IDK. But I carry what I think I could need for day-long trips: (1) Small pliers to tighten priming valves should one loosen and to loosen the knurled screw valve on my sump level check brass bleeder; (2) spare sparker (had one Champion fail but now use NGK so maybe now less likely) and plug wrench; (3) brass brush to clean deposits off plug electrodes; (4) can of starting ether in case of some kind of trouble starting not foreseeable now.