It’s all just a front
March 16, 2009 – 10:24 pm | One Comment

With the steering column now separate from the bike, it was time to pay attention to the front end.

Read the full story »
1. The Story

So, how did this all come about, how did I end up with a Vespa.

2. The Dismantle

Tales of taking it apart and dismantling the bike.

3. The Bodywork

Making the bike look all shiny again.

4. The Engine

Making the bike run and perform like new… hopefully.

5. The Rebuild

The best part of any project, new shiny bits

Home » 2. The Dismantle, 4. The Engine

Carb Rebuild

Submitted by JD on March 15, 2009 – 11:13 pm2 Comments
The Carb

 

The Carb

I decided that as the “clever” bit of the engine, the carburator would probably be in need of some TLC and a good clean up and so made the decision to embark on stripping down as much as possible and thoroughly going through each bit.

Carefully taking the carb apart, I laid each piece out on the bench in their respective places, to ensure that I didnt get confused as to which screw / jet went where, and ended up taking a picture to use as reference when re-assembling.  Using an old tupperware box I placed the body, jets and screws in and gave them all a good blast with carb cleaner – which I have to say does an amazing job, even tho it is pretty toxic (I managed to get a splash of it near my eye and could feel it eating away at my face).

Taking a look inside the fuel filter bowl, I could see it was pretty clogged up with all sorts of crap – I guess the filter was really doing its job!  Taking a small flat screwdriver I dug the gunk out and gave it a blast with the cleaner, and it came up spotless.

Fuel filter crud

Fuel filter crud

I pretty much used an entire aerosol on the carb and ensure that everything was as clean as a whistle.  Although I dont have the replacement gasket kit yet (I am making a list of parts I need to order in large chunks), I rebuilt the carb with ease using my previous photo for reference, and it now sits ready for its gaskets replacing.

Now because of the strip down, I dare say there is going to be a period of tinkering when the bike first gets started, as all the mixture screws have now been changed so I am hoping to find a little guidance on the best setup and where to start (quarter of a turn here, 1 full turn there)

Maybe you can help?

The carb in its "exploded" view

The carb in its "exploded" view

2 Comments »

  • BrynO says:

    Carb is simple to set up, mix screw 1 & 1/2 turns out as the starting point and turn a little each way until it idles nice and smooth, then adjust the tickover down.. check the float needle valve has a red rubber on the end (unleaded friendly) and not the OE black one, check the float doesn’t have fuel in it, new gaskets, done!

  • JD says:

    thanks for the info!! – i’ll be sure to refer to your instructions when it gets to the rebuild and the initial starting up of the motor. If I get any probs, i’ll drop you a line.

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