Horsepower 21.0
Crankshaft Orientation: Vertical Shaft
Twin Cylinder OHV with Cast Iron Sleeve
Crankshaft Diameter: 25.4mm (1 inch)
Crankshaft Length: 80mm (3.15 inches)
Auxiliary PTO: No
Gear Reduction: No
Charging System: 13 Amp
Cooling System: Air Cooled
Oil Filter: Yes
Starter Type: 12 Vt. Electric
Fuel Pump: Yes

Standard features include V-twin overhead valve design, pulse type fuel pump, pressurized lubrication with oil filter cast iron cylinder liner, electronic ignition, dual element air filter, mechanical governor, automatic compression release, internally vented carburetor.
 
Application Notes:
Replaces FH641V-S16 used on Encore products
Replaces FH641V-S08 used on eXmark products
Replaces FH641V-S19 used on eXmark products
Replaces FH641V-S10 used on Husqvarna products
Replaces FH641V-S28-R used on Husqvarna products
Replaces  FH641V-S12 used on Ransomes (Bobcat) products
Replaces  FH641V-S17 used on Snapper products