:40 PM »
I've seen that recently on a few cars around here. I think there may be a vehicle or two which has that from the factory now. About time cars catch up to scoots.

I've installed a LED tail light bar with flashing brake light (flashes for 6 seconds and then goes solid) on every bike I've owned in the last 15 years. LOTS more visibility from behind when stopping. Even installed one on my AK.

4
General Discussion / Re: Rear wheel removal and install.
« on: October 23, 2024, 06:50:17 PM »
Hello group I have a 2014 Xciting 500 in need of a new tire. A local shop said they are no longer a Kymco dealer and that I should bring just the wheel, this is also my cheaper option.
I have watched several videos and it doesn't appear to be difficult, but I worry about putting the wheel back on, safety first after all.
Should I use a torque wrench or just tighten bolts?  I've seen both options. where can I get torque specs, is there a post I can look at?
Thanks for the help.
Matt.

I don't know what model year these service manuals are for but they are downloadable PDF files and are in English, even though the web site is Austrian/German.
Go here: https://kymco.at/kymco_store_view/dowloads/kymco.html

Then scroll down to your specific model (500, 500i, 500i EVO ABS) and look for the item named "Werkstatt Handbuch Xciting 500..." which is the workstation service manual. Click on it and a PDF file will open which you can download and save someplace on your computer. You will be able to find the torque specs for the axle nut and brake caliper bolts in that manual.

There are also electrical diagrams there for each model. Look for the item named "Schaltplan Xciting 500i..." and those are the electrical diagrams. Unfortunately the printing, while it is in English, is really blurry in those.

5
General Discussion / Re: AK 550 Drive Belt
« on: October 04, 2024, 03:27:34 PM »
I've noted elsewhere that I now do use a 10 lb force tool for setting belt tension... same as HD owners do. I look for between 7/16 and 3/8 inch deflection of the belt with 10 lbs force using the tool at a point half way between the centers of the front and rear sprockets. I put a notch in the inner lower belt cover to fit the tool and only have to remove the outer lower cover to check the tension. Easy to do now and no expensive sonic tool or visits to the dealer.
This pic and video were done before I cut the notch but it is the same with the notch made.

https://photos.app.goo.gl/eXWXWupHjjypcFBC7

6
Technical | How To / Re: Speedometer question
« on: October 03, 2024, 08:53:50 PM »
Just a note: MOST vehicle speedometers are offset from actual. It's a percentage so how many mph it is off by should vary by how fast you are actually going. Less if the actual mph is slower and more if the actual mph is faster.
Cars are usually, on average, 3-6% offset from actual and motorcycles/scooters are, on average, up to 10-11% offset from actual. But always faster than actual. Manufacturers would be in serious legal trouble if any speedo showed slower than actual speed. My Subaru Legacy is spot on with a GPS and my Rav4 as well as my AK 550 are both 5.5% offset. My Burgman 650 was 10% or 11% offset depending on the tires. My CTX1300 was spot on with my GPS device. GPS devices are typically 0.3% offset from actual... so essentially accurate with an insignificant deviation.

7
Technical | How To / Re: Kymco AK550 parking brake issue
« on: October 02, 2024, 06:28:09 PM »
I have the manual, but I don’t know the cause of the parking brake led on and I can’t find it nowhere.

The best detail in the service manual is on page 10-18. I think the switch indicating the parking brake is "on" is just where the cable comes out of the sheath. Pressing the switch should turn off the parking brake light. The lever should press that switch. It is possible the switch is bad.
It sounds like the previous owner might not have properly adjusted the parking brake after changing the pads. They might not have even used the right pads. The adjuster is behind the air filter and under the plastic on the right side (I think).

8
General Discussion / Re: lady having too much fun in Springfield
« on: September 15, 2024, 01:23:32 PM »
OK, I’ll be the wet blanket.

I wince when I see no protective gear like this. Maybe only tooling around town at low speeds, but even so, gravel rash hurts like crazy!

