Engine Information - Briggs & Stratton Quantum 120000 Series Operating & Maintenance Instructions

ENGINE INFORMATION

1
1. Primer bulb (if equipped)
2. Carburetor
3. Spark plug wire
4. Cylinder area
5. Muffler/(Muffler guard, if equipped)/
(Spark arrester, if equipped)
6. Flywheel brake
7. Engine Model
xxxxx
GENERAL INFORMATION
ENGINE MODEL
This is a single cylinder, L-head, air-cooled engine. It is a
low emissions engine.
In the state of California, the 120000 series engines
covered in this manual are certified by the California Air
Resources Board to meet emissions standards for 125
hours. Such certification does not grant the purchaser,
owner or operator of this engine any additional warranties
with respect to the performance or operational life of this
engine. This engine is warranted solely according to the
product and emissions warranties stated elsewhere in this
manual.
MODEL SERIES 120000
Bore . . . . . . . . . . . . . . . . . . . . . . . . .
Stroke . . . . . . . . . . . . . . . . . . . . . . . .
Displacement . . . . . . . . . . . . . . . . .
Note: For practical operation, the horsepower loading
should not exceed 85% of rated horsepower. Engine power
will decrease 3-1/2% for each 1,000 feet (300 meters)
above sea level and 1% for each 10° F (5.6° C) above 77° F
(25° C). It will operate satisfactorily at an angle up to 15°.
2
3
4
Type Code
xxxx xx xxxxxxxx
2-11/16 in. (68.26 mm)
2-3/64 in. (51.99 mm)
11.57 cu. in. (189.6 cc)
7
8
9
6
14
5
8. Oil fill/Dipstick
9. Fuel tank
10. Air cleaner
11. Fuel fill
12. Finger guard
13. Rope handle
14. Side drain plug (if equipped)
TUNE-UP SPECIFICATIONS
Armature air gap
Spark plug gap . . . . . . . . . . . . . . . . . .
Valve clearance with valve springs installed and piston 1/4 in.
(6 mm) past top dead center (check when engine is cold).
See Repair Manual P/N 270962.
Intake . . . . . . . . . . . . .
Exhaust . . . . . . . . . . .
THE INTERNATIONAL SYMBOLS USED
ON THE ENGINE OR
IN THIS MANUAL INCLUDE:
Safety Alert
Fuel Shutoff
Primer
6
13
. . . 0.006 – 0.010 in. (0.15 – 0.25 mm)
0.030 in. (0.76 mm)
0.005 – 0.007 in. (0.13 – 0.18 mm)
0.005 – 0.007 in. (0.13 – 0.18 mm)
Read Owner's
On Off
Manual
Oil Stop
Choke
12
11
10
Fuel