Hi tezza98_tnharris, and a big warm welcome to the forum. It is always nice to see another Scott Bonnar enthusiast about to commence a restoration, and we're here to help in any way we can. We're looking forward to seeing your pics, which would allow us to identify your model exactly.
Basically you're right Tezz, your machine fits into the Scott Bonnar (SB) lineage after the Bonmow (1953) and after the Model 45 (1968) and is actually part of the later Model 45 line-up was probably manufactured in the period late 1974 and I presume that it would have a 3 HP Briggs and Stratton fitted.
Regarding your questions, I will try and answer them in turn; Turf Machinery Services have closed down, Keith Lewis, the proprietor, is at present looking for new premises as his last building was sold out from under him, and the site is being re-developed. All his stock is now in storage. He has given no time frame as to when he will be up and running again.
Our
On-line Store here at Outdoorking is now the place to purchase any parts you may need.
As to the sharpening of the cylinder reel Tezz, I hate to burst your bubble, but there is no way you can sharpen a cylinder reel by hand. The reason for this is in the design of the reel itself...the blades are not straight; it is a helix spiral and therefore has to be ground in a lathe whilst it is spinning at a precise RPM, and the grindstone, also spinning, has a perfectly flat face and is introduced to it.
The bottom knife blade which has to be
perfectly flat, has to be ground, then the front edge is ground to ensure a perfect edge. This ensures
perfect alignment with one to the other. This
cannot be done by hand. The machinist I use here in Wagga charges me $70 and in my book is money well spent. It is also at that time, razor sharp.
In order to find an engineering workshop that can do this for you, contact your local Bowling Club, and find out who does their cylinder reels.
When replaced on the mower (assuming the reel bearings are in perfect condition) the resulting adjustment is relatively easy, (though a bit tricky at first). The reel should spin quite freely by hand, and has very slight clearance (minimal) between the cylinder reel and bed-knife blade
Regarding Spare Parts and Owners Manual for your machine, they can be accessed in the Lawnmower Parts lists and Manuals topic located at the bottom of Questions on Lawnmowers and Engines forum.
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There are other members presently restoring Scott Bonnars, such as deviosi, you might like to check out his posts, and my Scotty restored pics are in the Old Mower Pictures topic in the thread "Scott Bonnar Restored"
Tezz, once again