Change Oil - Pressure Lube Engines; Change Oil Filter; Oil Fill Tube And Dipstick; Crankcase Breather - Briggs & Stratton Twin Cylinder L-Head Repair Manual

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Change Oil – Pressure Lube Engines

The crankcase capacity of pressure lube twin cylinder

engines is approximately:

3-1/2 Pints (1.65 liters) with filter

3 Pints (1.42 liters) without filter

IMPORTANT: DO NOT OVERFILL. Check and main-

tain oil level regularly. Change oil after first five (5)

hours of operation.

NOTE: When checking oil level, dipstick must

be screwed all the way in for accurate

readings.

Thereafter, change oil every fifty (50) hours of opera-

tion. Change oil more often if engine is operated in dirty

or dusty conditions or if engine is operated under

heavy loads or in high ambient air temperatures.

Remove oil drain plug and drain oil while engine is still

warm, Fig. 1 and Fig. 2. Replace drain plug.

Change Oil Filter

Replace oil filter every 100 hours of operation. Before

installing new filter, lightly oil filter gasket with fresh

clean engine oil. Screw filter on by hand until gasket

contacts filter adapter. Tighten 1/2 to 3/4 turn more,

Fig. 3.

Remove dipstick and refill slowly with new oil of proper

service classification and viscosity grade. Start and

run engine to check for oil leaks.

OIL FILL TUBE AND DIPSTICK

The oil fill tube and the dipstick are equipped with

“O”-rings and/or a grommet for proper sealing, Fig. 4.

NOTE: A leak at the seal between the tube and

sump, or at the seal at the upper end of the

dipstick, can result in a loss of crankcase

vacuum and a discharge of oil or smoke

through the muffler.

CRANKCASE BREATHER

The engine utilizes a breather valve to control and

maintain a vacuum in the crankcase. The breather

vents crankcase vapors through the air cleaner.

Horizontal crankshaft twin cylinder engines manufac-

tured after 91080000 have only one breather valve and

breather tube: for #1 cylinder, Fig. 5.

OIL

GASKET

1/2 – 3/4

TURN

OIL

FILTER

Fig. 3 – Install Oil Filter

“O”-RINGS

GROMMET

Fig. 4 – Oil Fill Tube And Dipstick (Typical)

NOTE ONE

BREATHER AND TUBE #1

CYLINDER

Fig. 5 – Horizontal Crankshaft Models

After Date Code 91080000

Page 3

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Change Oil - Pressure Lube Engines; Change Oil Filter; Oil Fill Tube And Dipstick; Crankcase Breather - Briggs & Stratton Twin Cylinder L-Head Repair Manual

Change Oil Filter

OIL FILL TUBE AND DIPSTICK

CRANKCASE BREATHER

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