1919-1981 Briggs & Stratton 4 Cycle Air-Cooled Engine Service Manual – PDF DOWNLOAD

Description

1919-1981 Briggs & Stratton 4 Cycle Air-Cooled Engine Service Manual – PDF DOWNLOAD

FILE DETAILS:

1919-1981 Briggs & Stratton 4 Cycle Air-Cooled Engine Service Manual – PDF DOWNLOAD

Language : English
Pages : 341
Downloadable : Yes
File Type : PDF
Size: 21.2 MB

IMAGES PREVIEW OF THE MANUAL:

DESCRIPTION:

1919-1981 Briggs & Stratton 4 Cycle Air-Cooled Engine Service Manual – PDF DOWNLOAD

GENERAL INFORMATION:
Briggs & Stratton engines are of the same basic 4 stroke cycle design used in automobiles, aircraft, trucks, and
tractors. As the name indicates, there are four strokes to one complete cycle:
Fig. 1 − THE 4-STROKE CYCLE
1. INTAKE STROKE 2. COMPRESSION STROKE 3. POWER STROKE 4. EXHAUST STROKE
1. INTAKE STROKE: The piston goes down, creating a vacuum in the cylinder which draws gas through open intake
valve into the space above the piston.
2. COMPRESSION STROKE: The piston comes up with both valves closed, highly compressing the gas into the
space left between the top of the piston and cylinder head.
3. POWER STROKE: At this point the magneto sends high tension current to the spark plug, firing or exploding the
compressed gas and driving the piston down.
4. EXHAUST STROKE: Exhaust valve opens and the upward stroke of the piston forces out all of the burnt gases,
thus completing the power cycle.
USE CLEAN GASOLINE:
A good, clean, fresh, regular gasoline is recommended. A gasoline of too high test may form a vapor lock in the fuel
line when engine gets hot. This interrupts the flow of gasoline and cause the engine to stop. The use of highly leaded
gasoline also is to be avoided as it causes deposits on valve seats, spark plug points, and in the cylinder head,
thereby shorting engine life.

TABLE OF CONTENTS:

1919-1981 Briggs & Stratton 4 Cycle Air-Cooled Engine Service Manual – PDF DOWNLOAD

GENERAL INFORMATION Section 1
IGNITION Section 2
AIR CLEANERS, CARBURETORS & GOVERNORS Section 3
COMPRESSION Section 4
PISTONS, RINGS & CONNECTING RODS Section 5
OIL SYSTEMS Section 6
ALTERNATORS, ELECTRIC, MECHANICAL &
REWIND STARTERS, STARTER – GENERATORS Section 7
CRANKSHAFTS, CAM GEARS Section 8
CYLINDERS Section 9
BEARINGS Section 10
SPECIAL INSTRUCTIONS Section 11
TOOLS Section 12

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