Yes the old Victas from the UK look great Alan.
With the V37 this is what I would do,other people may have some other ideas as well.
I would make sure the spark timing is correct if it has not already been checked , when cleaning a carby I usually
push a length of fuse wire from the house fuse box into the main jet in the carby just to clear any blockage
because compressed air will not always dislodge a blocked jet. If I want to check that the starting problem is fuel related
I remove the air filter and spray start ya bastard into the air intake and if the motor will run for 10 seconds when
spraying the starter fluid it's most likely a fuel supply problem.
click here for link starter fluid exampleIf I have problems starting a mower especially with the wind up starters I use a drill to start the engine or bolt a later
zip starter on.
Cheers Max.