Specifications

8
5
Slinger Lubrication, Oil Slinger Aluminum
Alloy Engines
The oil slinger (2) is driven by the cam gear (1) and
splashes oil on all moving engine parts.
Early style slingers, Fig. 12. Illus. 1, using a die cast
bracket assembly have a steel bushing between the
slinger and the bracket. Replace bracket on which the
oil slinger rides if worn to a diameter of .490” (12.4 mm)
or less. Replace steel bushing if worn.
Current style oil slingers, Fig. 12. Illus. 2 and Fig. 13
(vertical crankshaft engines) have a stamped steel
bracket. Unit is a one piece assembly. Spring washer is
used only on Model Series 100900, 130900. Inspect
gear teeth, both styles and replace if worn.
NOTE:On Model Series 130700, 130900, 131700,
132900 equipped with right angle drive
P.T.O. DO NOT USE SPRING WASHER on
oil slinger bracket.
Fig. 12
Illus. 1 Illus. 2
2
1
2
1
Fig. 13
3
1
2
OIL GARD

Some models of Briggs & Stratton engines are
equipped with Oil Gard

, a low oil shut-off system
designed to prevent engine damage before the engine
becomes damaged by running with insufficient oil.
Two types of Oil Gard

have been used; float operated
type, Fig. 14 and spark gap type, Fig. 15.
Principles of Operation, Float Type
This Oil Gard

system uses a float to operate a
magnetic switch, depending on oil level in engine
crankcase. When oil level is at correct level, the float
rises, opening the magnetic switch (1), Illustration 1.
When oil level drops below a minimum level, the float
drops, causing the magnetic switch to close (2),
Illustration 2.
When this happens,
1. The ignition primary current will cause the warning
light (3, when equipped) to flash.
2. The engine will stop.
The engine cannot be restarted until the oil level is
restored to correct level opening switch contacts,
Fig. 14.
Fig. 14
Illus. 1
Illus. 2
1
2
3