Table of Contents
Advertisement
INSTALL FUEL LINE AND WIRING
HARNESS
1 . Position the fuel line and wiring harness (if so
equipped) to crankcase.
2.
Adjust the fuel line and wiring harness to their
final positions just before securing the bearing
plate to the crankcase.
INSTALL BEARING PLATE
1 . The installation of bearing plate and gaskets
can be made considerably easier with the use
of two simple, easy to make alignment guides.
Using 2-1 /2" long bolts with the hexagon
heads removed and screwdriver slots cut in
the stem, screw the two headless bolts into
the cylinder block diagonally from each other.
Bolt thread sizes are 1/4-20 U.N.C. for
K91-K181; 3/8-16 U.N.C. for K241-K361.
2.
Lubricate the bearing surface of crankshaft
and bearing. Install the gasket, two or three
.005" shims (as required)*, and bearing plate
over studs.
*NOTE: Crankshaft end play is determined by the
thickness of the gasket and shims between crank-
case and bearing plate. Check the end play after
the bearing plate is installed.
3.
Install two hex cap sems screws and hand
tighten. Remove the locating studs, and install
the remaining two hex cap sems screws and
hand tighten.
4.
Tighten the screws evenly, drawing bearing plate
to crankcase. Torque K91-K181 to 115 in. lb.
Torque K241-K341 to 35ft. lb.
5.
Check crankshaft end play between the inner
bearing race and shoulder of crankshaft using
a flat feeler gauge. Refer to Figure 12-32.
Recommended total end play is:
K91
K161, K181
K241, K301, K321, K341
.004" /.023"
.002" /.023"
.003"/.020"
If measured end play is not within limits, remove
the bearing plate and, remove or install shims as
necessary.
NOTE: Crankshaft end play is especially critical on
gear reduction engines.
FRONT OIL SEAL LOCATION
ENGINE
MAGNETO
FLYWHEEL
3 AMP
10 AMP
BREAKERLESS
BATTERY
MODEL
ROTOR
MAGNETO
ALTERNATOR
ALTERNATOR
K91
1 /32"
1 /32"
----
----
----
1 /32"
K141
----
1/32" *
Full In
1 /32"
----
Full In
K161
1 /32"
1 /32"
----
1/32"
----
1 /32"
K181
1 /32"
1/32" *
1/32"
1 /32"
.486"
1 /32"
K241
----
1/2"
1/2"
1/2"
.73"
1 /2"
K241A
----
.52"
----
1/2"
.52"
.12"
K301
----
1/2"
1/2"
1/2"
.73"
1/2"
K301A
----
.52"
.52"
1/2"
.52"
.12"
K321
----
1 /2"
1/2"
1/2"
.73"
1/2"
K341
----
----
----
----
----
1/2"
* With sleeve bearing-drive seal in until it bottoms against shoulder.
REAR OIL SEAL DEPTH: 1/32" for K91 through K181, 1/8" for K241 through K341. Depth measured in
from crankcase face at PTO end.
Figure 12-32. Measuring Crankshaft End Play.
Figure 12-33. Installing Oil Seals Using Sleeves.
12.10
Advertisement
Table of Contents
