Tomos A3 Carb Cleaning (Encarwi)
From MopedWiki
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How to Clean the Encarwi Carburetor on a Tomos A3 Bullet
What you will need:
- Can of Carb, Brake, or Parts cleaner ($5.00 at local auto or hardware store)
- Assortment of Metric Wrenches (10mm and 13mm used on this particular bike)
- Flat Head Screw Driver (small)
- Tin or Container to clean parts in
*Note* You will be doing 95% of the work on the right hand side of the bike (side with the petcock) so set up shop accordingly.
Getting started
This is a Dirty Encarwi Carburetor. It came off of a 1978 Tomos Bullet A3.
First, turn off fuel flow to carb.
This can be done by switching the petcock to the closed position (illustrated below)
Unplug the spark plug boot from the spark plug.
Remove the fuel line from the petcock and the carb.
Be sure to drain any excess gas into a separate container. *Note the position and flow of the fuel filter*
Losen the screw holding the carb to the intake cylinder circled in the picture below:
Unscrew the air filter clamp from the carb.
Remove the TOP 2 screws that hold the engine to the frame, as shown below:
Be sure NOT to strip the bolts when removing them. You will have to hold up the engine to relieve pressure on the bolts while removing them.
The carb should come away from the airbox when the engine tilts. If not, you will need to apply a flat blade screw driver while supporting the engine up, as this is the last bit of resistance holding the engine from tilting down due to gravity.</br>
Lower the engine a few inches. It should tilt down towards the ground. You need to be careful since the wires that run to the engine/magnito are still connected on the other side of the moped as well as the throttle cable to the carb. It is easy to not see this and pull the wires out like I did, in which case the engine hits the ground hard and you need to re-solder the electrical on the moped.
- You are now ready to take the carb off the frame.
Removing the carb
Rotate the carb towards you while twisting the carb. It should come out with little resistance.
Using a pair of pliers, or vice grips unscrew the black plastic throttle top which the throttle cable fits into.
Careful it might pop off since it is pushing down a spring and a flow control piston. Pull it all out.
Remove the cap that went inside the air filter.
More to come tomorrow with pictures