Kohler CH640 Diesel Engine 20.5-HP

The Kohler CH640 is a 20.5 HP gasoline engine, not diesel. It is a 4-stroke, OHV, V-twin engine with a 674cc displacement, 674 cc, cast iron cylinder liners, and an aluminum block. Key features include a 12-volt electric start, 15-amp charging system, pressure lubrication, and a mechanical governor

* Crankshaft-1 1/8 in. (28.5 mm)
* Diameter x 4.0 in. (102 mm) PTO Length
* Overhead Valve Design
* Hydraulic Valve Lifters
* Cast-Iron Cylinder Liners
* Electronic Ignition
* Closed Breather System
* Stellite Exhaust Valve
* Full Pressure Lubrication
* Large Capacity In-Line Fuel Filter
* Easy Access Valve Cover Oil Fill-Yellow
* Oil Level Dipstick-Yellow
* Large Capacity Oil Filter, Dual Oil Drain
* Oil Sentry (Switch Installed and Wired but Unconnected)
* Variable Speed Governor
* High Performance Carburetor
* Fuel Shutdown Solenoid, Smart-Choke Carburetor
* Mechanical Fuel Pump
* High Performance Spark Plugs
* 12 Volt Solenoid Shift Starter
* 20 Amp Alternator, Regulated
* Engine Controls-Key Switch, Throttle and Choke Controls
* Anti-Icing Features with Starter Side Exhaust System
* Round Air Cleaner with Snorkel to Starter Side Muffler
* Fixed Grass Screen Guard
* 3/16 in Evaporative emissions connection
* Crankshaft-1.125 in. (28.5 mm) Diameter x 4.0 in. (102 mm) PTO Length, 0.25 in. (6 mm) Keyway, Drilled and Tapped 1.5 in. (38 mm) Deep, 7/16-20 UNF
* PTO Face-5.625 in. (143 mm) Diameter, (4 Holes) 3/8-16 x 0.67 in. (17 mm) Deep, 7.75 in. (197 mm) Diameter, (4 Holes) 7/16-14 x 0.83 in. (21 mm) Deep
* 7 in. (178 mm) Diameter Pilot