CH18S Command Series
18.0 HP - 1.125" x 4" crankshaft, electric start, 15 amp stator, with fuel pump, no muffler, no tank

CH20S Command Series
20.0 HP - 1 1/8" x 70.8 mm crankshaft, electric start, 15 amp stator, with fuel pump, no muffler, no tank
Fits: Walker

CH640 Command Series
20.0 HP - 1" x 2" crankshaft, electric start, 15 amp stator, with fuel pump, no muffler, no tank, includes flywheel stub shaft
Fits: Toro Dingo Skid Steer

CH18S Command Series
18.0 HP - 1" x 2 25/32" crankshaft, electric start, 15 amp stator, with fuel pump, no muffler, no tank
Fits: Cub Cadet

CH18S Command Series
18.0 HP - Stub crankshaft, electric start, 15 amp stator, with fuel pump, no muffler, no tank, air cleaner adapter only
Fits: Walker

CH18S Command Series
18.0 HP - Stub crankshaft, electric start, 15 amp stator, remote controls, with fuel pump, no muffler, Walker style air cleaner adaptor
Fits: Walker ZTR

CH20S Command Series 20.0 HP - 1-1/8" x 2-25/32" crankshaft, electric start, 15 amp stator, with fuel pump, no muffler, no tank
Fits: Select Simplicity Models

CH20S Command Series
20.0 HP - 1-1/8" x 2-25/32" crankshaft, electric start, 25 amp stator, with fuel pump, no muffler, with flywheel stub shaft
Fits: John Deere

CH20S Command Series
20.0 HP - Stub crankshaft, electric start, 15 amp stator, with fuel pump, no muffler, with flywheel stub shaft
Fits: Walker (MT20)

CH620 Command Series
18.0 HP - 1"x 3" crankshaft, electric start, 15 amp stator, with keyswitch & engine mounted controls, with fuel pump, no muffler

CH640 Command Series
20.0 HP - 1" x 2" crankshaft, electric start, 15 amp stator, with fuel pump, no muffler, no tank
Fits: Toro Dingo Skid Steer LD

CH620 BASIC, Command Series 18.0 HP - 1.125" x 4" crankshaft, electric start, 15 amp stator, with key switch & engine mounted controls, with fuel pump, no muffler

CH20S Command Series, 1 7/16" x 4 5/16" crankshaft, electric start, 15 amp stator, with fuel pump, with muffler, with front stub shaft
Fits: Onan Replacement for JD 316, 318 and 420

CH20S Command Series
20.0 HP - Stub crankshaft, electric start, 15 amp stator, with fuel pump, no muffler, no tank
Fits: Terramite Backhoe

CH640 MORIDGE MFG CH20S Command Series
20.0 HP - 1.125" x 3.385" crankshaft, electric start, 15 amp stator, with fuel pump, with canister muffler, no tank
Fits: Grasshopper/Moridge ZTR

CH620 MORIDGE - ZTR, CH18S Command Series
1"x 3" crankshaft, electric start, 15 amp stator, with fuel pump, with cannister muffler, no tank
Fits: Grasshopper/Moridge ZTR

CH640 MTD UTILITY VEHICLE

CH640S Command Series, 1.437" x 4.42" crankshaft, electric start, 15 amp stator, with key switch & engine mounted controls, with fuel pump, no muffler

CH620 (18) BASIC, 18.0 HP - 1.125" x 4" crankshaft, electric start, 15 amp stator, with fuel pump, no muffler, no tank

CH620 BASIC, 1 1/8" x 4" shaft, Engine mounted Controls and Key Switch, .25" key way, 7/16-20 thread shaft bolt, 106 lbs

CH640S 1.125", CH20S Command Series
20.0 HP - 1.125" x 4" crankshaft, electric start, 15 amp stator, with keyswitch & engine mounted controls, with fuel pump, no muffler

CH640 BASIC, CH20S Command Series
20.0 HP - 1.437" x 4.453" crankshaft, electric start, 15 amp stator, with key switch & engine mounted controls, with fuel pump

CH620S BASIC 18.0 HP - 1"x 3" crankshaft, electric start, 15 amp stator, with key switch & engine mounted controls, with fuel pump, no muffler

CH18S Command Series
18.0 HP - 2-7/8" x 1-1/8" crankshaft, electric start, 15 amp stator, with fuel pump, no muffler, no tank
Fits: Select Simplicity Models

CH640 BASIC NO PANEL, CH20S Command Series
20.0 HP - 1.437" x 4.42" crankshaft, electric start, 15 amp stator, with fuel pump, no muffler, no tank