[wristpin]

If you look just to the right of the inspection port there are the words “ set points” with a raised boss with nothing on it but just to the right of that boss you will possibly see a very lightly stamped 18thou.
Your previous images are now opening as they should with no change of settings!!

[wristpin]

I’ve not been able to view any of the OP’s images on the iPad – suspect that they may be a higher resolution than the system likes but to enlarge on the magneto types –
The original had a separate coil, condenser and points. The intermediate had the condenser incorporated within the coil but still had points. The final version was fully electronic with just an electronic coil / module and nothing else. It should be noted that the electronic system had a specific flywheel.
As far as points gap goes , I’ve never seen anything other than 18” thou.

[wristpin]

F15 governor etc

Attachments:

1. 
2. 

[wristpin]

May be worth trying Chester Hudson.

[wristpin]

Sadly, around here, those “ pull ins” are likely to be full of household rubbish . A couple of years back one by-way on the Marsh was completely closed by multiple Transit sized tips of builders rubble and discarded bathroom furniture etc. Then there are the burnt out cars with the matching length of incinerated hedgerow and melted tarmac.

[wristpin]

Follows and Bates who are best known for making lawnmowers, also made an orange slicer for marmalade making.

[wristpin]

The company name was Howard Rotavator Co Ltd, and Rotavator was trade marked. At one time Howard used the slogan “ if it doesn’t read the same backwards as forwards, it’s not a Rotavator” . They also used a mirror image of the slogan.
With the demise of the Howard company and manufacturing rights passing to Dowdswell, the trade mark also went there .
What is interesting is that I have Howard literature going back to the late 50s and there is no mention of Rotavator being a trade mark on it. Less litigious times in those days perhaps. Unlike my first employer, the Caterpillar Tractor Co. who went to great lengths rap the knuckles of any unfortunate journalist who used caterpillar ( lower case c) in a generic manner to describe a crawler or track laying vehicle.
As far as rotovator goes, I guess that it either developed as an error, or from more switched on writers wishing to describe rotary tillers without impinging Howard’s trade mark. Howard themselves used the by line “ The world’s largest manufacturers of rotary tillage equipment”

[wristpin]

I believe it is the longest single word palindrome in English

Could also be the most misused word!

[wristpin]

Welcome to the Club and forum.
Just a suggestion, there are possibly others like me who don’t know what engine is fitted to your machine but would know the correct mixture if they knew what engine you have . There may have been a choice when new or it may have had an engine change at some time in its life.
As ever, an image or two will assist.

[wristpin]

This is the best that I can find. Despite it showing a fixed engine, cable operated machine on the first page, the rest is sliding engine.

https://www.dropbox.com/s/ea4zkfv4wfcogqm/Mountfield%20M1%20Cultivator0001.pdf?dl=0

https://www.dropbox.com/s/dcgbi3frr4honkm/Mountfield%20Cultivator%20Belts0002.pdf?dl=0

[wristpin]

Your eng8ne numbers suggest a 1975 machine. I’ve probably got a parts manual for it but an image of the whole machine will be useful before I spend time scanning it as there were two versions. On the early machines a lever slid the engine to engage the drive while on the later ones the engine was fixed and the drive was engaged by a cable operated jockey pulley.

[wristpin]

Vintage spec oils for vintage engines – particularly if they have plain bushed bearings.
Millers do a Classic two stroke mixing oil and Morris Lubricants do straight SAE 30 and 40 non detergent oil that is fine as a mixer.

[wristpin]

Did Opperman make their own axle or borrow it or components from a more mass produced vehicle ?

[wristpin]

The distortion of your images doesn’t help but basically it’s an Atco Standard which was a badge engineered Suffolk sold at a higher price to traditional Atco users and give an increased value product to the specialist mower trade while the Sheds were jobbing out the Suffolks in boxes. There was also a De Luxe version with folding handlebars and a different fuel tank. The shape of the fuel tank on yours goes right back to the Qualcast Commodore of the 1950s / 60s.

[wristpin]

Remove the plug cap / connector and hold the plug lead quarter of an inch from a bare metal surface while briskly rotating the engine. If a spark jumps that gap, the coil, points and condenser are fine and your issue is with the plug or connector.

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