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Kohler Command OHV Horizontal Engine with Electric Start — 674cc, 1.125in. x 4in. Shaft, Model# PA-CH640-3205

Item# 44604
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Kohler Command OHV Horizontal Engine with Electric Start — 674cc, 1.125in. x 4in. Shaft, Model# PA-CH640-3205

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Only $1429.99
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  •  Hydraulic valve lifters are oil-pressurized, ensuring that push rods stay in constant contract with the rocker arms
  •  The valve train is virtually maintenance-free and requires no adjustment
  • Full-pressure lubrication delivers continuous lube to critical engine components, even at 25° angle of operation
  • Large capacity, in-line fuel filter provides extra protection against fuel line-clogging dirt particles
  •  Overhead valve technology provides greater volumetric efficiency and a higher compression ratio, providing more power, improved fuel economy, reduced oil consumption and better cooling
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Factory Shipped —
Estimated Delivery: 5 - 7 Business Days
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Not Available in Stores
 

Product Summary

This Kohler Command OHV Horizontal Engine with Electric Start gives you high power performance with overhead valve technology and a durable, long-life design with full-pressure lubrication. U.S.A.

What's Included
  •  (1) Engine

Features + Benefits

  •  Hydraulic valve lifters are oil-pressurized, ensuring that push rods stay in constant contract with the rocker arms
  •  The valve train is virtually maintenance-free and requires no adjustment
  • Full-pressure lubrication delivers continuous lube to critical engine components, even at 25° angle of operation
  • Large capacity, in-line fuel filter provides extra protection against fuel line-clogging dirt particles
  •  Overhead valve technology provides greater volumetric efficiency and a higher compression ratio, providing more power, improved fuel economy, reduced oil consumption and better cooling
  • Virtually no carbon buildup for reduced maintenance costs
  •  The variable speed mechanical governor promises smooth performance, regardless of application or fluctuating demands for power
  •  The Kohler Command® electronic ignition system generates a stronger spark at lower cranking speeds
  •  Easy maintenance, thanks to easy-access oil fill cap and dipstick handle and dual oil drains
  •  High-power performance, with high-performance spark plugs, a 15 Amp regulated alternator and a large in-line fuel filter
  • Reliable, long-life design with hardened crankshaft journals, high-efficiency fan and screen, large dual-element air filter with foam pre-cleaner, cast iron cylinder liners and a spin-on, full-flow oil filter
  •  Quiet, smooth operation thanks to an engineered material blower housing and a mechanical fuel pump
  •  CARB and EPA-emission certified
  •  Smart-Choke® carburetor
  •  Electronic ignition system
  •  Solenoid shift starter
Key Specs
Item# 44604
Brand Kohler Engines
Manufacturer's Warranty 3 Yr Consumer Limited
Ship Weight 106.0 lbs
Engine Displacement (cc) 674
Start Type Electric
Application Carpet cleaner, power washer, pump, construction equipment
Engine Type Air cooled
Torque (ft./lbs.) 35.7 (48.4 Nm) at 3,600 RPM
Displacement (cu. in.) 41.1
Shaft Output Horizontal
Crankshaft Hardened
Shaft Diameter (in.) 1 1/8
Shaft Length (in.) 4
Shaft Keyway (in.) 1/4
Shaft End Tapped (Diameter (in.)/Threads per inch) 1 1/2 in. deep x 7/16-20 UNF
Shaft Rotation (From PTO Shaft Side) Counterclockwise
PTO Height (in.) 6 1/8
Bearing Type Parent material
Cylinders (qty.) 2
Cylinder Bore Cast iron
Bore x Stroke (in.) 3 x 2.6
Compression Ratio 8.5:1
Cooling System Air cooled
Air Cleaner Type Dual element
Fuel Type Gasoline
Fuel Pump Mechanical
Fuel Filter In line
Oil Capacity (qt.) 2
Lubrication System Full pressure
Low Oil Alert Yes
Low Oil Shutdown Oil Sentry, shipped disconnected
Ignition System Electronic
Governor System Variable speed
Carburetor Smart Choke
Throttle Control Engine mounted
Choke Control Engine mounted
Max. RPM 3,600
Charging System Amps 15
Muffler Included No
Bolt Circle (in.) 5 5/8, 7 3/4, 7 pilot
Mounting Base L x W (in.) 7 1/4 x 3 1/2
Mounting Bolt Pattern L x W (in.) 7 1/4 x 3 1/2
Dimensions L x W x H (in.) 14 x 17 7/10 x 19
EPA/CARB Approval (California Air Resource Board) Yes

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Product Question + Answer
Replacement Parts
Call To Order: 1-800-657-0516

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Sat 7:00 AM - 3:00 PM (Central)

