Craftsman 917.25481 FF/18

The Craftsman 917.25481 FF/18 is a tractor produced by Craftsman Lawn Tractors. It is equipped with a 693 cc 42.33 ci engine. The listed engine power is Gasoline (gross): 18 hp / 13.4 kW. Transmission: Eaton 11. Operating weight: 820 lbs 371 kg.

Engine Power

Gasoline (gross): 18 hp / 13.4 kW

Fuel & Capacities

5 gal 18.9 L

Transmission

Eaton 11

Operating Weight

820 lbs 371 kg

Overview

	1981 - 1982 FF SeriesGarden tractorRoper built FF Series Garden tractor Roper built

Production
Distributor	Craftsman (a part of Sears)
Manufacturer	Roper
Garden tractor
Original price was $4,000 in 1982

Craftsman 917.25481 Engine
18HP Briggs & Stratton 693cc 2-cyl gasoline
Fuel tank	5 gal 18.9 L
Engine details ...

Craftsman 917.25481 Transmission
hydrostatic
Transmission details ...

Mechanical
Two-wheel drive
Manual steering
Disc brakes
Open operator station.

Tractor hitch
Rear Type	0 OptOptional

Power Take-off (PTO)
Rear PTO	independent OptOptional
Rear PTO Type	2000
Front PTO	independent
Clutch	electric

Dimensions & Tires
Weight	820 lbs 371 kg
Front tire	18x8.50-8
Rear tire	26x12-12
Full dimensions and tires ...

Electrical
Ground	negative
Battery volts	12

References

Garden Tractors published in 1980, by Sears
Owner's Manual 917.254812 (3848J-2.2-81) published in 1981
Farm and Ranch Catalog published in 1982, by Sears

Engine

Engine Detail — 693 cc / 42.33 ci Gasoline

Manufacturer	Briggs & Stratton 422437
Fuel Type	Gasoline
Configuration	2-cylinder, air-cooled opposed-twin
Displacement	693 cc 42.33 ci
Bore/Stroke	3.44x2.28 inches 87 x 58 mm
Power (gross)	18 hp 13.4 kW
Rated RPM	3600
Torque	27.8 lb-ft 37.7 Nm
Torque RPM	2700
Starter	electric
Starter volts	12
Sparkplug gap	0.030 inches 0.762 mm
Oil capacity	1.5 qts 1.4 L
Oil change	25 h

Transmission

Transmission — Eaton 11

Transmission	Eaton 11
Type	shaft-driven hydrostatic
Gears	infinite forward and reverse (2-range)
Oil capacity	7.5 qts 7.1 L
Oil type	ATF F

	ATF F

Dimensions

Craftsman 917.25481 Tires
Lawn/turf front	18x8.50-8
Lawn/turf rear	26x12-12

Dimensions
Length	75.8 inches 192 cm
Width	44 inches 111 cm
Height (steering wheel)	39.6 inches 100 cm
Weight	820 lbs 371 kg

Attachments

Attachment overview
44" mid-mount mower deck
50" mid-mount mower deck
Snowblower
Blade
Front-end loader
A rear-mount 44-inch mower and 48-inch tiller were available for the FF/18. The attachments required the three-point hitch and rear PTO.

Photos

Craftsman FF/18, left side.

Craftsman FF/18, right side.

Rear view of the Craftsman FF/18.

Recommended Implements & Sizing Guide

Engineering recommendations for Craftsman Lawn Tractors Craftsman 917.25481 FF/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 Craftsman Lawn Tractors Craftsman 917.25481 FF/18.

Estimated Continuous Field Runtime: 5.3 hrs

Approximately 5.3 hours of continuous field operation at ~75% rated power on a full tank (5 gal / 18.9 L).

Estimated 75% Load Fuel Burn~0.9 gal/hr (3.5 L/hr)

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

Craftsman Lawn Tractors Craftsman 917.25481 FF/18 Specification Unit Converter

Convert power, fluid capacities, and operating weights between metric and imperial standards for Craftsman Lawn Tractors Craftsman 917.25481 FF/18.

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Converted Equivalents:

Horsepower (HP)18 hp

Kilowatts (kW)13.4 kW

Metric Horsepower (PS / CV)18.2 PS

Direct Competitor Comparison

Compare Craftsman 917.25481 FF/18 against same-era industry alternatives in the same horsepower class.

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