Kohler Command PRO EFI ECH749 [144/180] Disassembly inspection and service

Kohler Command PRO EFI ECH749 [144/180] Disassembly inspection and service
Remove Outer Baffl es and Blower Housing
NOTE: Some engines may have 2 fuses mounted to a
bracket above ECU, and a third in-line fuse by
rectifi er-regulator.
1. Disconnect plug from rectifi er-regulator (standard
charging system).
2. Remove silver or green plated rectifi er-regulator
ground strap/ground lead screw fastened to blower
housing then crankcase/backing plate. Rectifi er-
regulator does not have to be detached from blower
housing.
3. Disconnect 3 fuse connectors on outer baffl e and
allow them to hang (standard charging system).
4. Remove screws securing outer baffl es. Note location
of any lifting strap and position of short screws for
reassembly. Coil and any hoses may remain
attached to baffl e after being unplugged or
disconnected.
5. Remove outer baffl es.
On ETB ECH EFI engines, open clip on #1 side
ignition coil screw and remove wiring harness;
remove evap connector secured to #2 side baffl e.
6. Remove remaining screws securing blower housing.
Remove blower housing.
Remove Oil Sentry
NOTE: This is optional. Removing Oil Sentry
is not
required to remove breather cover.
1. Disconnect lead from Oil Sentry
switch.
2. Remove Oil Sentry
switch from breather cover.
Remove Engine Temperature Sensor (ETB ECH EFI
& ECH EFI)
NOTE: Unless engine temperature sensor is damaged
or malfunctioning, disassembly from breather
cover is unnecessary.
1. Disconnect connector from engine temperature
sensor.
2. Remove engine temperature sensor from breather
cover.
3. If still connected, remove breather hose from
breather cover.
Remove Inner Baffl es and Breather Cover
1. Remove screws securing inner baffl es to breather
cover/crankcase.
2. Remove inner (valley) baffl es. On ETB ECH EFI
engines, unplug wiring harness from #1 side baffl e.
3. Remove remaining screws from breather cover.
4. Pry under protruding edge of breather cover with a
screwdriver to break gasket seal. Do not pry on
sealing surfaces as it could cause damage resulting
in leaks.
5. Remove breather cover and gasket.
Disassembly/Inspection and Service
144 24 690 01 Rev. OKohlerEngines.com

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