Page 2 - Hot Parts can cause severe burns.; Electrical Shock can cause injury.; CAUTION; WARNING; can; CAUTION; will; NOTE
2 Explosive Fuel can cause fires andsevere burns. Do not fill the fuel tank while theengine is hot or running. WARNING Explosive Fuel! Gasoline is extremely flammable and itsvapors can explode if ignited. Storegasoline only in approved containers,in well ventilated, unoccupiedbuildings, away from sp...
Page 3 - Before working on the engine or; Congratulations –; reliability under all operating conditions.; Lethal Exhaust Gases!
3 Safety Precautions (Cont.) Accidental Starts can cause severeinjury or death. Disconnect and ground spark plugleads before servicing. WARNING Carbon Monoxide can cause severenausea, fainting or death. Avoid inhaling exhaust fumes, andnever run the engine in a closedbuilding or confined area. WARNI...
Page 5 - Fuel Recommendations; General Recommendations; Do not add oil to the gasoline.; Fuel Type; unleaded; be used on EFI engines,; Gasoline/Alcohol blends; Oil Recommendations; Oil Type; Use high quality detergent oil of
5 Refer to Maintenance Instructions beginning onpage 8 for detailed oil check, oil change, and oil filterchange procedures. Fuel Recommendations WARNING: Explosive Fuel! Gasoline is extremely flammable and its vapors can explodeif ignited. Store gasoline only in approved containers, inwell ventilate...
Page 6 - Engine Identification Numbers; Specification, and Serial Numbers; Model Designation; Suffix; Operating Instructions
6 Engine Identification Numbers When ordering parts, or in any communicationinvolving an engine, always give the Model, Specification, and Serial Numbers of the engine. The engine identification numbers appear on a decalaffixed to the engine shrouding. Include letter suffixes, ifthere are any. Recor...
Page 7 - Cold Weather Starting Hints; Starting; Carbureted Engines Only:
7 • Check that any clutches or transmissions are disengaged or placed in neutral. This is especiallyimportant on equipment with hydrostatic drive. Theshift lever must be exactly in neutral to preventresistance which could keep the engine fromstarting. WARNING: Lethal Exhaust Gases! Engine exhaust ga...
Page 8 - Maintenance Instructions; Before working on the engine or equipment,; Stopping; slow; Battery; Operating; Angle of Operation
8 Cooling NOTE: If debris builds up on the grass screen or other cooling air intake areas, stop the engineimmediately and clean. Operating the enginewith blocked or dirty air intake and coolingareas can cause extensive damage due tooverheating. WARNING: Hot Parts! Engine components can get extremely...
Page 9 - Check Oil Level; BEFORE EACH USE; Oil SentryTM; BEFORE; Maintenance Schedule
9 • Replace fuel filter 1 (EFI engines). Daily or Before Starting Engine Maintenance Required Frequency • Fill fuel tank.• Check oil level.• Check air cleaner for dirty 1 , loose, or damaged parts. • Check air intake and cooling areas, clean as necessary 1 . • Service precleaner element 1 . Every 25...
Page 10 - turn; Change Oil and Filter, Service Oil Cooler; at least every other oil change
10 Oil Filter Oil Drain Plug Oil Cooler Replace the oil filter as follows: 1. Drain the oil from the engine crankcase. 2. Allow the oil filter to drain. 3. Before removing the oil filter, clean the area around the oil filter to keep dirt and debris out ofthe engine. Remove the old filter. Wipe off t...
Page 11 - Service Precleaner and Air Cleaner Element
11 Figure 11. Air Cleaner System Components. Check the air cleaner daily or before starting the engine . Check for a buildup of dirt and debris around the air cleaner system. Keep this area clean. Also checkfor loose or damaged components. Replace all bent ordamaged air cleaner components. NOTE: Ope...
Page 12 - Heavy-Duty Air Cleaner; To Service
12 MainElement InnerElement DustEjectorValve 2. Pull the air cleaner element out of the housing. See Figure 12. Service Paper Element Every 100 hours of operation (more often under extremely dusty or dirty conditions) replace the paperelement. 1. Loosen the cover retaining knob and remove the cover....
Page 13 - Battery Charging; Fuel System; Fuel Filter; operating hours; Ignition System; Carbureted Engines -; Check Spark Plugs; Wire Gauge
13 Figure 14. Servicing Spark Plug. 4. Reinstall the spark plug into the cylinder head. Torque the spark plug to 24.4-29.8 N·m (18-22 ft. lb.) . Battery Charging WARNING: Explosive Gas! Batteries produce explosive hydrogen gas while being charged.To prevent a fire or explosion, charge batteries only...
Page 14 - Troubleshooting
14 Carburetor Troubleshooting andAdjustments Engines in this series use either a one- or two-barrelcarburetor depending on model, and may also beequipped with a Governed Idle System. Specificadjustment procedures are provided based on themodel and carburetor involved. If the engine isequipped with a...
Page 15 - Adjust Carburetor; Low Idle Speed Setting:
15 The system requires an additional procedure forsetting the idle speed. If speed adjustments arerequired proceed as follows. 1. Make any necessary speed or control adjustments following the appropriate instructions covered inthis section. 2. Move the throttle control to the idle position. Hold the...
Page 17 - Adjustment – EFI Throttle Body; idle; Do not
17 Troubleshooting If the MIL comes on, or the engine becomes hard tostart, runs roughly, or stalls at low idle speed, initialchecks should be made in the following areas: • Make sure the fuel tank is filled with clean, fresh gasoline, and shut-off valve (if so equipped) isopened completely. • Make ...
Page 18 - Always insist on genuine Kohler parts.; Major Repair
18 Specifications Model: ..................................................................... CH18/CH620 ............... CH20/CH640 ............... CH23/CH680Bore: ............................................ mm (in.) ........... 77 (3.03) ....................... 77 (3.03) ....................... 8...
Page 19 - LIMITED 2 YEAR COMMAND ENGINE WARRANTY; FEDERAL AND CALIFORNIA EMISSION CONTROL SYSTEMS
19 LIMITED 2 YEAR COMMAND ENGINE WARRANTY Kohler Co. warrants to the original consumer that each new COMMAND engine sold by Kohler Co. will be free from manufacturingdefects in materials or workmanship in normal service for a period of two (2) years from date of purchase, provided it is operated and...