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Google is thankfully incredibly good at indexing the VHGMC stuff.Google is thankfully incredibly good at indexing the VHGMC stuff.

That I understand but it only works if the searched for word is in the Topic title and not the content. In my case the original poster did not know what he had, so the words Sothert and Pitt and Vibroll did not appear in the original Topic but were included in one of the reply contents – hence no hit on either a VHGMC search nor a Google search.
Just to prove the point, the original Topic was “Ancient vibrating roller with Villiers engine” and any of those words on the end of a Google search would have found it – but of course I had no memory of the original Topic title – just the reply.

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If your engine has a low oil level ignition cut out safety system it may be playing up – or you may need to top up the sump!!

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Thanks for the Google searching tip. I’ve given it a try but it too seems to only work on the topic heading rather than content so I’m guessing that the Forum’s search box is actually a quick link to a Google search ?

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Thanks for all the replies. I didn’t realise that the search was only confined to the post title and did not include the content. I inherited the manual in 1979 when the original Godfreys of Brenchly (Kent) closed down together with two car loads of parts books and manuals that were about to be skipped. Not so relevant now that so much info is available on the net but a godsend at the time.

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Also , thoroughly check your inlet manifold gasket.

Good point.but don’t stop with the gasket, put a straight edge across the flange – they are quite prone to bowing from over tightening.

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Does seem that you’ve dealt with most of the likely candidates! One test is to hold the carburettor throttle spindle steady of even screw the idle stop screw fully in to stop the spindle moving. If the hunting persists it is a fuelling issue. If not, maybe try a new spring.
Have you tried fully loading the drum to make the engine “work”? The reason for asking this is that way back when the 5HP version of your engine with a similar tank, throttle and governor set-up was fitted to the Atco 24 lawnmower some machines had a”hunt at idle” problem but the machine was fine when under load. The cure then was to fit an additional very light governor spring to steady the carb spindle. Fairly sure that I still have the Briggs Service Bulletin somewhere if needed!

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Most (but not all) Briggs hunting issues are to fuel starvation resulting from gumming in the carburettor and / or weak fuel delivery due to a hardened pump diaphragm. Things to look at are partial blockage of the filter screen on the bottom of the long pick-up pipe, ditto the short pipe, hardened diaphragm and general varnish / gum in any accessible carb passages.
Use the BS Model, Type and Code numbers to get the correct diaphragm – guessing 270026. Unlikely to be the gov spring unless it shows signs of having been mauled about!

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Just got the tedious job of removing all the old concrete.

Can you not use the “brick acid” from the builders’ merchant – or is that a no,no?

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While you may not need the type number for your immediate problem it might be useful for other issues such as identifying the ” structure” behind the pulley which is not a standard 8000 series fitment – an additional crank support bearing? Also, the end of the crank would appear to be splined. I wonder whether that engine originally had a factory fit reduction box?

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11am on the 21st

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Also there’s a range of Flymo badged professional machines including cylinder mowers and trailed seats to fit too – there was some business links (cannot remember how) between Flymo, Electrolux, Norlett and a few others so perhaps the machines were shared between them and re-badged.

You left out Husqvarna! The link is that Electrolux owned all of them ; and I nearly forgot Jonsered!

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Here’s another machine that was cheap and cheerful in its day and thrown away by the dozen.
The original E30 Qualcast Concorde.

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More Quatermas than Time Team!

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This is the man to contact
clive.gravett@oldlawnmowerclub.co.uk

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Is the transaxle of exactly the same spec or just the same shape? Could be a different ratio setup for a different machine?
Another possibility is that you’ve incorrectly positioned the belt or belt guides – belt the wrong side of one of the keepers?

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