51
4
8
Oil Fill Tube and Dipstick
This engine uses a plastic extended oil fill tube
(A, Figure 8-1) and a quarter-turn dipstick with o-
ring (B). An o-ring (C) seals the tube in the sump
and a retaining bracket (D) and screw secure it to
the engine.
The oil fill tube and dipstick must be replaced as
a set.
Breather
Briggs & Stratton engines utilize a breather valve
system to control and maintain crankcase
vacuum. The breather valve installed on this
engine is a reed which closes on the piston up
stroke and opens on the piston down stroke.
Remove Breather
1. Remove breather tube (E) from breather
cover (F).
2. Remove two screws (G), breather cover,
and gasket. Discard gasket.
Check Breather
1. Remove and check breather reed (H). If
the reed is worn or bent it cannot function
properly and must be replaced.
2. Inspect the oil-drain back hole in the
breather cavity. Insert a fine wire to ensure
the opening is not plugged.
Install Breather
1. Install reed with the metal tab facing away
from the crankshaft. Torque screw to
value listed in Section 12 - Engine
Specifications.
2. Using new gasket, install breather cover
and torque screws to values listed in
Section 12 - Engine Specifications.
3. Securely install breather tube in breather
cover.
Oil Slinger Lubrication
The governor gear/oil slinger (J) is used on
vertical shaft engines. It is mounted to the sump
and driven by the cam gear.
Inspect Assembly
1. Visually inspect governor gear/oil slinger
assembly for wear, broken teeth, broken
slinger paddles, or burrs.
2. Ensure governor gear and slinger rotate
freely. Check for worn weight pins, worn
cup, or sticking weights.
3. The governor gear can be replaced, but if
there is damage to the oil slinger, the
entire sump must be replaced as an
assembly.
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