Kohler Command Pro EFI ECH940 Service Manual page 66

Disassembly/Inspection and Service
Clean all parts thoroughly as engine is disassembled.
Only clean parts can be accurately inspected
and gauged for wear or damage. There are many
commercially available cleaners that will quickly remove
grease, oil and grime from engine parts. When such a
cleaner is used, follow manufacturer's instructions and
safety precautions carefully.
Make sure all traces of cleaner are removed before
engine is reassembled and placed into operation. Even
small amounts of these cleaners can quickly break down
lubricating properties of engine oil.
NOTE: This disassembly sequence removes some
components in subassemblies to enable
technician to perform internal engine servicing.
Do not disconnect every EFI component.
Disconnect Spark Plug Leads
NOTE: Pull on boot only, to prevent damage to spark
plug lead.
1. Disconnect leads from spark plugs.
2. Shut off fuel supply.
Drain Oil from Crankcase and Remove Oil Filter
1. Clean oil fi lter and housing area. Remove and
discard oil fi lter.
2. Remove dipstick and 1 oil drain plug.
3. Allow ample time for oil to drain from crankcase.
Remove Muffl er (if equipped)
NOTE: Unless oxygen sensor is damaged or
malfunctioning, disassembly from muffl er is
unnecessary.
1. Disconnect oxygen sensor connector from wire
harness.
2. Remove exhaust system and attaching hardware
from engine. On engines equipped with a port liner,
remove it now.
Remove Cylinder Shrouds and Blower Housing
1. Remove front mounting screw and loosen shoulder
screws on each side. Remove cylinder shrouds.
2. Remove top mounting screws, loosen bottom
screws, and separate blower housing from backing
shroud. Fixed guard (if equipped) may be removed
with blower housing.
Remove Electric Starter Motor
1. Disconnect leads from starter.
2. Remove screws and starter.
66
Remove Control Panel (if equipped)
NOTE: Unless control panel is damaged or
malfunctioning, disassembly from engine is
unnecessary.
1. Remove three screws securing control panel.
2. Disconnect 5-pin connector and ground terminal
from key switch.
3. After noting where yellow, green, and tan wires are
connected, carefully disconnect wire connectors and
remove control panel.
Remove Air Cleaner Assembly
NOTE: Low-profi le air cleaner is removed same way as
heavy-duty air cleaner.
1. Disconnect breather hose from air cleaner.
2. Remove top air cleaner body support screws.
3. Remove air cleaner elbow nuts.
4. Remove air cleaner as an assembly from engine.
Remove Control Bracket and Governor Springs
NOTE: Unless ECU is damaged or malfunctioning,
disassembly from control bracket is
unnecessary.
1. Unhook governed idle and governor springs from
controls on control bracket and governor lever. Note
color, location, and position of each.
2. Unhook bushing, remove throttle linkage and linkage
spring from governor lever, and remove bushing.
3. Disconnect Black and Grey electrical connectors
from ECU.
4. Remove two screws and lift off control bracket.
5. Remove nuts from vibration stud isolators securing
ECU module to control bracket and remove ECU
module.
6. Loosen nut and remove governor lever from cross
shaft.
KohlerEngines.com 62 690 13 Rev. A