I guess those pictures didn't show until I selected to quote this post. Looks like she has plenty of ablative material, too bad it's all just part of her body. I know all about road rash from when I was in HS and young and foolish riding my bicycle. Low sided that bike slightly under the side of a car that suddenly decided to take a right turn with no warning right in front of me. The scar on the side of my leg is finally almost gone now, 53 years later.

9
Roadcraft / Re: rear lighting~!
« on: September 11, 2024, 02:10:37 PM »
Updated link in my earlier post.
Or here is a resized photo.

10
Roadcraft / Re: rear lighting~!
« on: September 10, 2024, 02:03:54 PM »
I also put a flashing rear brake light LED bar on all my bikes.
https://photos.app.goo.gl/PPUzwUY3jXgJibd6A
It is not way up high but traffic from behind still see it and slow down and stop long before getting to me.

11
General Discussion / Re: Kymco AK 550 2023 Stolen!!
« on: September 09, 2024, 01:33:46 PM »
Hey Bob,
It was the same round keyless knob. The piano keys are only on the premium which is not available in the US.
I had it locked all the way to the left, as always.

Ben

You are right! I had a minor brain burp for a moment. (Senior moment?). That's still a major bummer to have it stolen.

12
General Discussion / Re: Kymco AK 550 2023 Stolen!!
« on: September 03, 2024, 02:39:06 PM »
Really sorry to hear this. One more reason to make absolutely certain to turn off the ignition knob to the left off position!
Fingers dropping off won't be enough. They need to lose both hands!!

My 2022 model has the round keyless knob which has 2 off positions indicated. The "off" to the right does not really turn off the AK but only shuts off the engine and lights for refueling. The remote fob is not needed when using that position to turn off the engine/lights and the bike can be started by simply turning the knob back to center "on" position. I never leave my AK unattended when I turn it off to the right side of the knob.
The "off" to the left actually does turn off the AK and the remote fob IS needed to turn it on. But I also have verified that if my remote fob is within 48 ft in front of the bike my AK will still sense the fob and turn on. I have a RFID pouch to put my fob into when I want to make sure it cannot be sensed by the bike, like when I am camping.
That's all with MY 2022 model.

The 2023 model has the piano key/buttons. I don't know if there is a similar function with 2 "off" settings where one actually turns it off and the other only shuts off the engine and lights. Still sad to know that it was somehow started and stolen.

13
Technical | How To / Re: Tire size effect speedometer?
« on: August 25, 2024, 01:39:01 PM »
The stock tire is a 100/80-16. The City Grip 2 would be a 120/80-16. Just wondering if the different dimension would impact my speedo reading?

In that case... The speedo will be closer to actual or possibly showing slower than actual with that much of a difference in size.
First number is width in mm at normal inflation and load. Second number is the percent of the first number for height of the tire from the rim/bead. OEM tire size is 100 mm wide by 80 mm tall on one side (100 x 80%). The intended new tire is 120 mm wide by 96 mm tall on one side (120 x 80%).

Tire Sizes explained - RJC Choppers

The difference in height of the tire between those 2 sizes would be 16 mm on one side. A bigger tire = less rotations = less mph indicated per actual speed.


BTW - you CAN modify your original post to correct the OEM tire size you mentioned by clicking on the word "Modify" at the top right of your post.

14
General Discussion / Re: I plugged my tire
« on: August 16, 2024, 01:30:34 PM »
I've plugged a rear tire before with lots of tread remaining. Had no issues with it holding air for the next 6000+ miles until the wear bars were even with the tread. As long as it was a nail that made a clean entry and not a coarse threaded screw you should be fine. I've had a coarse screw go in once and the screw threads cut/shredded the belts in the tire. Only replacement solved that one. A nail is relatively smooth and actually slips between the strands of the belts somewhat making plugging work well.

15
Technical | How To / Re: 2022 Kymco AK550 anti-freeze leak
« on: August 16, 2024, 02:41:58 AM »
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

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