 
Print Owners Manual:
Overview
Kohler 18 HP Command V-Twin Horizontal Engine. This gasoline-driven, 4-cycle, 18 HP engine has reliable features including: OHV, cast iron V-Twin cylinder liners, and aluminum block construction.
Kohler Command V-Twin OHV Horizontal Engine with Electric Start — 18 HP, PA-CH620-3050 Moridge /GRASSHOPPER - ZTR (remote engine controls)
Replaced by engine CH620-3129
PA-CH620-3050
CH620 MORIDGE/GRASSHOPPER - ZTR
18 HP Kohler Command Twin OHV
Crankshaft: (24014381-S) 1"(25.4) x 3"(76)
Drilled & Tapped 3/8-24 UNF
.25"(6.36 mm) key way
Front Drive Adapter: (2402909-S)
12 Volt Electric Start: (2509811-S) Solenoid Shift Style
Alternator: (237878-S) 15/20 Amp
Regulator: (4140310-S)
Fuel Pump: (2439316-S) Vacuum Style
Cylinder Type: Cast Iron Sleeves
Muffler: (2478623-S) Canister, Starter side exit 45 degree
Oil Sensor: (2509927-S)
Oil Filter: (1205001-S)
Throttle Controls: (24126176-S) Remote
Air Filter: (4708303-S) Standard
Engine Features:
Engine Applications: Also Use: PA-62642
Sales Notes: MORIDGE - Zero Turn
Grasshopper 618
*May require conversion kit if replacing a 54515 series engine. (Listed Below)
Grasshopper part number: 606321
Durable, Long Life Design.
Hydraulic valve lifters are oil pressurized, ensuring that push rods stay in constant contact with the rocker arms. Requiring no adjustment, the valve train is virtually maintenance-free. In addition, full-pressure lubrication delivers continuous lube to critical engine components, even at 25-degree angle of operation and optional oil cooler regulates the oil temperature extending oil-change intervals. Large capacity, in-line fuel filter provides extra protection against dirt particles that can clog fuel lines.
High Power Performance.
Overhead valve technology provides greater volumetric efficiency and a higher compression ratio. This produces more power, improved fuel economy and cooling and reduces oil consumption. In addition, there is virtually no carbon buildup, reducing overall maintenance costs. The variable speed, mechanical governor promises smooth performance, regardless of application or fluctuating demands for power.
Reliable Starting.
Kohler Command PRO® electronic ignition system generates a stronger spark at low cranking speed and Automatic Compression Release (ACR) allows compression to escape during cranking to reduce pull force.
User-Friendly Maintenance.
- Extended maintenance intervals
- Yellow oil fill cap & dipstick handle
- Dual oil drains
- Easy-access oil fill/dipstick
- Two-year limited warranty
High Power Performance.
- High-performance spark plugs
- 20 amp charging, regulated
- Larger in-line fuel filter
- Overhead valve (OHV) design
Reliability and Long Life Design.
- Hardened crankshaft journals
- High-efficiency fan and screen
- Larger dual-element air filter with foam pre-cleaner
- Cast iron cylinder liners
- Hydraulic valve lifters
- Full-pressure lubrication
- Spin-on, full-flow oil filter
Quiet, Smooth Operation.
- Engineered material blower housing
- Mechanical fuel pump
- CARB & EPA emission-certified
Easy Dependable Starts.
- Smart-Choke™ carburetor
- Electronic ignition system
- Solenoid shift starter
Engine Type:
4-cycle, gasoline, OHV, cast iron cylinder liners, aluminum block
| Max Power @3600 RPM hp (kW) 1 |
19 (14.2) |
| Displacement cu in (cc) |
41.1 (674) |
| Bore in (mm) |
3.1 (80) |
| Stroke in (mm) |
2.6 (67) |
| Max Torque lbs. ft (Nm)1 |
35 (47.5) |
| Compression Ratio |
8.5:1 |
| Dry Weight lbs (kg) |
90 (41) |
| Oil Capacity U.S. quarts (L) |
2 (1.9) |
| Lubrication |
Full pressure w/full-flow filter |
| Dimensions L x W x H in |
14 x 17.7 x 19.0 |
| Backpressure Limit 2 |
50 |
* Length is grass screen to PTO mounting face. Width is spark plug to spark plug. Height is top of air cleaner to mounting feet.
1 Max Power (hp) and Max Torque (lbs ft) specifications for Kohler general purpose engines are rated pursuant to Society of Automotive Engineers (SAE) J1940 based on gross output testing performed according to SAE J1995 without the air cleaner and muffler. Actual engine power and torque are lower and affected by accessories (air cleaner, exhaust, charging, cooling, fuel pump, etc.), application, engine speed, ambient operating conditions (temperature, humidity and altitude) and other factors. This J1940 / J1995 rating provides consistent measurement to customers who may want to control the intake and exhaust features of the engine. For more information, contact Kohler Co. Engine Engineering Department. Kohler Co. reserves the right to change product specifications, designs and standard equipment without notice and without incurring obligation.
2 Inches of H20 @ 3600 RPM WOT
What's Included
- (1) Engine
-
Key Specs
|
Engine Displacement (cc)
|
620 |
|
Start Type
|
Electric |
|
Engine Type
|
Command Pro V-Twin - CH18 - OHV |
|
Rated Power (HP)
|
18 |
|
Torque (ft./lbs.)
|
32.8 |
|
Displacement (cu. in.)
|
38.1 |
|
Shaft Output
|
Horizontal |
|
Shaft Diameter (in.)
|
1 |
|
Shaft Length (in.)
|
3 |
|
Shaft End Tapped (Diameter (in.)/Threads per inch)
|
7/16 - 20 |
|
Shaft Rotation (From PTO Shaft Side)
|
Counterclockwise |
|
Cylinders (qty.)
|
2 |
|
Cylinder Bore
|
Cast iron |
|
Bore x Stroke (in.)
|
3.03 x 2.64 |
|
Compression Ratio
|
8.5:1 |
|
Cooling System
|
Air cooled |
|
Air Cleaner Type
|
Dual element air filter with foam pre-cleaner |
|
Fuel Type
|
Gasoline |
|
Fuel Pump
|
Mechanical |
|
Fuel Filter
|
In line |
|
Oil Capacity (qt.)
|
2 |
|
Lubrication System
|
Full pressure |
|
Ignition System
|
Electronic |
|
Governor System
|
Manual |
|
Carburetor
|
Smart Choke |
|
Max. RPM
|
3,600 |
|
Muffler Included
|
Yes |
|
Bolt Circle (in.)
|
5 5/8, 7 3/4 |
|
Mounting Base L x W (in.)
|
7 1/4 x 3 1/2 |
|
Dimensions L x W x H (in.)
|
14 x 17 11/16 x 19 |
|
EPA/CARB Approval (California Air Resource Board)
|
Yes |
|
Manufacturer Warranty
|
24 months parts / 24 months labor |
|
Ship Weight
|
125.0 lbs |
|
Item#
|
PA-CH620-3050 Grasshopper Moridge ZTR
|
Note exact specifications and prices subject to change without notice.
Optional
| 
English
French
Spanish
German
Italian
Portuguese
