I ENGINE INFORMATION
1. Carburetor
2. Air cleaner
3. Rope handle
4. Finger guard
5. Oil fill/Dipstick
6. Enoine Model Type Code
XXXXX XXXX XX XXXXXXXX
7. Muffled(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
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°.
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