what Puky was thinking, with his go-carts / "Kettcars" such dam ... Eiden valves installed so that you need a separate pump for only as customers rip off (financially) or "Satisfied customers are our care" setting called ... (I would / will definitely not Puky Kettcar / go-cart buy more thanks to this bad design!), but only at the margins.
But I have an alternative, both found ordered by Prime: 7 For this Ballpumpe:
www.Amazon.com/ERIMA-Luftpumpe-20-Zoll-schwarz/dp/B000J0YZ52/ref=cm_rdp_product
For 3.20, these valves essays:
Of these, the Silver comes to the pump with the hose and so you can (still with a lot (!) Nervigem fumbling, but that will not be with the Puky otherwise) actually inflate the PUKY Go-Cart.
Since the pump is Erima but actually a ball pump, one has therefore also of course still the / a ball pump by this purchase and through the three mounting cups even a bicycle air pump for the three known types of bicycle valves me.
For convenient 10,20 is a so so an all-in-one pump available (PS: the Football needle is stowed in the handle, the three valves can be screwed into each other every three screws on the hose the Erimapumpe, so there's nothing lost) , also has also saved money compared to Puky (after all, just over 20%) and Puky has not even thrown for this mischief of customer unfriendly valve attachment money in the throat.
I hope I could give you a helpful hint hereby.