Kawasaki S1

GEARBOX

Second gear can fail due to bent selector forks. The pins on the gear linkages can wear, allowing the lever to touch the rider's foot and this unintentional connection can place further strain on the system.

WEAR & TEAR

Rings, piston and little-ends will have experienced a frenetic life so make sure the engine's not on maximum oversize; re-sleeving will cost around ÂŁ120 a pot. 0uter crank seals can leak so look for an oil leak on the left-hand side near the points or gearbox oil being dragged in the engine from the right-hand side.

CHASSIS

Look out for