General Information; Tune-Up Specifications - Briggs & Stratton 90000/10000 Operating And Maintenance Instructions Manual

ENGINE INFORMATION
3
2
1
1. Carburetor
2. Air cleaner
3. Rope handle
4. Finger guard
5. Oil fill/Dipstick
6. Engine Model
xxxxx
7. Muffler/(Muffler guard, if equipped)/
(Spark arrester, if equipped)

GENERAL INFORMATION

This is a single cylinder, L-head, air-cooled engine. It is a
low emissions engine.
MODEL SERIES 90000
Bore . . . . . . . . . . . . . . . . . . . . . . . . . .
Stroke . . . . . . . . . . . . . . . . . . . . . . . . .
Displacement . . . . . . . . . . . . . . . . . .
MODEL SERIES 100000
Bore . . . . . . . . . . . . . . . . . . . . . . . . . .
Stroke . . . . . . . . . . . . . . . . . . . . . . . . .
Displacement . . . . . . . . . . . . . . . . . .
4
7
Type Code
xxxx xx xxxxxxxx
2-9/16 in. (65.09 mm)
1-3/4 in. (44.45 mm)
9.02 cu. in. (147.8 cc)
2-9/16 in. (65.09 mm)
1-7/8 in. (47.63 mm)
9.67 cu. in. (158.6 cc)
5
13
6
12
11
8. Spark plug wire
9. Governor control lever
10. Primer bulb
11. Fuel tank
12. Fuel fill
13. Flywheel

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 . . . . . . . . . . .
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°.
6
10
9
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)
0.007 – 0.009 in. (0.18 – 0.23 mm)
8