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Screen angle and frequency: 45.0000, 150.0000
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ENGINE INFORMATION
1. 12 V electric starter
2. Oil drain plug
3. Fuel fill
4. Fuel tank
5. Oil fill/Dipstick
6. Finger guard
7. Rope handle
8. Air cleaner
9. Engine Model Type Code
xxxxx xxxx xx xxxxxxxx
10. Muffler/(Muffler guard, if equipped)/
(Spark arrester, if equipped)
11. Spark plug wire
12. Rotating screen
13. Blower housing
14. Fuel filter
15. Carburetor
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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 190000 and 280000 series
engines covered in this manual are certified by the
California Air Resources Board to meet emissions stan-
dards 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 190000
Bore 3 in. (76.20 mm). . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stroke 2-3/4 in. (69.85 mm). . . . . . . . . . . . . . . . . . . . . . . . .
Displacement 19.44 cu. in. (318.5 cc). . . . . . . . . . . . . . . .
MODEL SERIES 280000
Bore 3-7/16 in. (87.31 mm). . . . . . . . . . . . . . . . . . . . . . . . . .
Stroke 3-1/16 in. (77.78 mm). . . . . . . . . . . . . . . . . . . . . . . .
Displacement 28.42 cu. in. (465.7 cc). . . . . . . . . . . . . . . .
Note: For practical operation, the horsepower loading should
not exceed 85% of rated horsepower. Engine power will de-
crease 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).
Engine will operate satisfactorily at an angle up to 15°.
TUNE-UP SPECIFICATIONS
Armature air gap 0.010 – 0.014 in. (0.25 – 0.36 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.
Model 190000 intake .005 – .007 in. (.13 – .18 mm). . . . .
Model 190000 exhaust .007 – .009 in. (.18 – .23 mm). . .
Model 280000 intake .005 – .007 in. (.13 – .18 mm). . . . .
Model 280000 exhaust .009 – .011 in. (.23 – .28 mm). . .
THE INTERNATIONAL SYMBOLS USED
ON THE ENGINE OR
IN THIS MANUAL INCLUDE:
On Off
Fuel Shutoff
Read Owner’s
Manual
Stop
Fuel
Choke
Safety Alert
Oil