Keep us posted on the outcome.  I can see your metal tab is bent outwards giving this a slight bend in a clockwise direction should remedy this. 

Thanks Mick, I'll go back and have a play to get it to hackle right.

@openspaceman The linkage is all there and looks fine.  I can't see from the image if anything else is bent because of the tight image crop. If you could attach another image showing a bit more of the linkage it would help.

But basically that metal tab just to the right of the choke shaft should catch on the edge of the opening and flip the choke shaft on / off. It could be that the linkage is hitting the rest of the bracket before the tab reaches the shaft, (tab is bent too far back) or the shaft is stiff.

Edit:  Just had a quick search on Youtube to see if anyone had posted a video, found this one which shows exactly what I was saying. https://youtu.be/USx5IMxLiBQ?si=dR__Oz7Xjn3NhOxx

Hi Mick, it has been a while again. I have a similar picture of a B&S carburetor linkage but can't see how the choke works, is it applied by the throttle cable position and the various bit of linkage knock it off when the throttle is opened or is a plastic choke control missing from the centre of the choke butterfly I have marked in bright red?


The mower is a Masport 950, the lady could not start it but as soon as I flipped the choke butterfly on its over-centre spring arrangement it fired immediately but I had to flip it over-centre the opposite way to open the choke. I just wonder if a choke control lever is missing.

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I think I could have done with the tools 😬

Once I've got the Motorstop assembly ordered I should be able to connect it all back together.  It's been a steep learning curve.

No problem.   

When fitting, You'll just need to connect the gearbox end first, by hooking to the small lever on the box, then clip the cable in place where that old piece was. Then hook it up to the lever on the handles and clip the cable in place. 

There is tools available to unclip those cable ends from the gearbox etc., but I made my own custom ones from a piece of metal tube with a slot down the side.

Many thanks for the reply.  I've been racking my brains all day and this makes perfect sense. I managed to get this out but inadvertently damaged the other end when removing it from the starter bracket (what a plonker).  Now I need to buy this.   However, thanks for the reply, it's really appreciated.

Hi Johnd1881, and welcome to TGMForum.

The black piece you see on your gearbox is actually the end off the old cable.  You need to remove it before snapping in the new one. 

You should see a similar black plastic piece on the new cable, and you'll notice two plastic tabs which need squeezing to release it from the gearbox. 

Hope this helps.