Hi Drew,
Well haven't you got a challenge in front of you ?
Missing tooth, broken Chassis side and a lever guide that's been mucked around with as it shouldn't have that "V" cut into it.
The only way you are going to secure parts for your machine is at the death of another machine, yes this is most certainly a sad situation but rest assured there are still quite a large number of "Supercuts" out there rotting away quietly in old sheds just waiting to be found. It's probably even better if you found a harshly neglected machine that's been left out in the weather and is good for nothing more than being an organ donor to your machine. That's what I did for mine. $50 and endless parts for my good one. There are absolutely no new components available what so ever.
But please don't let this discourage you as we need more people to refurbish these superb examples of Australia's mowing Heritage
Changing the subject to your reel, it's almost finished with no meat left on the blades to machine, also I note that this one has the anti-clockwise engine on it as the norm for petrol powered Model 17's is that they have the Villiers with a chain drive on it and not a single V belt set up on them. Even the electrics used a Dual V Belt drive set up, so this leaves me to believe that someone has changed a few bits and pieces on it, but I may be wrong as Model 17's were one of the most adaptable machines and were made in so many different configurations to comply with the purchasers requirements. As far as we know there were about 32 variants of the Supercut. The mind boggles doesn't it ?
Cheers,
BB.