Any one know where i can source suffolk punch parts.

Available on eBay

https://www.google.com/search?q=Suffolk+Punch+14S+drain+valve

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https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&cad=rja&uact=8&ved=2ahUKEwiMk9P78PL-AhUyOn0KHX7HArMQtwJ6BAgOEAI&url=https%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DztvPuIm469Q&usg=AOvVaw2qQT3zpfLlrFK_2ltsW6Ko

Is this it?

https://www.google.com/search?q=height+adjustment+knob+for+an+old+Suffolk+punch+17s&

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Sounds like the carbourettor may be clogged with grass dust.
Remove the carbourettor and clean it out.

Geoff, Check the attached links, manual,instruction and guides, Good luck
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http://www.oldlawnmowerclub.co.uk/sites/default/files/opmanual/Suffolk%20Punch.pdf
Suffolk Punch OWNERS MANUAL
Small engine repair How to drain and change the oil in small petrol engine

Hi Keith,

You can find spares here:

http://www.espares.co.uk/search/lawnmowers/suffolk-punch/p/1116/2173

If you google suffolk + punch + spares you should be able to find more websites which supply blades.

Hope this helps!

the float needle must be so the pointy end is pointing up into the carb and the other in the bowl

Hi howardandjan, You call it "old Qualcast punch" if it's called Qualcast punch it's not that old, it was originally called Suffolk punch (after the horse) and came in 14" and 17" cuts, the 30s (30cm approx 12") was originally called suffolk colt. when Qualcast took over just about all the british cylinder mowers Atco,suffolk,webb etc they started swapping names about but you should be able to get parts from any good mower shop try winchester garden machinery in hampshire always found them helpful

Have you checked with the company that makes the mower for the manual? Hae you tried searching the internet to see if you find the manual there?