Sears GT-16 Twin 502.25704

The Sears GT-16 Twin 502.25704 is a tractor produced by Sears Lawn Tractors. It is equipped with a 655 cc 40 ci engine. The listed engine power is Gasoline (gross): 16 hp / 11.9 kW. Transmission: 4 forward and 1 reverse. Operating weight: 84 lbs 38 kg.

Engine Power

Gasoline (gross): 16 hp / 11.9 kW

Fuel & Capacities

3 gal 11.4 L

Transmission

4 forward and 1 reverse

Operating Weight

84 lbs 38 kg

Overview

	1978 - 1979 GT16 SeriesGarden tractorMurray built GT16 Series Garden tractor Murray built

Production
Distributor	Sears
Manufacturer	Murray
Garden tractor
Original price	$1,599 (1978 )
	$1,849 (1979 )

Variants
4166	similar Murray model

Sears GT-16 Twin Engine
16HP Briggs & Stratton 655cc 2-cyl gasoline
Fuel tank	3 gal 11.4 L
Engine details ...

Sears GT-16 Twin Transmission
4-speed gear
Transmission details ...

Mechanical
Two-wheel drive
Manual steering
Open operator station.

Dimensions & Tires
Weight	589 lbs 267 kg
Front tire	16x5.50
Rear tire	22x7.50
Full dimensions and tires ...

Electrical
Ground	negative
Battery volts	12

References

Garden Tractors published in 1980, by Sears
Riding Mowers, Lawn Tractors, Garden Tractors and Attachments published in 1979, by Sears
Spring/Summer Catalog published in 1978, by Sears

Engine

Engine Detail — 655 cc / 40 ci Gasoline

Manufacturer	Briggs & Stratton 401707
Fuel Type	Gasoline
Configuration	2-cylinder, air-cooled vertical-shaft horizontally-opposed
Displacement	655 cc 40 ci
Bore/Stroke	3.44x2.16 inches 87 x 55 mm
Power (gross)	16 hp 11.9 kW
Starter	electric
Starter volts	12

Sears GT-16 Twin Engine

Image courtesy of Timothy Earnhart

Transmission

Transmission — 4 forward and 1 reverse belt-driven gear

Type	belt-driven gear
Gears	4 forward and 1 reverse

Dimensions

Sears GT-16 Twin Tires
Lawn/turf front	16x5.50
Lawn/turf rear	22x7.50

Dimensions
Length	65 inches 165 cm
Width	37 inches 93 cm
Height	41 inches 104 cm
Shipping weight	589 lbs 267 kg

Attachments

42" Mower deck
Type	mid-mount Sears 25362
	3-blade
Cutting width	42 inches 106 cm
Weight	84 lbs 38 kg

Photos

1979 Sears GT-16 Twin.

Rear view of the 1979 ears GT-16 Twin, with the hitch.

1978 Sears GT-16 Twin.

Recommended Implements & Sizing Guide

Engineering recommendations for Sears Lawn Tractors Sears GT-16 Twin 502.25704 based on its 16 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 Sears Lawn Tractors Sears GT-16 Twin 502.25704.

Estimated Continuous Field Runtime: 3.6 hrs

Approximately 3.6 hours of continuous field operation at ~75% rated power on a full tank (3 gal / 11.4 L).

Estimated 75% Load Fuel Burn~0.8 gal/hr (3.1 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

Sears Lawn Tractors Sears GT-16 Twin 502.25704 Specification Unit Converter

Convert power, fluid capacities, and operating weights between metric and imperial standards for Sears Lawn Tractors Sears GT-16 Twin 502.25704.

Enter value:

Unit:

Converted Equivalents:

Horsepower (HP)16 hp

Kilowatts (kW)11.9 kW

Metric Horsepower (PS / CV)16.2 PS

Direct Competitor Comparison

Compare Sears GT-16 Twin 502.25704 against same-era industry alternatives in the same horsepower class.

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