"Unusual weight" on Ebay throttle linkage

[simonbav]

Here's a curious head scratcher:

https://www.ebay.co.uk/itm/326316303776?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=PTRVPjCpQSG&sssrc=4429486&ssuid=Fxm85MKLRNC&var=&widget_ver=artemis&media=COPY

 

[Serious Series]

I wonder is it there as a hand throttle.

[Peter Holden]

That is not the normal hand throttle connection!!

Peter

[Birdsnest55]

Is it to replace that silly spring thing that stopped you putting your boot down, to improve fuel economy.

Paul