Kohler Aegis LH775 Owner's Manual

7
66 590 04 Rev. --
KohlerEngines.com
Cooling System
WARNING
Hot liquid can cause severe
burns.
Do not loosen radiator cap while
engine is operating or warm to
touch.
Liquid coolant can get extremely hot from
operation. Turning radiator cap when engine
is hot can allow steam and scalding liquid
to blow out and burn you severely. Shut off
machine. Only remove radiator cap when
cool enough to touch with bare hands. Slowly
loosen cap to fi rst stop to relieve pressure
before removing completely.
NOTE: Do not operate engine without fan and
cooling system functioning properly, or
engine damage will occur.
This engine is liquid-cooled, circulating a
mixture of ethylene glycol and water for
dependable operation. Maintaining correct
coolant level and cleaning any debris
accumulation from inlet screen and radiator
surfaces are critical to ensuring long life,
proper system performance, and preventing
overheating. A drive belt is designed and
constructed for this application. Do not use a
substitute belt. If belt is cracked, damaged,
or adequate tension does not exist, have
necessary servicing performed by a Kohler
authorized dealer.
Drain Cooling System
1. Ensure engine is cool. When radiator is cool
to touch, slowly loosen radiator cap to fi rst
stop and allow any pressure to bleed off.
Then loosen it fully and remove it.
Loosen/remove radiator drain plug and allow
coolant to drain.
2. If equipped, remove coolant drain plugs
located on each side of engine block. Drain
coolant into a suitable container. After
coolant has drained completely, apply pipe
sealant with Tefl on
®
(Loctite
®
PST
®
592™ or
equivalent), to threads and reinstall plugs.
Torque plugs to 325 in. lb. (36.7 N·m).
3. Remove overfl ow hose from reservoir.
Unhook inboard retainer and slide reservoir
out of supports. Pour out contents and wash
or clean as required. Dispose of all old
coolant in accordance with local ordinances.
4. Reinstall reservoir cap. Do not kink/pinch
hose.
5. Flush cooling system.
Air Cleaner
NOTE: Operating engine with loose or
damaged air cleaner components
could cause premature wear and
failure. Replace all bent or damaged
components.
NOTE: Paper element cannot be blown out
with compressed air.
1. Unhook retaining clips and remove end
cap(s).
2. Check and clean inlet screen (if equipped).
3. Pull air cleaner element out of housing and
replace. Check condition of inner element;
replace when dirty.
4. Check all parts for wear, cracks, or damage,
and that ejector area is clean.
5. Install new element(s).
6. Reinstall end cap(s) with dust ejector valve/
screen down; secure with retaining clips.
Breather Tube
Ensure both ends of breather tube are properly
connected.
Air Cooling
WARNING
Hot Parts can cause severe
burns.
Do not touch engine while
operating or just after stopping.
Never operate engine with heat shields or
guards removed.
NOTE: Operating engine with a restricted air
intake screen or radiator, damaged/
broken fan assembly, or missing fan
shroud will cause engine damage due
to over heating.
Proper cooling is essential. To prevent over
heating, clean screens, cooling fi ns, and other
external surfaces of engine. Avoid spraying
water at wiring harness or any electrical
components. See Maintenance Schedule.

Kohler Aegis LH775 Specifications

General

Brand	Kohler
Model	Aegis LH775
Category	Crankshaft
Language	English