Oil Flow - Polaris Sportsman 700 Efi 2005 Service Manual

ENGINE

OIL FLOW

This chart describes the flow of oil through the 600/700/800 engine. Beginning in the crankcase sump, the oil
is drawn through an oil galley to the feed side of the oil pump. The oil is then pumped through the oil filter. If the
oil filter is obstructed, a bypass valve contained in the filter allows oil to bypass the filter element. At this point,
the oil is supplied to the main oil galley through a crankcase passage. Oil is then diverted three ways from the
main oil galley, with the first path entering the camshaft bores, onto the rear balance shaft journal and then draining
back into the crankcase sump. The second oil path from the main oil galley feeds the lifter bores and then drains
back to the crankcase sump. The third oil path flows through a crankcase galley to the MAG side crankshaft
journal and also to the front balance shaft journal and onto the crankcase sump. The oil pressure switch is fed
off the main oil galley.
Crankshaft
Main Bearing
PTO
SIDE
Oil Pressure
Relief
Pump
Crankcase
Sump
3.20
Crankcase
Sump
Bearings
Counterbalance
Bore
Camshaft
Bore
Main Oil Gallery
Filter
Rod
Crankshaft
Main Bearing
Counterbalance
Bore
Camshaft
Camshaft
Bore
Bore
Lifter Bores
MAGNETO
SIDE