Ransomes Marquis Mk4 - in need of re-animation

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MattD
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Joined: 06/05/2019 - 21:27
Ransomes Marquis Mk4 - in need of re-animation

My 17" super colt (I think - perhaps super punch - anyway 98G14 engine) was a bit reluctant to start this season, so the obvious answer was to buy another completely non-working Marquis Mk4 20"  (serial number DE716) ......which somehow feels like buying a jag as an upgrade to a cortina but perhaps I am being disloyal to Suffolk.

I think it has been 'stored outside' for a few years, but the engine turns over and it's basically complete.  There is so much greasy grime on it that a lot of it seems in good condition underneath - obviously the exposed paintwork is a bit rough.  One of the main rollers seems jammed, the other spins freely.  There are only two front wooden rollers left and no grass box - which i have no doubt will cost me at least 5 times what the mower cost,  but I think that stage is a long way off yet. 

I was hoping for one of those 'despite being immersed in a bog for three decades, a splosh of fresh fuel, and  a light going over with a feather duster and she started on the second pull' type of anecdotes.  Unfortunately that is not the case.

I have a  couple of questions:

1) There is no sign of a spark at all, despite vigorous pulls- either across spark gap or from end of HT lead.   I saw a reference in another thread to a 'window' through the flywheel, but I cannot see it.  Is the next stage to take off the flywheel and get at the points (or electronic ignition?) or are there other things I can try to do first?   (I am desperately trying to avoid my 9 year old boy instinct to just take stuff apart willy nilly and end up with a pile of bits)

2) There is a sort of bracket thing on the back of the engine shroud that looks as if it may be meant to hold a spring, and perhaps rotate - is it some kind of choke mechanism?

3) Is the big disk a centrifugal clutch ?- if so it appears to be jammed as it always turns the drive shaft even when rotated slowly by hand.

In the meantime I will shove a scope camera down the plug hole and see if I can see the state of the inside of the cylinder, and drain the oil and refill it.  I have squirted every visible nut and bolt with penetrating oil.  I am considering buying an ultrasonic cleaner to clean the carb (and the zenith off the suffolk).

Thanks in advance - I know the depth of expertise to be found on this forum, and the willingness with which it is shared - I was last here asking questions about a kick start 2 stroke late 1950s Atco, in about 2009..... in the end I had to sell it - it was like driving a tank around a small lawn - noise, smell and fear.

 

 

 

wristpin
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Joined: 23/05/2012 - 22:09
Never mind pics down the bore

Never mind pics down the bore, let's have some general ones of the machine to aid identification of the "sort of bracket" and even what engine you have. If theres no window in the flywheel, I'm guessing a Briggs and Stratton. Stamped into the blower housing (engine shroud) will be the words Model, Type and Code. The numbers under those words will tell a story but for now if the first two digits of the number under Code are 80 or later, your engine should have electronic ignition and theres no need to pull the flywheel.

Let's  have those images

 

MattD
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Last seen: 1 week 3 days ago
Joined: 06/05/2019 - 21:27
Its definitely a BSA sloper .

Its definitely a BSA sloper ..hence why I was mad enough to buy it -- I will take some closer pics in the daylight but these are the ones I have at the moment