Lawnmower advice for the mechanically retarded.......

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Lawnmower advice for the mechanically retarded.......

Just inherited (found in garage of house just moved into) a tired looking Suffolk Punch 30 mower.

All seems there, except for the spark plug.

Anyone know which plug I need to buy?

Does it run on just unleaded or is it petrol/oil mix? (if so, ratio?)

Anyone got a manual or maintenance book for one I could buy/copy?

Thanks in advance.

HFB

www.oldlawnmowerclub.co.uk/moms/mom20-pun.htm"The mower was made by Suffolk Iron Foundries of Stowmarket... Suffolk eventually became part of the Atco Qualcast group of companies and the name passed into obscurity for a number of years. However, the company's original base in Stowmarket remains a site of lawn mower production and is currently the headquarters of the Atco Qualcast group which is now owned by Bosch."Gave away a 40 year old good 'un recently...

honda fatboy wrote

Just inherited (found in garage of house just moved into) a tired looking Suffolk Punch 30 mower. . . . . .

You are probably a lucky guy, honda fatboy. If it has the aluminiun housing for the start rope coil, you are on to a winner. If it has the plastic housing it will soon give trouble.The old Punch is a sturdy machine. It will take near enough any spark plug providing it does not have a reach (length of thread which goes into top of cylinder bore) of more than say 10 -12mm under the washer.Are you sure the trouble is the spark plug? If it has been standing for ages, the points may not be opening and closing. It is very likely they are stuck open; if ithe mower was not stored correctly.It is a four stroke engine and takes normal (no oil mixed with it) petrol. Have always used unleaded. Does it have a grass box?Just PM if you get stuck.

rydalong wrote

It is a four stroke engine and takes normal (no oil mixed with it) petrol. Have always used unleaded.

Careful - my 40 year-old 4-stroke expected leaded petrol...

I used to work in the factory.

Prodiver wrote

Careful - my 40 year-old 4-stroke expected leaded petrol...

You are right, Provider. Very nearly put in earlier post that somebody is bound to come up with the correction that leaded fuel SHOULD be used. That is why the the topic was worded the way it was - ". . Have always used unleaded. . . .". Just a statement of fact - very non-commital - take it or leave it. When those machines were built, lead free fuel was not available.Those old engines can take a fair bit of abuse - how often do people change the oil?? It is not as if they need to do the "work" that you bike engine does, is it?

William Tell wrote

I used to work in the factory.

. . . in Stowmarket ?

rydalong wrote

. . . in Stowmarket ?

Yes, left in 1987 and rather sadly my father worked there in the early 70s.

I have a second hand Qualcast Suffolk Punch (plastic cover on pull cord winding ) probably about 5 years old??.Does anyone know what maintenance I should do on it? How do I do an oil change?

MyLittleStudPony wrote

I have a second hand Qualcast Suffolk Punch (plastic cover on pull cord winding ) probably about 5 years old??.Does anyone know what maintenance I should do on it? How do I do an oil change?

To do an oil change you take the drain plug out, tip the engine on it's side so all the oil drains out, set engine flat again, put the drain plug in, take out the oil filler plug and fill with oil till you can't get any more in it. The lubrication is by splash and they'll run for years on very little oil.

MyLittleStudPony wrote

. . . Does anyone know what maintenance I should do on it? How do I do an oil change?

Sorry, MSTP, it won't last like the oldies-but-goodies they made all those years ago. Maintenance is minimal. Oil cables, oil pivot points for levers, etc, grease bearings, if the still have grease nipples, change oil. When you put it away 'til next Spring, rotate the engine and leave it on the compression stroke.If the newer engines are anything like the old ones there is an oil drain plug on the opposite side of the engine block to the oil filler. The filler is probably at the front. It may have a screw top plug which is likely to have a dip-stick attached to it.Run engine to get oil warm/hot, drain oil - may be messy so protect ground (may need to tilt machine backwards or forwards depending on where drainhole is), refill with new oil.

honda fatboy wrote

All seems there, except for the spark plug.HFB

If it's been sitting for ages with no plug chances are it will have corroded around the bore/piston or the rings could be stuck, does it turn over?

rydalong wrote

You are right, Provider. Very nearly put in earlier post that somebody is bound to come up with the correction that leaded fuel SHOULD be used. That is why the the topic was worded the way it was - ". . Have always used unleaded. . . .". Just a statement of fact - very non-commital - take it or leave it. When those machines were built, lead free fuel was not available.Those old engines can take a fair bit of abuse - how often do people change the oil?? It is not as if they need to do the "work" that you bike engine does, is it?

Yes - those Briggs and Stratton engines aren't stressed much, and unleaded may work OK - but it'd ne a pity to burn out the exhaust valve.Best use some octane raiser fluid, though I spose perfectionists'd just retard the ignition and richen up the carb a bit...

William Tell wrote

To do an oil change you take the drain plug out, tip the engine on it's side so all the oil drains out, set engine flat again, put the drain plug in, take out the oil filler plug and fill with oil till you can't get any more in it. The lubrication is by splash and they'll run for years on very little oil.

Cheers!

rydalong wrote

Sorry, MSTP, it won't last like the oldies-but-goodies they made all those years ago. Maintenance is minimal. Oil cables, oil pivot points for levers, etc, grease bearings, if the still have grease nipples, change oil. When you put it away 'til next Spring, rotate the engine and leave it on the compression stroke.If the newer engines are anything like the old ones there is an oil drain plug on the opposite side of the engine block to the oil filler. The filler is probably at the front. It may have a screw top plug which is likely to have a dip-stick attached to it.Run engine to get oil warm/hot, drain oil - may be messy so protect ground (may need to tilt machine backwards or forwards depending on where drainhole is), refill with new oil.

Cheers It may not last for decades but if I get a few years out of it, I'll be happy.With the electric Flymo I felt like a glorifed houswife pushing a vacuum cleaner. With the petrol mower I feel like a steam train driver.

Prodiver wrote

Yes - those Briggs and Stratton engines . . .

The old Punch had an engine of its own. It was shared with the smaller Colt mower. It is believed to have been made in their Stowmarket factory. As indicated earlier, the old engine is very reliable, and so simple to work on - but they don't need work, they go for ever. Believe current machines suffer B&S power.Personally, if a machine has a B&S engine, it is given a wide berth. OK when new, but when they show signs of wear they are a devil to start. It is then that "tricks" are needed. :smoke:

rydalong wrote

The old Punch had an engine of its own. It was shared with the smaller Colt mower. It is believed to have been made in their Stowmarket factory. As indicated earlier, the old engine is very reliable, and so simple to work on - but they don't need work, they go for ever. Believe current machines suffer B&S power.Personally, if a machine has a B&S engine, it is given a wide berth. OK when new, but when they show signs of wear they are a devil to start. It is then that "tricks" are needed. :smoke:

I stand corrected - and now I think about it it was our previous mower - a Hayter? - whose B & S engine played up, so we got a big Punch...

I've just got me self an old punch and it's younger brother qually both good runners but look like they bin dug up, rusty as an old capri, any way I'm gona restore these little beauties to there former glory can not wait to see um shine again

I have the 21" self propelled

I have the 21" self propelled Ego 56 volt lawn mower. I got the largest 7.5 Ah battery plus a 2.5 Ah battery. Got their 15 inch string trimmer and 530 cfm blower. My lots 50x110. I can do it and my neighbors 60x110 without charging. SO NICE to be cord free after 32 years of cords.

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