LH630, LH640, LH685, LH690, LH755, LH775OWNER'S MANUALLIQUID-COOLEDHORIZONTAL CRANKSHAFTAEGIS®
106. Apply a thin film of clean oil to the rubber gasketon the new filter.7. Install the new oil filter to the filter adapter. Handtighten the filter
11Figure 11. Radiator Drain Plug Location.Figure 10. Coolant Levels on Reservoir.Draining Cooling System1. Stop the engine and allow it to cool suffic
12Figure 15. Removing End Cap.Figure 14. Air Cleaner Element and Inner Element.NOTE: Operating the engine with loose, damaged, ormissing air intake co
133. After the main element is removed, check thecondition of the inner element. It should bereplaced whenever it appears dirty, typicallyevery other
14Figure 20. Pulley and Drive Belt.4. The drive belt is designed and constructed forthis application. Do not use a substitute belt.Check the overall c
15EFI Engines: A special, high volume, high pressurefilter with greater filtration capabilities and internalsurface area is used. See Figure 24.NOTE:
16• Make sure the air cleaner element and precleanerare clean and properly secured.• Make sure the air intake screen, blower housing,and cooling surfa
17TroubleshootingIf the MIL comes on, or the engine becomes hard tostart, runs roughly, or stalls at low idle speed, initialchecks should be made in t
18SpecificationsModel: ... LH630/LH640 ... LH685/LH690 ... LH755 ...
19KOHLER CO.FEDERAL AND CALIFORNIA EMISSION CONTROL SYSTEMSLIMITED WARRANTYSMALL OFF-ROAD AND CLASS 1 LSI ENGINESThe U.S. Environmental Protection Age
2Safety PrecautionsWARNINGExplosive Fuel can cause fires andsevere burns.Do not fill the fuel tank while theengine is hot or running.WARNINGExplosive
(c) For warranty repairs, the engine must be presented to a Kohler Co. service center as soon as a problem exists. Call 1-800-544-2444 or accessour we
3Carbon Monoxide can causesevere nausea, fainting or death.Avoid inhaling exhaust fumes,and never run the engine in aclosed building or confined area.
4Figure 1. Typical Kohler Aegis® Carbureted Engine.Oil RecommendationsUsing the proper type and weight of oil in thecrankcase is extremely important.
5Figure 4. Oil Container Logo.Refer to Maintenance Instructions beginning onpage 8 for detailed oil check, oil change, and oil filterchange procedures
6EPACARBCategory C250 HoursModerate125 HoursCategory B500 HoursIntermediate250 HoursCategory A1000 HoursExtended500* HoursFigure 5. Engine Identificat
74. A warm battery has much more startingcapacity than a cold battery.5. Use fresh winter grade fuel. NOTE: Winter gradegasoline has higher volatility
8NOTE: Do not operate this engine continuously atangles exceeding 20° in any direction. Enginedamage could result from insufficientlubrication.Cooling
9Check Oil LevelThe importance of checking and maintaining theproper oil level in the crankcase cannot beoveremphasized. Check oil BEFORE EACH USE asf