Five minutes left to do the back garden and the engine died !
Absolutely no compression and the engine just rolling over and over on
the starter cord.
So off with its head (!) and there's the inlet valve with a lump of
muck stopping it closing, and quite a lot of muck all round. Not that
surprising considering that the machine (Landmaster 100) is seriously
old and has to have its oil topped up after each use, but it goes and
until today went well.
Anyway to the point ! It's I believe a Briggs and Stratton engine -
the cylinder head came off cleanly and judging by the missing washers
may have been off before. The query is do I need to use gasket goo
when replacing it - the gasket is in good condition. I guess this is
a genuine B & S engine not one of the modern Chinese clones.
I was amused to see that the speed regulator works off a blade in the
cooling air flow - crude but obviously adequate.
Marginal vs fixed cost is more complicated than that. If you've got the car
for other uses, then the additional cost to you is the pertinent thing - ie
insurance, tax, MOT aren't relevant, and maintenance/repairs and
depreciation less than full cost.
OTOH if you're eg running a bigger car for the occasional shifting job, then
in some ways it ought to be costed the other way round - ie load the
additional depreciation etc onto those shifting jobs you want the bigger car
All nasty and complicated, so I just avoid it by running a car which has no
depreciation left which leaves fuel as the dominant cost :-)
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