Kohler K9J Service Manual page 121

Figure 12-10. Measuring Balance Gear End Play.
INSTALL CRANKSHAFT
On Engines Without Balance Gears
1 . Lubricate the crankshaft rear bearing surface.
Insert the crankshaft through the rear bearing.
NOTE: If the crankshaft and bearing plate have not
been separated, position the fuel line and wiring
harness between the bearing plate and crankcase
before pressing the crankshaft all the way in.
2. Align the primary timing mark on crankshaft
with the timing mark on camshaft. Refer to
Figure 12-11 . Press the crankshaft into rear
bearing. Make sure the camshaft and crank-
shaft gears mesh and that the timing marks
remain aligned while pressing.
On Engines With Balance Gears
K-Series engines have two styles of balance gear
assemblies. To provide improved vibration reduc-
ing characteristics, redesigned balance gear as-
semblies are being used in the K241 , K301 , K321
and K341 single cylinder engines. These new bal-
NEW
ance gear assemblies (Part No. 45 043 03) are
being used in engines with a Serial No. of
1613600013 and later, and for service replace-
ment. Figure 12-12 shows the physical differences
between the old and new style gear assemblies.
Figure 12-11. Aligning Crankshaft And
Camshaft Timing Marks.
Because of the physical differences of the gear,
new procedures for installing the crankshaft, and
timing the balance gears, crankshaft, and cam-
shaft are required.
The following "INSTALL CRANKSHAFT" proce-
dures are broken down into four sections;
1 A) OLD STYLE BALANCE GEAR ASSEMBLY -
WITH A BALANCE GEAR TIMING TOOL
1 B) OLD STYLE BALANCE GEAR ASSEMBLY -
WITHOUT A BALANCE GEAR TIMING TOOL
2A) NEW STYLE BALANCE GEAR ASSEMBLY -
WITH A BALANCE GEAR TIMING TOOL
2B) NEW STYLE BALANCE GEAR ASSEMBLY -
WITHOUT A BALANCE GEAR TIMING TOOL
METHOD
OLD
Figure 12-12. Old And New Style Balance Gear Assemblies.
12.4