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Document: - page 6 (Black)
Screen angle and frequency: 45.0000, 150.0000
6
ENGINE INFORMATION
1. Carburetor
2. Air cleaner
3. Rope handle
4. Finger guard
5. Oil fill/Dipstick
6. Engine Model Type Code
xxxxx xxxx xx xxxxxxxx
7. Muffler/(Muffler guard, if equipped)/
(Spark arrester, if equipped)
8. Spark plug wire
9. Governor control lever
10. Primer bulb
11. Fuel tank
12. Fuel fill
13. Flywheel
4
3
6
7
5
1
2
11
9
12
10
8
13
GENERAL INFORMATION
This is a single cylinder, L-head, air-cooled engine. It is a
low emissions engine.
MODEL SERIES 90000
Bore 2-9/16 in. (65.09 mm). . . . . . . . . . . . . . . . . . . . . . . . . .
Stroke 1-3/4 in. (44.45 mm). . . . . . . . . . . . . . . . . . . . . . . . .
Displacement 9.02 cu. in. (147.8 cc). . . . . . . . . . . . . . . . . .
MODEL SERIES 100000
Bore 2-9/16 in. (65.09 mm). . . . . . . . . . . . . . . . . . . . . . . . . .
Stroke 1-7/8 in. (47.63 mm). . . . . . . . . . . . . . . . . . . . . . . . .
Displacement 9.67 cu. in. (158.6 cc). . . . . . . . . . . . . . . . . .
TUNE-UP SPECIFICATIONS
Armature air gap 0.006 – 0.010 in. (0.15 – 0.25 mm). . .
Spark plug gap 0.030 in. (0.76 mm). . . . . . . . . . . . . . . . . .
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 0.005 – 0.007 in. (0.13 – 0.18 mm). . . . . . . . . . . . .
Exhaust 0.007 – 0.009 in. (0.18 – 0.23 mm). . . . . . . . . . .
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°.