Hi, Ken.
The smaller jet is likely for the front or rear. The larger jet is
for some other vehicle. The front and rear jet difference is in the
angle that the hose comes out of the jet body at the bottom. There
now exist non-handed jets where the hose comes straight out (radially)
so they fit front and rear carbs equally poorly.
Hope this helps.
Donald.
(BTW, jet ID should be 0.090 in; large one should be 0.100 in. unless
it is just a very worn 0.090 jet. Burlen fuel systems is the
authority on these beasts -- www.burlen.co.uk -- and they have great
technical reference material for reasonable cost.)
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