David Bliss

I have posted info wanted on the US Bolens web site. several people have the Murray lawn tractors, this is the web site if it helps. https://www.mytractorforum.com/forums/bolens-forum.18/

yes like Charlie said heat helps, but be careful if its a large lump of cast iron, heat, soak with paraffin or WD 40 and walk away, do this several times is better than loosing it and trying to do it in one hit. Often people try removing the key with an ordinary chisel, it may work if not tight but does harm to the key head, I use a C shape key…[Read more]

some of the linings to start with are very soft and pliable like thick rubber so not a problem, once fitted you can set the cure by heating in a ordinary oven, the longer its left in the harder the lining gets, so once heated it sets to that time its left in and if taken out early will be soft, and no amount of heat after that will make it hard.

That sounds quite a bit, however it depends where you go, just remember with a cone it isn’t a strait strip, but a flattened C so it just lays flat, just try a strait strip of paper to see what happens, of cause you can use brute force. A friend wanted to renew his cone tin-work on his cement mixer, plenty of cardboard scissors and gaffer tape,…[Read more]

On those it makes no difference as long as they don’t slip. more the same with plate types, grease going very gummy isn’t good, I sort out car cone and plate clutches, some are dry others are wet, however the bit in-between can cause thousands of pounds damage, this is because the know it alls change the material as is very critical, some leather…[Read more]

We had a BMB plough mate with all the tools with no diff lock but did have independent oil immersed brakes, it was easy to use, that is until reversing even with a plough on would lift me off my feet and the clutch leaver was then out of reach, needs must and fitted a cultivator depth wheel up front, what a difference as used to go everywhere in…[Read more]

Andy
Often people think the two strokes rev higher by the sound, Saab done a 3 cylinder two stroke car in the 60’s and were very torquay and reasonable quick, they ran up to 4,000 rpm at about 90mph, that sounded like 8,000 rpm like ripping canvas but came at a cost of 20 mpg. Auto Union, Mercedes and Wartburg also made almost identical engines.
David

Believe pre war there was a twin ported large two stroke Villiers.

David

Someone may have at sometime adjusted wrongly the valve clearance by grinding to much off the stem of the valve, this stops the very crude rubbish compression release from working, it consists of small bump on the back of the cam. Seen this done to worn out engines to get better running they do idle better but at a cost to your fingers being…[Read more]

Going back the 23 years got good backup and sensible helps to a problem, and looks like the new engine might have had known ignition issues and the firm should I would have thought known this and sorted it, and fist engine also had carburettor issues especially at idle, new ones have fixed air bypass adjustments? where as the old were adjustable.…[Read more]

Forgot to attach the bit of info on electronic ignition I was sent this.

David
Here’s a write up on how the Briggs electronic coils work to advance the timing at higher rpms. I suspect your coil on the weak side is out of spec.

“The simple, but very effective, spark control system advances the ignition timing, causing the plug to fire earlier…[Read more]

This is if any one is thinking of updating something with one of the Briggs & Stratton V twin Vanguard as have had over a year in getting one of those engines to run nearly as it should. I have one of the first now 23 year old V twin Vanguard Briggs that still runs as new and was made in Japan and few people know that, to start with the old engine…[Read more]

Poulan Sweden? however brain leaked but I have an idea they made chainsaws.

I must have had several over the years, they’re a absolute nightmare being temperamental they altered them I reckon hourly so very difficult to find interchangeable parts if not complete, Its a funny feeling working on those that had been in service, one had the barrel bent so was tight to turn over, being all alloy I was surprised it hadn’t…[Read more]

Homelite were used on many generators to chainsaws, Drones and Ken Wallis them in his Auto-Gyro, one that was used during the war used for the emergency generator that sat under wireless operators desk? in the liberator was bit unusual being two stroke with a governed rotary inlet valve, a no float carburettor sat on-top of the tank with hand…[Read more]

I suppose going back many years just took it for granted some engines although looked the same but weren’t and a real pain to work on, Aspera made light duty engines without the needle roller big and little end bearings and industrial with, Teles used them on there chainsaws, I had one brought to me that was running a bit under powered and flat as…[Read more]

Unless its worn out every where else its worth repairing, the pump would not be worked by the big end dibber, would have thought off the camshaft, I get really cheesed off with peoples attitude nowadays, many new things you take them out of the packaging use a few times and they’re scrap. Yesterday helping my daughter took my three chain saws all…[Read more]

Engine sort of sounds ok apart from the spitting back that’s not quite like an ignition type fault sound causing the spitting, I have had early veteran car engines do something similar as the inlet valves are atmospherically opened and not mechanical, you have to get the valve spring strength fine tuned, to strong and you loose power and to weak…[Read more]

I have been restoring engines in size from small to large, the older bronze carbs are slightly easier as can heat parts but the die-cast monkey metal ones can be very delicate and more care is needed to get stubborn screws and jets out, many years ago just by accident after washing my hands left a real badly petrol varnish encrusted carburettor in…[Read more]

I can see why the O rings are not a fix and forget as taps wear in use and wouldn’t accommodate the wear. If the taps are not fully on or off the O ring is allowed to expand and if then pushed fully home it can cut a bits out of the O ring, it all so happens to the modern ball valves if not turned fully on or off and left. Whats wrong with keeping…[Read more]