Episode 4: Cleaning Carburetors

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Episode 4: Cleaning Carburetors

¬†Hey! Welcome to Episode 4 of Motorbike Mondays. This show is all about cleaning carburetors. If you’re new to bikes, or just picked up a bike new to you, you’re going to have to learn to clean carbs. Hopefully this show will guide you through it. There’s alot to it, but it’s also no that complicated. Listen to the whole show and I bet you’ll be ready to rock!

Here’s our pre-show notes to walk you through our discussion:

Tools Needed:

Philips and flat-head screwdriver

Socket or wrench set

Wire brush

Jet cleaner tools

Compressed air

Carb rebuild kit (optional)


-Stage 1


Shut off petcock and drain float bowls


Remove carb(s) from bike


Prep work surface


Remove float bowl


Remove jets, mixture screw, float, float needle, and float needle seat


Soak brass in carb cleaner – no rubber


Remove slide cover


CV style

Remove slide and clean needle

and adjust or replace if needed

Check rubber diaphragm for cracks/tears

Clean slide and cylinder walls on carb body. make sure it slide freely


Slide style

Remove slide – by bolt or unscrewing cap with throttle cable


clean slide and cylinder wall on carb body. make sure it slides freely


-Cleaning jets


Remove jets from carb cleaner


Spray carb cleaner through jets and blow out with mouth or preferably compressed air


Check if you can clearly see through jet opening


If still not clear use jet cleaning tool to clean out junk


Spray more carb cleaner and check if clear


Do this for each jet and jet holder/emulsion tube. Make sure any holes on the sides are clean as well


Clean off float, float needle, float seat, checking for excess wear and make sure its seats properly


-Cleaning ports on carb body


Go through every port/hole on the carb body and make sure it has good flow with no blockage


Blow compressed air through each port/hole


-Stage 2


If carbs are heavily varnished, soak in cleaner


Chem-Dip- make sure no rubber is on while soaking


Pine-sol – remove all brass or go back and remove residue

Wash with hot water after soak


Blow compressed air over everything including ports/holes



  1. Anthony vasconcellos

    I have been listening to your podcasts the last couple of weeks and so far have really enjoyed them, looking forward to next monday. I have a question: what is the website you found that has the ability to find what bikes a specific part was used. This info would be awesome. Anyways keep up the good work. I am working on a 1969 cd175, next project is a cl350 with a blown piston.

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