Kohler Command CH620- Manuals

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...

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...

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...

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...

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...

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...

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....

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...

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...

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...

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 ...

18 Specifications Model: ..................................................................... CH18/CH620 ............... CH20/CH640 ............... CH23/CH680Bore: ............................................ mm (in.) ........... 77 (3.03) ....................... 77 (3.03) ....................... 8...

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...