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Hide Similarities
Engine Displacement (cc)
674 674 674 725 747
Start Type
Electric Electric Electric Electric Electric
Application Utility vehicle, sand trap rake, grain auger, boring equipment, carpet cleaning machines, pressure washers and furnace vacs Utility, construction, grain augers and pressure washers Carpet cleaner, power washer, pump, construction equipment Stump grinders, construction equipment, grain augers Garden tractors, construction equipment, etc.
Engine Type Gasoline Gasoline Air cooled Gasoline Air
Torque (ft./lbs.)
35 (47.5 Nm) at 3,600 RPM 35.7 (48.4 Nm) at 3,600 RPM 35.7 (48.4 Nm) at 3,600 RPM 38.4 (52.1 Nm) at 3,600 RPM 41.2 (55.9 Nm) at 3,600 RPM
Displacement (cu. in.)
- 41.1 41.1 725 45 1/2
Shaft Output
Counterclockwise Horizontal Horizontal CCW CCW
Crankshaft Hardened Hardened Hardened Hardened Hardened
Shaft Diameter (in.) 1 1/8 1 7/16 1 1/8 1.437 1 7/16
Shaft Length (in.) 4 4 1/2 4 4.453 4 29/64
Shaft Keyway (in.)
1/4 0.0375 1/4 0.375 3/8
Shaft End Tapped (Diameter (in.)/Threads per inch) 7/16–20 UNF 1.5 x 5/8-18 UNF 1 1/2 in. deep x 7/16-20 UNF 5/8–18 UNF 5/8–18 UNF
Shaft Rotation (From PTO Shaft Side) Counterclockwise Counterclockwise Counterclockwise CCW CCW
PTO Height (in.)
6 1/8 6 1/8 6 1/8 6.125 6 1/8
Bearing Type
Parent material Parent material Parent material Sleeve PTO sleeve bearing
Cylinders (qty.)
2 2 2 2 2
Cylinder Bore
Cast iron sleeve Cast iron sleeve Cast iron Cast iron liner Cast iron
Bore x Stroke (in.)
3 x 2.6 3 x 2.77 3 x 2.6 3.3 x 2.6 3.3 x 2.7
Compression Ratio
8.5:1 8.5:1 8.5:1 9:1 9.4 : 1
Cooling System
Air cooled Air Air cooled Air Air
Air Cleaner Type
Dual element Dual element Dual element Dual element Dual element
Fuel Type Gasoline Gasoline Gasoline Gasoline Gas
Fuel Pump
Mechanical Mechanical Mechanical Mechanical Mechanical
Fuel Filter
Large capacity In line In line Yes Yes
Oil Capacity (qt.)
2 2 2 2 2
Lubrication System
Full pressure Full pressure Full pressure Full pressure Full pressure
Low Oil Alert
Yes Yes Yes Yes Yes
Low Oil Shutdown
Oil Sentry, shipped disconnected Oil Sentry, shipped disconnected Oil Sentry, shipped disconnected Yes Yes
Ignition System
Electronic Electronic Electronic Electronic Electronic
Governor System
Variable speed Variable speed Variable speed Mechanical Mechanical
Carburetor
Smart Choke Smart Choke Smart Choke Smart choke Smart choke
Throttle Control
Engine mounted Engine control - key switch, throttle, choke control Engine mounted Engine mounted w/keyswitch Remote
Choke Control
Smart Choke Smart Choke Engine mounted Engine mounted w/keyswitch Remote
Max. RPM
3,600 3,600 3,600 3,600 3,600
Charging System Amps 15 15 15 20A regulated 25
Muffler Included No Yes No No -
Auto Compression Release No No - - -
Bolt Circle (in.)
5 5/8, 7 3/4, 7 pilot 5 5/8, 7 3/4; 7 pilot 5 5/8, 7 3/4, 7 pilot 5.625 and 7.75, 7 in. pilot 5 5/8 and 7 3/4, 7 in. pilot
Mounting Base L x W (in.)
7 1/4 x 3 1/2 7 1/4 x 3 1/2 7 1/4 x 3 1/2 7.250 x 3.504 7 1/4 x 3.504
Mounting Bolt Pattern L x W (in.) 5 5/8, 7 3/4; 7 pilot 7 1/4 x 3 1/2 7 1/4 x 3 1/2 7.250 x 3.504 -
Dimensions L x W x H (in.)
14 x 17 7/10 x 19 17 4/5 x 17 7/10 x 14 1/10 14 x 17 7/10 x 19 14 x 17 3/4 x 19 14 x 17.7 x 22.4
EPA/CARB Approval (California Air Resource Board)
Yes Yes Yes Yes Yes