I have had many people wanting an easier method of connecting a throttle linkage to the WJ71 Walbro carb so your problems have been resolved. Parts are top notch and machined right here in the USA by one of the best.
This arm will retain factory throttle/choke release but I recommend removing throttle stop/idle set.
Pin from arm goes into small hole on carb stock arm.
Threaded nut goes into backside of stock carb arm and is attached with supplied screwed.
2 open threaded connections are for ball link attachment, you pick which one works best for you.
Price will be $12 plus shipping for the arm kit.
Thanks Guys, I hope this makes it alittle easier for you installing your JC120. If you need an easier choke setup I suggest using Spot on Choke Arms.
Install pics Below.