Hi all, I've found out quite a bit of background on the old girl. The restoration is complete, I'll start putting pictures up later today. It drives well too, it'd nearly climb a tree in first gear! hahaha
Anyway, the history.
It appears that this mower is actually a basic version of the "Ariens Emperor", produced in America in the early 1960's. The Ariens model is somewhat more elaborate, with mudguards, a padded seat, and in some cases, a steering wheel instead of tiller steer.
Mobilco, which is an offshoot of the Mobil Oil Company, imported these mowers into Australia and rebranded them as the 'Mobilco Emperor', these mowers were assembled in Melbourne by the Mobilco factory, (hence the reason there is no Ariens model plate), 'Mobile Equipment Industries' in Mitcham, Victoria. The 'Power Farming' Annual of 1965/66 has a listing for these mowers.
Greetings, folks.
Outstanding restoration there, Greg. Very well done and documented.
Well, I'm a bit late to the party here, but can correct some erroneous info, at any rate. Background: My family had a farm/garden machinery business in the '70's and '80's, and were agents for Mobilco, among other firms.
Mobilco had no connection whatsoever with the Mobil Oil Co. The name was a contraction of the earlier 'Mobile Equipment Industries Co' name. I'm not familiar with the early history of the company, but by the 1970's it was a subsidiary of the Pizzey Limited Group. This was a publicly listed company, with operations in paint manufacture, leather manufacture/wholesale, and of course Mobilco.
Mobilco was a:
manufacturer - farm machinery such as grain augers, tractor carryalls , drain delvers, super spreaders, rotary slashers, swing saws, hay bale loaders/stackers; yard/block machines - the Heavycut slashers
assembler - the Emperor ride on and Jet tiller/rotary hoe, both Ariens sourced
importer - Bamfords UK hay machinery [rakes, mowers and balers]; Danuser US post hole diggers; Kohler US and Kubota Japan small engines; Kioritz Echo Japan chain saws etc.; and some earlier saw brands like Canadien, Tas, Mono and Be-Bo.
Most of the imports were rebranded as either 'Mobilco', or in joint names. 'Mobilco Yellow' was the standard paint colour for the machines made or assembled here; red was/is the Ariens colour.
I still have an ex trade-in 1970's Mobilco Echo 601VL chain saw, BTW. Still goes well, though I need to put a carby kit through it, when I get around to it.
Their main factory/warehouse was at the Whitehorse Road address, but they had country and interstate branches as well. We mostly dealt with the Shepparton, Vic branch.
The fact that they were assembled in Melbourne, also explains the use of Whitworth threads throughout the entire machine, engine excluded.
Exactly correct on that one.
The engine, the "JLO", which is actually "ILO", (JLO is a stylised script), was manufactured in Germany in 1965, (engine is date stamped). It is a L197L engine, with a 198cc capacity that produces 7kw, (9.5 hp), at 4000 rpm. It appears that this engine is what was originally fitted to this machine, as the adaptor plate has been professionally made and incorporates additional threaded holes that allow the engine belt guide to be bolted through the punched holes of the chassis into the plate. Another reason that supports this, is that the Ariens drive plate and pully, require a specific design of the crankshaft, which this engine has. My research to date has revealed that Ariens are the only company that provided modified crankshafts for their machines, and modified crankshafts were not produced by the engine manufacturers.
The connection there is that Ariens also made snowmobiles, using ILO engines. The later Mobilco assembled ride-ons had Tecumseh engines, but yours is probably an early model original. Tecumseh also produced 'modified crankshaft' engines for Ariens. I recall having to get a Briggs crankshaft machined to do an engine swap on one of these, after the original Tecumseh put a leg out of bed.
Mobilco changed from assembly to direct import of Ariens machines in the early-mid '70s, due to changes in import tariffs and exchange rates. It became more profitable to do that, and the import machines had a better feature set, and a much greater product range. For example, the higher-end Ariens tillers used a 'special' Tecumseh engine with an auxiliary PTO from an extended camshaft, which gave them power reverse.
The demise of the Pizzey Group came about because the asset value of the company far exceeded its sharemarket capitalisation [i.e. the total value of all of the shares was much less than the assets/properties would fetch]. So it came to pass that an 'asset stripper/corporate raider' bought up a controlling interest in the group in 1976, and it was all shut down and the assets sold off. Happened quite a bit in the '70's.
It was a bloody shame, because Mobilco was a very good company, with great people. I attended a few of the Echo service schools they ran.
There are still some 'Mobilco legacy' companies around though. Heavycut Machinery was formed by Mobilco's sales manager, who bought that part of the production machinery. And Allpower Industries was started up as 'Ariens Echo Australia', by former Mobilco managers. They would all be retired now though. Keith Billing was the last of the old crew.