The spark plug should have a 19 mm long thread ,the original plug is a Champion N21 and in NGK that is a B4ES but I've use most 19 mm reach plugs before like a Champion N9YC which is a NGK BP5ES and it will run.Check the length of the thread in the alloy head when you remove the spark plug because sometimes people use the wrong alloy head with the short plug (CJ8)
The 3 cowl nuts commonly are stripped you can use a Helicoil to fix the thread or use a larger thread tap and use 8 mm or 5/16 bolts ,don't cut a fine thread like UNF use UNC threads or 8mm x 1.5mm pitch
The starter cup has the alloy nut as part of the cup ,this can be repaired with a Helicoil.
You will need at least 10 mm of good thread sticking out past the flywheel for the starter cup to tighten down on.
Yes only one bolt to hold the alloy exhaust muffler on ,there should be a metal baffle inside the alloy muffler and the alloy muffler should have a good gasket seal on the engine barrel and a good gasket seal on the mower base, if the gaskets leak or if the metal baffle is damaged or missing the mower will run a lot louder than it should.
To get this mower running you can use a Victa Powertorque air cleaner assembly or most earlier Victa 2 stroke air filter assemblies will work until you can use an original filter .
Originally these mowers had 2 blades but a lot of these mowers don't have the original blade plate fitted so some have used 4 blades.
Blades can be difficult to find ,probably easier to make some Flat Rover blades fit ,you may need to shorten them with a grinder.
