Power-Flex 18
The Power-Flex 18 is a tractor produced by Power Flex Lawn Tractors. The listed engine power is Gasoline (listed): 18 hp / 13.4 kW. Transmission: Ford.
Engine Power
Gasoline (listed): 18 hp / 13.4 kW
Fuel & Capacities
Gasoline
Transmission
Ford
Overview
![]() | 1958 - 1960
Garden tractor |
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Production | |
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Manufacturer | Power-Flex |
Garden tractor | |
Built in Berthoud, Colorado, USA | |
Power-Flex 18 Engine | |
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18HP 1-cyl gasoline | |
Engine details ... |
Power-Flex 18 Transmission | |
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3-speed gear | |
Transmission details ... |
Mechanical | |
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Two-wheel drive | |
Manual steering | |
Open operator station. |
Dimensions & Tires | |
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Full dimensions and tires ... |
Electrical | |
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Ground | negative |
Battery volts | 12 |
Engine
Engine Detail — Gasoline
Fuel Type | Gasoline |
Configuration | 1-cylinder, air-cooled |
Power | 18 hp
13.4 kW |
Starter | electric |
Starter volts | 12 |
Transmission
Transmission — Ford
Transmission | Ford |
Type | gear |
Gears | 3 forward and 1 reverse |
Dimensions
Power-Flex 18 Tires |
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Dimensions |
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Photos
Recommended Implements & Sizing Guide
Engineering recommendations for Power Flex Lawn Tractors Power-Flex 18 based on its 18 HP power envelope and ASAE agricultural standards.
| Implement & Operation | Recommended Size | Workload Rating | Engineering Notes |
|---|---|---|---|
Moldboard PlowPrimary Tillage | 1 to 2 Bottom (12")1 - 2 铧 (30 cm) | Light Duty | Ideal for garden plots and light sandy soil. |
Rotary Cutter / MowerMowing & Clearing | 4 ft (48 in)1.2 m | Light Duty | Pasture clipping and light brush under 1" diameter. |
Rotary TillerSeedbed Prep | 42 to 48 in105 - 120 cm | Light Duty | Covers compact tractor tire width. |
Sizing & Soil Condition NoteActual implement sizing varies depending on local soil conditions (heavy clay vs sandy loam), field slope, and operating speed. Heavy tillage implements may require front ballast weights and wheel weights.
Fluids, Capacities & Working Autonomy
Standard fluid requirements, service intervals, and continuous runtime estimates for Power Flex Lawn Tractors Power-Flex 18.
Engine Crankcase Oil
SAE 15W-40 (Heavy Duty Diesel)
Standard Spec: API CK-4 / CJ-4 Heavy Duty
Service Interval: 150 – 250 Hours
Transmission & Hydraulic System
UTTO (Universal Tractor Transmission Oil)
Standard Spec: ISO VG 46 / 68 (Wet Brake & Trans Compatible)
Service Interval: 600 – 1000 Hours
Engine Cooling System
50/50 Ethylene Glycol Pre-mix
Standard Spec: ASTM D6210 / Heavy-Duty OAT Antifreeze
Service Interval: 2 Years / 1500 Hours
Power Flex Lawn Tractors Power-Flex 18 Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for Power Flex Lawn Tractors Power-Flex 18.
Converted Equivalents:
Horsepower (HP)18 hp
Kilowatts (kW)13.4 kW
Metric Horsepower (PS / CV)18.2 PS
Direct Competitor Comparison
Compare Power-Flex 18 against same-era industry alternatives in the same horsepower class.
Current Model
Power Flex Lawn Tractors
Power-Flex 18
Engine Power:Gasoline (listed): 18 hp / 13.4 kW
★ Baseline Reference
International HarvesterMarket Competitor
International Harvester Type A 15HP
Engine Power:16.7
Production Years:1908 - 1911
Related models
Power-Flex lawn tractors 10
- Power:
- 9
- Production years:
- 1958 - 1960




