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Yamaha Star 650 Carburetor Remove Clean Rebuild Reinstall Sync - Part 1 of 2

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Retro Tech & Electronics

In a previous video I discussed the possibility of cleaning the jets on this bike without removing the carb in certain conditions where they get plugged due to ethanol. In most cases there are issues where the carbs must be removed for a complete breakdown and rebuild. This video begins with the removal of components from the bike required to remove the carbs from the bike. This also includes the emptying of the take of any remaining gasoline into a canister.

Basically with the removal of the gas tank, the carb is exposed to work can begin in and around the carb to detach components from it. This includes the air filter assembly , hoses and airbox. The choke and throttle cables, electrical connections, and fuelline.

Loosening the carb off of the manifold is all that is required to unseal them by gently rocking them and then pulling up. They can be lifted up and out of the bike. The manifold ports and inspected and then stuffed with clean paper towels to stop contamination.

With this the carbs are moved to the cleaning table for inspection and its already apparent that one slide is binding. The separation of the carb begins by removing the brackets. Working on one carb at a time, complete disassembly is accomplished, each part is inspected for damage and dirt.

*NOTE as I was working on AC this week I referred to the Emulsion tube as an Orifice tube**

On this carb there was a definite corruption on the lower end, which will require a more intense cleaning. With everything stripped, the cleaning begins, one piece at a time the O ring had to be replaced on the bowl for the solenoid. It was solid.

Every passage was cleaned out and checked for flow with carb cleaner. When it was shown to be clean and flowing good, it was all blown out on the compressor, after which, assembly will begin as demonstrated.

A test is done to ensure air tight integrity of the float bowl needle seal.

The second carb, reassembly and testing continues in the second video.

posted by modellare4n