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273v29,35 - page 6 (Black)
Screen angle and frequency: 45.0000, 150.0000
6
ENGINE PARTS
1. Air cleaner
2. Carburetor
3. Rewind starter (if equipped)
4. Blower housing
5. Oil filter (if equipped)
6. Spark plug wire
7. Oil drain plug
8. Oil fill/Dipstick
9. Rotating screen
10. Emission label
11. Engine Model Type Code
xxxxxx xxxx xx xxxxxxxx
12. Fuel pump
13. Exhaust manifold
14. 12V electric starter
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6
3
1
2
4
8
7
9
10
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GENERAL INFORMATION
ENGINE MODEL
This is a twin cylinder, overhead valve (OHV), air-cooled
engine. It is a low emissions engine.
In the state of California, Model Series 290000, 300000 and
350000 engines are certified by the California Air Re-
sources Board to meet emissions standards for 250 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 290000 and 300000
Bore 2.68 in. (68 mm). . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stroke 2.60 in. (66 mm). . . . . . . . . . . . . . . . . . . . . . . . . . . .
Displacement 29.3 cu. in. (480 cc). . . . . . . . . . . . . . . . . . .
MODEL SERIES 350000
Bore 2.83 in. (72 mm). . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stroke 2.76 in. (70 mm). . . . . . . . . . . . . . . . . . . . . . . . . . . .
Displacement 34.7 cu. in. (570 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°.
THE INTERNATIONAL SYMBOLS USED
ON THE ENGINE OR
IN THIS MANUAL INCLUDE:
On Off
Fuel Shutoff
Read Owner’s
Manual
Stop
FuelChoke
Safety Alert
Oil
TUNE-UP SPECIFICATIONS
Armature air gap 0.008 – 0.012 in. (0.20 – 0.30 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 272144.
Intake 0.004 – 0.006 in. (0.10 – 0.15 mm). . . . . . . . . . . . .
Exhaust 0.004 – 0.006 in. (0.10 – 0.15 mm). . . . . . . . . . .