A set of piston rings for Suzuki AD scooters. The rings seal the piston in the cylinder: they hold compression and scrape excess oil from the walls, keeping it out of the combustion chamber.
It is worth replacing the rings if compression drops, starting is hard, power is lost, oil consumption is higher, or there is bluish smoke from the muffler. The +0.50 mm size is an oversize (enlarged): it is used when the cylinder has been bored for an oversize piston.
- Before assembly, wash and inspect the mating surfaces.
- Lubricate the moving parts with engine oil and break in the engine at moderate revs.
