Kymco Agility 50 - Service manual > Auto bystarter inspection

Check the auto bystarter valve and needle for nicks, wear or damage.

If any faulty part is found, replace the auto bystarter as a set.

INSTALLATION

Insert the auto bystarter into the carburetor body until it bottoms.

Position the set plate into the groove in the auto bystarter and tighten the screws.

• Be sure to install the auto bystarter and set plate properly.
• Install the set plate with its bottom face facing down.

AIR CUT-OFF VALVE

DISASSEMBLY

Remove the two screws attaching the throttle cable set plate and the set plate.

Remove the two screws attaching the air cut-off valve.

Remove the spring and vacuum diaphragm.

Check the vacuum diaphragm for cracks or damage and check each passage for clogging.

ASSEMBLY

Install the vacuum diaphragm onto the carburetor.

Install the spring and air cut-off valve cover.

Install the throttle cable set plate and tighten the two screws.

• Be sure to set the vacuum diaphragm lip into the groove on the carburetor.
• When installing the air cut-off valve cover, make sure that the vacuum diaphragm is properly installed.

VACUUM CHAMBER

DISASSEMBLY

Remove the two vacuum chamber cover screws and the cover.

Remove the spring and vacuum diaphragm/ piston.

Remove the needle holder and jet needle.

Be careful not to damage the vacuum diaphragm.

INSPECTION

Inspect the needle for stepped wear.

Inspect the vacuum piston for wear or damage.

Inspect the diaphragm for deterioration and tears.

ASSEMBLY

Install the vacuum piston/diaphragm in the carburetor body.

Install the spring and then install the vacuum chamber cover.

Tighten the two screws.

• Be careful not to damage the diaphragm.
• Hold the vacuum piston while tightening the vacuum chamber cover.

See also: