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420cc 103hp EFI equipped


  • Patented CMXX™ Series Design
  • 420cc Displacement
  • 21.0 ft-lbs Gross Torque per SAE J1940
  • Overhead Valve (OHV)

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Patented CMXX™ Design
LCT’s patented Commercial Series engines are designed to deliver maximum performance for the most rugged conditions with industrial grade components and uniquely designed features.

Overhead Valve (OHV) Design
OHV Technology delivers more power and improved efficiency by running smoother and cooler which results in longer engine life. OHV also improves fuel economy while reducing exhaust emissions and greenhouse gases.

Cast Iron Sleeve Bore
A cast iron sleeve reduces bore wear and extends the life of the engine while improving emissions and oil consumption over an extended run period.

Dual Ball Bearings
Industrial ball bearings reduce friction and wear for prolong engine life.

Rugged Metal Fuel Tank 
Heavy duty metal fuel tank provides higher durability and rugged construction.

Low Noise Muffler
Sound pressure balanced exhaust system provides unparalleled quiet operation.

Lubrication System
This system is engineered to deliver extra lubrication to internal engine bearings reducing heat build up and extending engine run life.

Forged Crankshaft
Forged steel crankshaft provides superior strength in high PTO torque industrial environments.

Dual Port – Pleated Paper Filtration System
Side air entry ports help reduce debris entry, while a paper pleated filter and foam pre-cleaner provide maximum engine protection against high debris environments. Foam filter also available.

Engine Displacement

21.0 lbs-ft @ 3050 rpm

PTO Mounting Configuration (i.e. Bolt Circle Pattern)
Horizontal [view schematic]

Crankshaft Height Dimensions
[view schematic]

Mounting Foot Specifications
[view schematic]

Engine Design
Overhead Valve (OHV)

Aluminum Cylinder Block with Cast Iron Sleeve

Dry Weight
~31.5kg (~69.5 lbs)

Fuel Tank Design
Metal with Durable Powder Coat

Fuel Tank Capacity (qt)
2.7 Liters (2.9 qt)

Oil Capacity – dry (oz.)
1.24 Liters (42 oz) [view schematic for proper oil fill]

Oil Specification
SAE 10W-30 for general use [view oil recommendations] ; synthetic oil is a good alternative.

Engine Fuel
Regular Unleaded 87 Octane Gasoline (max. 10% Ethanol blend can be used with LCT engines). E-15 to E-85 can NOT be used.

* per SAE J1940