[charlie]

The attached extracts from B&S workshop manual should help.

Attachments:

1. 

1. BS-ignition1.pdf
2. BS-ignition3.pdf

[charlie]

I use shrinkpic on my pc, not sure if it works on a Mac. This software is free and runs in the background, automatically resizing images when uploading to web or e mail. You should have photo editing software and it probably has an option to save images in a format and file size suitable for the web.The file size is limited for several reasons, upload and download time and storage space on the server.

[charlie]

Another one of the many products made by Allen of Oxford, nice to see something different.

[charlie]

Points gap for Mk25 is 0.012 – 0.016″. Timing is 3/16 BTDC this is measured from top of piston and is easiest if the cylinder head is removed.

[charlie]

The important measurement is the height above and distance from the plough point, one of our ploughmen will know the answer.

[charlie]

It is good practice to slow engine to minimum and watch the shaft on side of gearbox stop. IF it is turning at any speed engaging the clutches will cause damage to them and engaging only one could cause machine to turn, eg engage right hand clutch and it will drive right hand wheel so turn left. Engaging clutch with shaft turning causes damage to the dog clutch. These can be inspected by opening the top of the gearbox by lifting the toolbox. trusty220 is our Trusty expert.

[charlie]

Got my copy in th epost today.

[charlie]

Ohh dear, a sad state of affairs. At least the VHGMC had a vote at their AGM before making the founding members life members a few years ago.

[charlie]

I have just received the ‘spare’copies of The Cultivator which would suggest all the others are in the post and should start to arrive in the next day or two.

[charlie]

It could be that magneto type was different for some countries, a local make being used. This happened with the British Graveley machines which were of Americam origin but had UK magnetos, Wico.

[charlie]

Per, thanks for sharing that information, I was not aware of the different model suffixes and the minor mechanical differences ge carb jets.

[charlie]

April issue is with the printers and should be posted out this week.

[charlie]

If the rings are seized in the piston grooves you can try freeing them off by gently scrapping the carbon away with an old feeler gauge. I did this with a JAP engine on a Gunsmith.

[charlie]

Does it have a Briggs & Stratton engine?

[charlie]

Good news by the look of it, a good clean will confirm this. Whilst you have it apart it will be worth checking the plunger on the oil pump works. The gearbox I stripped recently the plunger was sticking and would not have pumped oil. This is critical as it pumps oil to the worm gear.
Ratchets are unlocked with pin out, see page 11 of manual. A good clean should and oil should free everything off without dismantling completely. Check pawl spring MT215 is not broken.
I am currently making up some control cables for another club member and will be writing an article for The Cultivator covering removal and fitting of same, also how to split gearbox.

[Author]

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