Hi all, I have no spark at the spark plug. 1....got new spark plug 5798 br2 lm hope this is the correct one set to gap to 20 still no spark 2....fitted new ht lead still no spark 3....how do you test the ignition coil 4...if faulty where to get one from and is there different types 5....Is the coil ...

Hi Anyone know how to setup this carb on my suffolk punch17ins 43?

https://www.ebay.co.uk/itm/394004390031 ... SweipiPuPo

I have fitted it all okay BUT it runs very bad, I think it is due to the jet settings

Many thanks

Hi All

Well to go on from my last post about the 43 mower

I have now got this Carburettor
https://www.ebay.co.uk/itm/314579360716

In place of the old one.
Does anyone know how to set this carb up ?

IE the valvev under the petrol cup also the other ones

Mnay thank to all

I never saw the adverts for adjustable needles again. Anyway, had a bit of a Google last night and found this, https://www.dellorto.co.uk/shop/dellorto-industrial-carburettors/fhc-fhcd-parts/53064-dellorto-fhc-variable-main-jet-kit/ seems extraodinarily expensive when you can get a whole carb for u...

If that is a Briggs and Stratton engine, a lot of folk back in the day removed the engine and replaced it with a Honda one, the Punch is a superb mower, but depending on how much work it has done, the engine might be better replaced with an easy start more modern engine. If you want to fix the orig...

That is the governor linkage and must not be altered unless you know exactly what you are doing. the linkage goes via rods to a lever on top of the carb. If changing carbs, you unhook the rod from that top lever as you remove the carb, and hook the new carb onto the rod as you fit it. Some carbs ha...

That is the governor linkage and must not be altered unless you know exactly what you are doing. the linkage goes via rods to a lever on top of the carb. If changing carbs, you unhook the rod from that top lever as you remove the carb, and hook the new carb onto the rod as you fit it. Some carbs ha...

The plunger with spring under the float bowl is to drain fuel from the bowl. Water finds the lowest point and this provided an easy way to remove it. Those Chinese carbs may, or may not be an easy fit. I often find with "Chinese knock offs" they don't get them exactly right, and some alte...

That is the fixed jet. As I wrote earlier it looks just like a brass bolt head but if you unscrew it you will find the jet passageway from the side, inside the float bowl, up the centre of the brass "bolt" and into the carb venturi. Just at the moment someone in China has got the idea of ...

The fixed main jet looks like a hexagonal brass bolt head and holds the float bowl in place as well as having the jet passageway through it, screw in until tight. The adjustable jet has a brass needle screwed into a similar brass bolt holding the bowl on. So you adjust the needle by screwing it out...

Hi Richard Thank you for getting back to me. I'm a bit confused about two things 1......the " fixed main jet under the float " Should this be screwed all the way in ? and never adjusted? 2......Clive wrote about it and that you could get adjustable main jets to retro fit what is his all ab...

Does NO ONE know about this then?

Hi, Lawn mower Qualcast Suffolk Punch 43s Problem: Full choke on throttle full on Pull to start,starts then have to switch from full choke to half choke back and forth befor it runs okay Then runs all okay BUT have to keep it on 3 quarter throttle. NEST PROBLEM If after say 20 minutes I stop it to m...

Hello Stan, I have just checked some old Qualcast paperwork and it was 26 years ago that the mower world was battling with troublesome Dellorto/Qualcast/Atco. I have sent a private message (pm) regarding your question....apologies for my slow reply...I was waiting for a few quiet minutes on Saturda...