How to Install & Remove Your Amal Carburetor Throttle Cable
This DIY Tech Tip by Lowbrow Customs shows you how easy it is to remove or install your Amal Carburetor throttle cable, commonly found on British motorcycles such as Triumph, BSA and Nortons. This is a simple operation but one that is of confusion to many new British motorcycle owners.
Here are steps by steps to show you how it done:
- Step1: Undo the either Phillips or Allen-head screws that are holding the cover on the carburetor.
- Step 2: Once you pull the springer out of the way, you can go ahead and pull your needle and clip out of the side. Then you simply push the cable, slide that little ferrule over to the notch and pull straight out.
- Step 3: Before you lock the spring go, take your needle with the clip in the position you want and go ahead and drop that in the other hole there and when you let the spring go there that will go ahead and hold that clip down into position.
- Step 4: Put your slide back in, you just keep an eye, make sure you see the notch on the body of the carburetor and the adjusting little tab here on the slide. Then slide that in there and you want to take a look down there to make sure that the needle is going right into the jet down there and that it's not cocked off to the side or not to clip off the mule.
That's all that is to it, put the cap back on and you are ready to go.
You can watch full tutorial in the following video:
How to Make Your Throttle Cable Fit Amal Carburetor
This is a simple piece of advice but can be helpful. Most new throttle cables you can get for your British motorcycle have cable stops that are too large to fit in the adjuster that is found on the top of the Amal carburetor. There is a simple fix shown here that will keep you from having
loose cables flopping around where they meet the carbs. Also, being that there are often adjusters at the throttle assembly as well as having an inline adjuster, a 3rd one at the carb is quite unnecessary, and you can do without one.
Measure the end of your throttle cable, they are typically just under a quarter inch, so a 1/4" drill bit should work great.
Remove the top of your Amal carb and clamp it in a vise. Notice the aluminum angle pieces in the jaws of my vice to keep from marring soft metal. Use a bit of cutting oil and drill half way through the threads in the cap. Don't drill all the way through or you will not have a lip left for your cable stop to rest at.
Here is the carb top reinstalled with the throttle cable now nestled snug.