'Champion spark plugs or equivalent.
just below
oil ring groove and at right angles
to
piston pin
limits combination
of I.D.
and
O.D.
measurements.
HORSEPOWER (Maximum
RPM)
Engine Model
23
RH-10
18
K482
24
RCJ-8
20
K532
Ta ppel
Intake
CYLINDER HEAD
Service Replacement Sires
Thrust Face
Max. Out of Flatness
New
Maximum
Wear
Spark
Plug
Battery
Magneto
Gaseous Fuels
,34375
3.491
Thrust Face To Bore
Clearance
Nominal Point Gap
3.691
Ring
End Gap
3.238
New Bore
Used Bore
(Max.)
3.363
Max. Ring Side Clearance
Outside Diameter
Guide Reamer Size
,006