In message , c.les hewitt
writes
I am unsure about Jet Lathes, I don't think they're sold inthe Uk.If it is
speed control via adjustable sliding pulleys, then I'm afraid you need to
disassemble the pulley mechanism, and coat the splines on the driveshaft
with dry lubricant( failing all else, black lead or ground up lead from a 6B
pencil). This treatment has worked to keep my Draper lathe working well for
5 years.

JET are sold in the UK, the franchise being owned by Axminster.co.uk
The budget range of Axminster Lathes are like the Grisley But I believe
they are imported by JET There are several others Brads selling the same
beasts. They use the adjustable sliding pulleys ( mine has them) One
other thing to watch for is a grub screw on the motor output shaft
between pulley and motor sometimes these work loose so the whole thing
becomes less effective

--
John