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Document: - page 6 (Black)
Screen angle and frequency: 45.0000, 150.0000
6
ENGINE PARTS
1. Rope Handle for Rewind Starter
2. Oil Drain Plug
3. Choke Control Lever
4. Throttle Lever
5. Air Cleaner
6. Fuel Tank Cap
7. Spark Plug / Spark Plug Wire
8. Muffler
9. Engine Model Type Code
xxxxx xxxx xx xxxxxxxx
10. Stop Switch Wire (if equipped)
11. Oil Fill Cap
4
5
3
7
6
1
2
9
10
11
2
8
12. Fuel Fill
13. Throttle/Choke Control
14. Air Cleaner
15. Stop Switch
13
14
15
12
GENERAL INFORMATION
ENGINE MODEL
This is a single cylinder, L-head, air-cooled engine. It is a low emis-
sions 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. (148.0 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). . . . . . . . . . . . . . .
For practical operation, the horsepower loading should not ex-
ceed 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). Engine will operate
satisfactorily at an angle up to 15°.
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