wsm STW37 Workshop Manual page 76

STW34, STW37, STW40, WSM
1. LUBRICATING SYSTEM
A lubricating system consists of an oil strainer (9), oil pump (8), relief valve (10), oil filter cartridge (11) and oil
pressure switch (2).
The oil pump sucks lubricating oil from the oil pan through the oil strainer and the oil flows down to the oil filter
cartridge where it is further filtered. Then the oil is forced to crankshaft (7), connecting rods (16), idle gear (6),
governor shaft (5), camshaft (14) and rocker arm shaft (3) to lubricate each part through the oil gallery.
1-M1
ENGINE
(1) Rocker Arm
(2) Oil Pressure Switch
(3) Rocker Arm Shaft
(4) Valve
(5) Governor Shaft
(6) Idle Gear
(7) Crankshaft
(8) Oil Pump
(9) Oil Strainer
(10) Relief Valve
(11) Oil Filter Cartridge
(12) Push Rod
(13) Tappet
(14) Camshaft
(15) Piston
(16) Connecting Rod
9Y1211109ENM0001US0
KiSC issued 11, 2014 A