Topic: Taking off/ Cleaning/inspecting CB350f Carbs for the first time

[Dos]

Hi All,

My bike has a couple small issues like the choke not functioning anymore and the bike only starting with the idle screw all the way in and then rpms go way up and then I have to turn down the screw over time. As well has rpms dipping at idle.

Bike runs great when cruising though!

Anyway, I figured these little things could be fixed with a good cleaning and inspecting making sure nothing is clogged, etc.

Since this is my first time do you guys have any tips or things to take a look at? I know my float heights are not set correctly because the bike reeks of gas.

I would like to reuse the same jets and everything if they aren't damaged since I hear that is best however if they are what kit/gaskets would you recommend?

If I have to get replacement parts would I need to set the bowl height alittle higher/lower since I heard the new parts are different than the old?
 
Thanks!

[Johnny5]

Download the free service manual. Best tip ever. Then Gotta go through the whole carbs but right off the bat, it sounds like clogged pilot jets.

[evinrude7]

toothbrush and few cans carb cleaner.  compressed air if you have it. 

[Dos]

Can I get to the pilot system without removing the carbs and taking them apart?

[BobbyR]

Can I get to the pilot system without removing the carbs and taking them apart?

There are no shortcuts with carbs. Get some carbs cleaner and simple green. Use a strand of copper wire from a lamp cord or a high E guitar string. Rod out everything in the carb and blow out the debris with the cleaner. If the bowls are full of crud fill them with straight Simple Green for 45 minutes or so and then scub what is left with a tooth brush.

[TwoTired]

Can I get to the pilot system without removing the carbs and taking them apart?

Yes.  But, you need a nice selection of tools,  and to work well standing on your head. Being double jointed helps, too.

If you know exactly what to look for, it can be done.  I've done it.  But, only if the carb bowls look pretty clean inside, is it ever worthwhile .

Cheers,

[Dos]

What kit with replacement parts and gaskets should I get?
I know there are good ones and bad ones

[TwoTired]

The Honda kit will have all the soft parts you need.

[Dos]

Cool thank you

[Dos]

Should I order new brass jets or clean and reuse the ones in there?

[TwoTired]

I reuse the stock metal parts if they haven't been altered by mechanics or corrosion .
Aftermarket carb parts often differ dimensionally when compared to originals.  This makes carb fine tuning a challenge.

[greenjeans]

I reuse the stock metal parts if they haven't been altered by mechanics or corrosion .
Aftermarket carb parts often differ dimensionally when compared to originals.  This makes carb fine tuning a challenge.

+2

[flybox1]

Any 'soft parts' carb kits are fine...like the bowl gasket, coffin top paper gasket, main jet o-ring.  That's really about all you'll need.
Be wary of ROUND bowl o-rings.  They suck at staying put.
Purchase the 5 sided ones that are shaped to fit your bowl, and are made out of VITON.  Anything less and you will be disappointed.

Reuse the main and pilot jet.  Be sure to slide out the emulsion tube.  Its hiding under the main jet on each carb.
It'll have many perforations.  Diligently clean them all.  Even the thru-hole.
Verify you have #35 pilot and #75 main jets.
Floats should all be set at 21mm, unless you install a new float valve and seat.  This will require the clear tube test to ensure proper fuel level in the bowls.  However, its a good test to do anyway while your carbs are off the bike.
Spray through all holes with carb cleaner and then reassemble.

[Dos]

I got this guide from Justin on do the ton.

I figured it would be a good idea to share it with anyone else.