Suzuki K6A-YH6 Technical/Repair Manual page 29

THEORY OF OPERATION
Pistons attached to connecting rods are made of an
aluminum alloy and use a full-floating piston pin. Piston
pin holes are equipped with a "Ricardo Groove" to aid in
lubrication. Pistons incorporate a slipper skirt with three
rings: two compression and one oil type.
The engine lubrication system incorporates a lightweight
aluminum oil pan with internal crankshaft baffle. Engine
oil is removed from the pan through a strainer pickup by a
crankshaft driven oil pump with integral oil pressure
regulator. Engine oil is routed through a full-flow oil filter
that houses an internal filter bypass valve and then
distributed throughout the engine.
A belt-driven water pump removes coolant from a full-flow
radiator and circulates the coolant through the entire
engine. The coolant temperature is controlled by the
cylinder-head-mounted thermostat housing containing
the thermostat.
The electronically controlled fuel injection system
efficiently supplies fuel to the engine, while maintaining
optimum performance and throttle response. Port
4
injectors with a common fuel rail in conjunction with a
throttle body are used for fuel distribution.
4-3