Kohler 25hp Command Pro Horizontal Engine Electric Start CH25S PA-CH730-0013 Rayco Stump Grinder
- Supersedes PA-chs-68615, CH25s-68522
Crankshaft: (24014366-S) 1.437"(36) x 4.453"(113)
Drilled & Tapped 5/8-18 UNF
.375" (9.5 mm) Key way
12 Volt Electric Start: (2509811-S) Solenoid Shift Style
Alternator: (237878-S) 15/20 Amp
Regulator: (4140310-S) 15 Amp
Heavy Duty Canister Air Filter: (2504817-S)
Muffler: (2406812-S) Center Straight
Key Switch: (2509904-S) Assy
Oil Filter: (1205001-S)
Fuel Pump: (2455910-S) Valve Cover
Throttle Controls: (2422508-S) Engine Mounted
Weight: 140 lbs
Two-year limited warranty
This v-twin cylinder, air-cooled, horizontal-shaft engine is built to last. OHV, cast iron cylinder liners, and aluminum block construction make the 4-cycle, gasoline-powered Command PRO® ready for the long haul.
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
Overhead Valve Design OHV
• Hydraulic Valve Lifters
• Cast-Iron Cylinder Liners
• PTO Sleeve Bearing (Side Load) (25 & 27 HP)
• Electronic Ignition
• Large Capacity Dual Element Air Cleaner
• High Efficiency Grass Screen and Fan
• Closed Breather System
• Stellite® Exhaust Valves
• 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 Accelerator Pump Carburetor (25 & 27 HP)
• Fuel Shutdown Solenoid, Smart-Choke™ Carburetor
• Mechanical Fuel Pump
• High Performance Spark Plugs
• 12 Volt Solenoid Shift Starter
• 20 Amp Alternator, Regulated
• PTO Face-5.625" (143 mm) Diameter, (4 Holes) 3/8-16 x 0.67" (17 mm) Deep, 7.75" (197 mm) Diameter, (4 Holes) 7/16-14 x 0.83" (21 mm) Deep
• 7" (178 mm) Diameter Pilot
• Color-Black with Cast Aluminum
Standard Features Plus:
• Crankshaft-1.125" (28.5 mm) Diameter x 4.0" (102 mm) PTO Length, 0.25" (6 mm) Keyway, Drilled and Tapped 1.5"(38 mm) Deep, 7/16-20 UNF
• Engine Controls-Key Switch, Throttle and Choke Controls
• Fixed Grass Screen Guard (25 HP)
• 3/16” Evaporative emissions connection
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.
- Accelerator pump carburetor
- High-performance spark plugs
- 20 amp charging, regulated
- Larger in-line fuel filter
- Overhead valve (OHV) design
Reliability and Long Life Design.
- Oil cooler
- Hardened crankshaft journals
- PTO thrust bearing
- High-efficiency fan and screen
- Heavy-duty air cleaner
- Cast iron cylinder liners
- Hydraulic valve lifters
- Full-pressure lubrication
- Spin-on, full-flow oil filter
Warranty information
| Max Power @3600 RPM hp (kW) 1 |
23.5 (17.5) |
| Displacement cu in (cc) |
44.0 (725) |
| Bore in (mm) |
3.3 (83) |
| Stroke in (mm) |
2.6 (67) |
| Max Torque lbs. ft (Nm)1 |
38.4 (52.1) |
| Compression Ratio |
9.0:1 |
| Dry Weight lbs (kg) |
94 (43) |
| 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 |
| Backpressure Limit 2 |
50 |
| J1995 Power hp (kW) 3 |
22.3 (17) |
* 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
Please note exact engine specifications subject to change without notice.
Kohler 25hp Command Pro Horizontal Engine Electric Start
PA-CH730-0013 Rayco Stump Grinder
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
Common engine replacement for truckmounted carpet cleaning machines, pressure washers, and other industrial cleaning machines.
Owners Manual
Service Manual
20130715djc
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