Small machines rarely get much documentation, so the existence of LIT-11616-MJ-01 matters. It is Yamaha's service manual for the 1982 Towny, code MJ50J, and it covers that model year alone.
A single-year book has one straightforward advantage: every figure printed in it applies to your machine, with no cross-referencing between codes or seasons.
What it covers
Specified tightening torques, service and wear limits, disassembly and reassembly in the factory's order, wiring, and fault-finding for the ignition, fuel and charging systems.
Confirm MJ50J on the frame plate and quote LIT-11616-MJ-01 when checking against anything you already own. For a step-through of this age, the tolerance figures are often the only way to decide whether a worn part is still serviceable.
Nothing here has been rewritten for a general readership.
