Service and Repairs

94
Reassembly
KohlerEngines.com 17 690 01 Rev. L
Install Connecting Rod with Piston and Rings
Connecting Rod Details
A
C
D
A
B
A Match Marks B Off set
C Dipper D Oil Hole
1. Make sure these are correct before installing.
a. Locating mark on piston is down.
b. Connecting rod off set is down and oil hole is in 4
o’clock position shown. Match marks should align
as shown with dipper down.
2. If piston rings were removed, see Disassembly/
Inspection and Service procedure to install rings.
3. Lubricate cylinder bore, piston, piston pin, and piston
rings with engine oil. Compress rings using a piston
ring compressor.
4. Lubricate crankshaft journal and connecting rod
bearing surfaces with engine oil.
5. Ensure ▼ stamping on piston is facing down toward
base of engine. Use a hammer handle or rounded
wood dowel and gently tap piston into cylinder as
shown. Be careful oil ring rails do not spring free
between bottom of ring compressor and top of
cylinder.
6. Install connecting rod cap to connecting rod so
dipper is down, and match marks are aligned.
7. Torque both screws in increments to:
CH245, CH255, CH260, CH270 12.4 N·m
(111 in. lb.)
CH395, CH440 20 N·m (177 in. lb.)
4. Pull governor gear up until it makes contact with
ring, then place pin in cup, retaining rim with
weights.
5. Push pin down, snapping ring into shaft groove.
6. Pull up slightly on governor gear to ensure assembly
is installed correctly.
7. Install one thrust washer onto governor cross shaft
and slide shaft up through inside of crankcase.
8. Install second fl at washer onto shaft. Position shaft
so fl at index end of shaft faces to left (9 o'clock
position) and insert hitch pin from PTO side.
Install Oil Sentry
™
System
1. Mount Oil Sentry
™
fl oat switch into crankcase
housing using two M6x18 screws and torque to
8 N·m (71 in. lb.).
2. Route wire lead grommet assembly through
crankshaft housing.
3. Install nut on grommet assembly external stud and
torque to 10 N·m (89 in. lb.).
Install Crankshaft
Carefully slide fl ywheel end of crankshaft through main
ball bearing and seal.