5
ENGINE INFORMATION
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 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
°
.
