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Basic Specs for single cylinder, aluminum block, Overhead Valve engines. (Except Intek) Aluminum blocks with steel sleeves are included here.


Basic Model
Series
Idle
Speed
Armature
Air Gap
Valve Clearance Torque
Specs
Intake Exhaust Flywheel
Nut
Cylinder
Head
Conn
Rod
85400 -==- .012"
.020"
.002"
.004"
.002"
.004"
45 ft
lbs
220
in lbs
90
in lbs
97700
99700
-==- .006"
.012"
.005"
.007"
.005"
.007"
60 ft
lbs
160
in lbs
100
in lbs
104700 -==- .008"
.012"
.003"
.005"
.003"
.005"
65 ft
lbs
165
in lbs
90
in lbs
115400
117400
-==- .012"
.020"
.002"
.004"
.002"
.004"
45 ft
lbs
220
in lbs
90
in lbs
138400 -==- .012"
.020"
.005"
.008"
.005"
.008"
45 ft
lbs
230
in lbs
90
in lbs
161400 -==- .008"
.012"
.003"
.005"
.003"
.005"
65 ft
lbs
165
in lbs
200
in lbs
185400 -==- .012"
.020"
.002"
.004"
.002"
.004"
60 ft
lbs
300
in lbs
175
in lbs
235400
245400
-==- .008"
.012"
.004"
.006"
.004"
.006"
60 ft
lbs
420
in lbs
175
in lbs
260700
261700
-==- .008"
.012"
.003"
.005"
.003"
.005"
125 ft
lbs
225
in lbs
200
in lbs
28N700
28P700
28Q700
28S700
28U700
28W700
287700
-==- .010"
.014"
.003"
.005"
.005"
.007"
65 ft
lbs
220
in lbs
See
Manual
in lbs
310700
312700
-==- .010"
.014"
.003"
.005"
.005"
.007"
100 ft
lbs
220
in lbs
150
in lbs


The Lawn Mower Repair Man's "Front Page"
Go to Single Cylinder Flathead Specs
Go to Intek Single Cylinder OHV Specs
Go to Flathead Twin Specs
Go to Vanguard V-Twin OHV Specs