Has anyone any idea ,what the Unipart GSU 425 jet fits ?? ( also S350 F2 is printed on the back of the pack )
I bought it some time ago, hoping it would fit my Morris 1000 1965 ??
Any help in identifying the part would be appreciated . Cheers Arfron
Hello Arfron,
if you want to replace your existing jet, the remove it and compare. Using the needle you can double check that the jet is compatible. S.U.'s have 0.090", O.!00" and 0.125" jets. HS 2 and HS 4 are 0.090", and the idle portion of the needle (just below the shoulder) is only about 0.001" (1 thou) smaller in diameter than the correct jet. So with the needle fully into the jet there will only be perceptible slack.