New Cover ACV (Auto Cut Valve)

After changing the rear cushion, I continue to replace the carburetor ACV (Auto Cut Valve) Cover. So it will give a better fuel consumption, because no air leakage from the ACV.

ACV function is to cut of fuel pump pressure based on intake manifold vacuum pressure.

First, remove all screw that hold the carburetor. There are two screw, one on intake manifold and one on Case Assy Air/C.

Now you can see the Cover Assy clearly as the picture below.

As you can see, there is a gap on top of the cover that make the ACV didn't work properly.

Release the hose, and remove two screw with screwdriver. Then prepare the new Cover ACV.

Replace with the brand new Cover ACV and tighten it with a screwdriver. And plug the hose.

Check for any leakage from the cover.

Put everything together, and test it.

Before I replace the cover, the scooter fuel consumption only 1:32 kpl.
After it replaced, the new fuel consumption is 1:36 kpl.

New Rear Cushion

Sunday, June 24, 2012, I decided to replace my scooter rear cushion. It's been 5 years and 100K kilometer already. The tools needed to replace the cushion is:
- 10" socket
- 12" wrench
- 14" wrench
- Screwdriver (+)
- Hammer

First thing you have to remove the bolt and screw that hold the baggage with 10" socket and a screwdriver. After you remove the baggage, you will see your cushion.

Using 14" wrench and a hammer, you can untight the bolt with a method like this: (but don't remove the bolt, just untighten it a little)

Now you go to the bottom cushion, and remove the bolt with 12" wrench. Then you can remove the top bolt after you remove the bottom bolt.

Here is some picture of the cushion:

Now replace it with the brand new cushion with a backward method.

Don't forget to adjust the spring level to the setting you desire with a screwdriver. Just plug the screwdriver to the hole and push it. I choose the hardest level.