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Choke Knob


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13 minutes ago, JJC said:

After 47 years the choke knob broke. The repro knob doesn’t want to fix itself on. Looks as though the hole isn’t quite right. Any advice on how to get it to fix securely? JJC

Compare where the sprung locating  pin is located in relation to the end of the shaft and then depth check how far the hole is located in on the new knob, you may have to file the hole towards the rear of the knob more to get the pin to engage.

Stuart.

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If you only file it just enough for the button to spring into place then it will be fine.

Stuart.

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Job done. With a mirror and a strong light worked out it wasn’t entirely the hole being in the wrong place. Main problem was the angular hole for the spigot (?) to go in tapered towards the front of the knob. I have a forerunner of the Dremel which has lots of tiny routers. Opening out the taper allowed the spigot (if that’s what it’s called) to go fully in and the locking pin worked. JJC

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