tool lean mixture
stoichiometric mixture
most economical mixture
too rich mixture
spark plug gap too small
spark plug gap too wide
vapour lock in the fuel only
incorrect fuel air mixture
gravity
the pressure created by the oil pump
splashing action of the crankshaft
none of these
oil pan
cylinder head
oil pump
separate oil tank
oil strainer - oil pump - relief valve - oil filter - cylinder block - cylinder head - oil pan
oil pump - oil strainer - relief valve - oil filter - cylinder block - cylinder head - oil pan
oil strainer - oil filter - relief valve - oil pump - cylinder block - cylinder head - oil pan
oil strainer - oil pump - relief valve - oil filter - cylinder head - cylinder block - oil pan