User manual KOHLER K91

[. . . ] OWNER's MAN UAL MODELS K91 I (4 hP) Kl6l, &Kl81 (7 hP) (8 hP) operating & maintenance instructions CONGRATULATIONS-You have selected a fine four-cycle engine. Kohler designs strength and on-the-job durability into each engine. . . making a Kohler engine dependable. . . dependability you can count on. n long-life Parts subject to the most wear and tear (like cylinders, crankshafts, and camshafts) are made from precision-formulated castiron. . . and because the cast iron cylinders can be rebored, these engines can last even longer. Kohler engines are easy to service, all routine service air filter, carburetor--are easily and quickly accessible. parts--points, condenser, spark plug, n 0 Every Kohler engine is backed by a worldwide network of over 10, 000 distributors and dealers. [. . . ] Clean Cooling Fins and External Surfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace Air Cleaner Element' . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Check Spark Plug Condition and Gap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Have Breaker Points Checked2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HavelgnitionTimingChecked2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ~H Have Valve and Tappet Clearance Checked2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HaveCylinderHeadsServiced2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Have Starter Motor Drive Serviced2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . `Perform these maintenance procedures more frequentlyunder extremely dusty, dirty conditions. `250 hours when leaded gasoline is used. A Frecwencv DAILY MILY DAILY 25Hm. 25Hf& 50Hlls, 50 Hrrr. 100 Hrs. 100 Herr. . . . 500 Hrs. . , 500 Hra. 5OOHrs? , 500 Hrs. ENGINE IDENTIFICATION ntak e ?en e / Oil Pan Retractable Starter Oil Drain 7 Precleaner Air Filter Plate Wing Nut SPARK PLUGS Every 100 hours of operation remove the spark plug, check condition and reset the gap, or replace with a new plug as necessary. Before removing the spark plug, clean the area around the base of the plug to keep dirt and debris out of the engine. Some grit could remain in the spark plug and enter the engine causing extensive wear and damage. 3. Check gap (0. 025") using a wire feeler gauge. Adjust the gap as necessary by carefully bending the ground electrode. lb. Wire 2. / CARBU. RETOR TRdUBLESHOOTlNG Kohler K91, K161 and K181 engines are equipped with one of two basic types of carburetors - Kohler or Walbro - fixed main jet or adjustable main jet. The carburetor is designed to deliver the correct fuelto-air mixture to the engine under all operating conditions. The main fuel and idle fuel needles on adjustable jet carburetors are set at the factory and normally do not require further adjustment. On fixed jet carburetors, the low idle fuel needle is also set at the factory and normally does not need further adjustment. The main fuel jet is calibrated and installed at the factory and is not adjustable*. *NOTE: Engines operating at attitudes above approximately 1830 m (6000 ft) may require a special "high altitude" main jet. AND ADJUSTMENTS Carburetor adjustments should be made on/y after engine has warmed up. Kohler Carburetor Adjustment 1. With the engine stopped, turn the fuel adjusting needles In (clockwise) until they bottom lightly. NOTE: The tips of the fuel adjusting needles are tapered to critical dimensions. Damage to the needles and seats in carburetor body will result if the needles are forced. adjusting needles out (counterclockwise) from lightly bottomed as follows: 1 KOHLER ADJ. 1 LOW IDLE 1 l-1/2 TURNS 1 l-l/2 TURNS 1 MAIN FUEL 1 2TURNS 1 3TURNS 2 TURNS . I I K91 K161 K181 TROUBLESHOOTING If engine troubles are experienced that appear to be caused by the carburetor, check the following areas before adjusting the carburetor. [. . . ] Run the , engine for 2-3 minutes to get stabilized fuel into the carburetor. To empty the system, run the engine until the tank and system are empty. 5. ENGINE IDENTIFICATION NUMBERS When ordering parts, or in any communication involving an engine, always give the Model, Specification, and Serial Numbers of the engine. The engine identification numbers appear on decal (or decals) affixed to the engine shrouding. NO. REFER TO OWNER'S MANUAL FOR OPERATlON/MAlNTENANCE INSTRUCTIONS AND SAFETY PRECAUTIONS. Remove the spark plug. [. . . ]