It is vital that the brakes on your 50cc scooter work optimally, but since they are not a problem for daily driving, they are often overlooked. Here we show you how to bleed the brakes on your 50cc scooter, in five steps (If you have a 125cc scooter, here's how to bleed your brakes):
- Protect your scooter
- Pump the lever
- Attach the 50cc scooter bleed kit
- Purge all air.
- Repeat this process until there is no more air coming out of the bleed nipple.
Step 1: Protect your 50cc scooter:
The brake fluid damages the paint of the 50cc scooter. So wrap a cloth around the bottom of the tank and any other place where the liquid could spill. Prepare water and microfiber cloths, in case anything goes wrong. Clean your scooter, around the tank cap, all banjos and bleed nipples, then place the handlebars in a position such that the tank is as horizontal as possible (be careful not to drop the wheel when the tank is open).
What you will need:
Step 2: Pump the lever of your 50cc scooter:
To change the brake fluid on your 50cc scooter and bleed the system, you must pass all the fluid through the master cylinder, pipes and calipers, and replace it with new fluid. There may be air in the lines, but after you've vented everything and replaced with new fluid, the fluid should be clear.
Remove the reservoir cap if you haven't already, then slowly pump the brake lever - you may see air bubbles appear; keep pumping until you see no more to finish bleeding the master cylinder. You can now replace the fuel tank cap without tightening it.
Step 3: Attach the bleed kit of your 50cc scooter:
Lift the dust cap off the bleed nipple (if it's missing or damaged, be sure to replace it), then place a ring wrench on the nipple, leaving room to open and close it. Then install your clear hose with the other end going into the container, which should contain enough brake fluid to submerge the end of the hose.
It is important to never let the reservoir run dry when bleeding the brakes, and you must pour the liquid into the tank slowly, so as not to introduce air bubbles. At each step, keep an eye on the fluid level - if it drops below the bottom of the tank, you'll have to start over.
Step 4: Purge all the air from your 50cc scooter:
Slowly pump the brake lever four times then hold it down while opening the bleeder nipple - you will see fluid flow through the hose and the lever will light up. Keep pulling it all the way (or pushing it down if it's the rear brake), then close the bleeder nipple when you get to the end of the stroke.
Now slowly release the brake lever.
Step 5: Proceed in the same way until there is no more air coming out of the bleed nipple of your 50cc scooter:
Switch to the other caliper if it is a dual system and do the same, if you have installed new brake lines, it is worth doing both sides twice, to make sure that both lines are completely purged. You might have a hard time getting all the air out, but stick with this method and everything should work out.
If the lever is pulled all the way back with the bleeder nipple closed, there is a lot of air in the system or part of it is trapped. 'is the same principle with the front brake lever), then by cracking the bleed nipple and continuing to depress the pedal - by closing the nipple at the end of the stroke - you can finally succeed in increasing the pressure in the system to be able to purge it properly.
- If you have real problems, it may be useful to remove the caliper and hold it in the air, with the bleed nipple at the top (so that the air tends to rise more); it's probably worth asking someone for help.
-If you have a vacuum pump, you can use it to suck fluid into the system while keeping the master cylinder filled.
What you will need:
Learn more about your scooters:
Here is an article that serves as a guide and helps you choose your scooter better before purchasing. For this, we give you the details on the characteristics and the different types of scooter.
