How to disassemble the upper carbs on a Honda CB250N Super Dream

We start with disassembling the upper part of the Honda CB250N carburetors because it’s preferably to have the open top upside down on a bench when working on the bottom than vice-versa; you don’t want to accidentally break off a float post because you were leaning too heavily on the bolts on the top! We are interested in removing the caps from the top:

Here's how to disassemble the upper part of the Honda CB250 N Super Dream Keihin VB30B carburetors, as shown on MotoFaction.org.

Each is held in by two bolts with washers – 5x16mm (part number 93500-050160H) with a 5mm spring washer (part number 94111-05800 – eBay US<, eBay UK<, eBay AU);

Here's how to disassemble the upper part of the Honda CB250 N Super Dream Keihin VB30B carburetors, as shown on MotoFaction.org.

A good Phillips #2 should suffice to remove them. Be aware that there is a spring underneath, though it isn’t under a lot of tension – best to keep a little bit of pressure on the cap when you undo the second screw just in case:

Here's how to disassemble the upper part of the Honda CB250 N Super Dream Keihin VB30B carburetors, as shown on MotoFaction.org.

Bolts removed:

Here's how to disassemble the upper part of the Honda CB250 N Super Dream Keihin VB30B carburetors, as shown on MotoFaction.org.

Cap lifted:

Here's how to disassemble the upper part of the Honda CB250 N Super Dream Keihin VB30B carburetors, as shown on MotoFaction.org.

Cap and spring removed:

Here's how to disassemble the upper part of the Honda CB250 N Super Dream Keihin VB30B carburetors, as shown on MotoFaction.org.

Now we can see the top of the slide piston:

Here's how to disassemble the upper part of the Honda CB250 N Super Dream Keihin VB30B carburetors, as shown on MotoFaction.org.

This should simply slide free:

Here's how to disassemble the upper part of the Honda CB250 N Super Dream Keihin VB30B carburetors, as shown on MotoFaction.org.

Now you should see this:

Here's how to disassemble the upper part of the Honda CB250 N Super Dream Keihin VB30B carburetors, as shown on MotoFaction.org.

Continued in part two.

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