Service Manual

Workman HD
Page 5 − 14
Kohler Air Cooled Gasoline Engine
Flywheel and Pilot Bearing Inspection
1. Inspect flywheel surface for stepped wear, streaking
or seizure and replace if necessary. Check flywheel run-
out and replace if runout exceeds 0.005 in. (0.13 mm).
2. Check pilot bearing for smooth rolling and noise.
Check (sealed) bearing for grease leakage. Replace
bearing if necessary. Remove pilot bearing from fly-
wheel by backing out socket head screw that attaches
flywheel to crankshaft. Do not reuse bearing if it has
been removed.
Engine Installation (Fig. 6)
1. Install flywheel and/or pilot bearing if removed.
Torque socket head screw from 35 to 40 ft−lb (48 to 55
N−m) to secure flywheel to engine crankshaft.
2. If pressure plate and clutch disc were removed from
engine, see Clutch Service in Chapter 6 − Drive Train in
this manual.
3. If hydraulic pump drive pulley was removed from en-
gine, apply anti−seize lubricant on engine stub shaft be-
fore installing pulley.
4. Place two (2) dowel pins in bell housing.
5. Use lift or hoist to install engine to chassis. One per-
son should operate hoist and a second person should
help guide engine to machine. Align splines on transaxle
input shaft and clutch while moving engine to bell hous-
ing on transaxle.
6. Secure bell housing to clutch adapter on engine with
six (6) cap screws and two (2) harness brackets.
7. Secure engine to engine mount with four (4) flange
nuts and flange head screws.
8. Connect choke cable to choke lever on engine (Fig.
8).
9. Connect accelerator cable ball joint to throttle lever
on engine (Fig. 8). Secure cable to throttle bracket with
jam nuts.
10.Connect wire harness connectors to engine compo-
nents.
11.Connect fuel hose to fuel pump on engine and se-
cure with hose clamp.
12.Secure positive cable and fusible link harness to
starter solenoid stud on engine.
13.Install the muffler and exhaust manifold (see Ex-
haust System Installation in this section).
14.Install a new engine oil filter. Fill engine with the cor-
rect oil.
15.Install hydraulic pump drive belt to pump and engine
pulleys. Adjust belt tension (see vehicle Operator’s
Manual).
16.Connect positive (+) and then negative (−) battery
cables to the battery.
17.Check operation of accelerator and choke cables.
18.Lower bed or install bed or attachment(s).