Kohler CH680-3091 22.5HP 674cc V-Twin Engine – 1-1/8in Shaft, Electric Start

Description

Repower heavy commercial log splitters with the Kohler CH680-3091 horizontal shaft engine to restore aggressive splitting power on large timber processing jobs. Firewood processing operations place heavy continuous load spikes on small engines, which causes overheating and thrown connecting rods on consumer powerheads. Kohler builds this 674cc 22.5HP Command PRO engine with an oversized 1-1/8-inch output shaft, full-pressure lubrication, and an overhead valve cylinder layout engineered to maintain pump drive speed.

An internal oil pump circulates pressurized motor oil to crankshaft journals through an automotive-style spin-on filter, keeping moving parts shielded on remote timber processing sites. The 1-1/8-inch horizontal shaft handles two-stage hydraulic pump jaw couplings and multi-groove drive belts without lateral deflection. The dual-element commercial air cleaner stops sawdust and grading grit before air reaches the carburetor venturi, preserving compression over multiple working seasons.

Engine Architecture of Kohler CH680-3091

• 674cc 22.5HP Commercial V-Twin: Generates 22.5 horsepower to power two-stage hydraulic pumps through knotty logs.
• 1-1/8-Inch Keyed Horizontal PTO Shaft: Matches heavy drive pulleys, centrifugal clutches, and direct-drive gearboxes.
• Full-Pressure Oil Lube with Spin-On Filter: Pumps filtered oil continuously to crankshaft journal inserts and rod bearings.
• Durable Cast-Iron Cylinder Sleeves: Resists bore wear from abrasive dirt, extending engine life in severe commercial service.
• Dual-Stage Commercial Canister Air Cleaner: Traps fine dust particles across two media layers to preserve cylinder wall compression.
• 12V Electric Starter Motor: Spins the flywheel ring gear with key activation to eliminate manual starting effort.

Commercial Advantages & Heavy-Duty Build

Built for forestry and timber processing tasks, this twin-cylinder horizontal engine delivers reliable torque without excessive maintenance costs.

• Centrifugally cast iron cylinder sleeves and a reinforced crankcase base withstand continuous heavy belt drive loads.
• High combustion efficiency lowers fuel burn per splitting shift, cutting daily operating expenses across commercial operations.

Commercial Equipment Applications & Fit

Weighing 90 pounds dry with an industry-standard 4-bolt horizontal mounting base and 1-1/8-inch shaft, this motor mounts directly onto commercial log splitters, high-output trash pumps, mobile hydraulic units, and firewood processors without adapter plates.

Warranty Protection & Routine Upkeep

• Factory warranty terms provide 3-Year commercial and consumer coverage on all core mechanical assemblies.

Service this engine with fresh 10W-30 motor oil and a new filter every 100 operating hours. Tap clean the air filter element weekly on dusty job sites, and maintain the spark plug electrode gap at 0.030 inches. Order the Kohler CH680-3091 horizontal shaft engine from Mulmotor.com for guaranteed factory-fresh units, complete manufacturer warranty coverage, and dedicated commercial equipment support.