Disregard the Terminology. It has been said the lower digit is the option code, but its never been confirmed. I have tried to decifer its correct meaning for ages, but nothing adds up. Its about the only mystery left in regards to these models.
As an example a code of 3 would be 3.6hp engine steel base,rope start....code 4 Would be 3.6 engine,alloy base, 4 holes for Safety guards,edger slot, height adjust.....Something like this.
It refers to mower styles, NOT optioned extras like starter, leaf gaurd, safety toe ring.
But the codes don't always make sense, for eg, an Automatic can have codes of 0 1 2 and 4...So things dont add up.
Anyway its just another piece to the puzzle.
As for options,
Recoil starter,
Leaf guard,
Toe ring.
Safety side skirts for Model 4 std.
As you can see, its not much. With yours being a 4, you can have the groove cover with bolts, cigar tap, spanner, safety skirts(good luck) Recoil starter and leaf guard.
On purchase, you also got fuel tank and funnel, with the spanner being fitted to the mower.
Hope that covers it. Lols
