Husqvarna YTH21K46

The Husqvarna YTH21K46 is a tractor produced by Husqvarna Lawn Tractors. It is equipped with a 597 cc 36.43 ci engine. The listed engine power is Gasoline (gross): 21 hp / 15.7 kW. Transmission: Tuff Torq K46. Operating weight: 439 lbs 199 kg.

Engine Power

Gasoline (gross): 21 hp / 15.7 kW

Fuel & Capacities

2.5 gal 9.5 L

Transmission

Tuff Torq K46

Operating Weight

439 lbs 199 kg

Overview

	2010 - 2012 Lawn tractor

Production
Manufacturer	Husqvarna
Lawn tractor
Original price was $1600 in 2013

Husqvarna YTH21K46 Engine
21HP Kohler 597cc 1-cyl gasoline
Fuel tank	2.5 gal 9.5 L
Engine details ...

Husqvarna YTH21K46 Transmission
hydrostatic
Transmission details ...

Mechanical
Two-wheel drive
Open operator station with high-back seat.

Power Take-off (PTO)
Mid PTO	independent
Clutch	manual

Dimensions & Tires
Wheelbase	48 inches 121 cm
Weight	439 lbs 199 kg
Front tire	15x6-6
Rear tire	20x8-8
Full dimensions and tires ...

Electrical
Ground	negative
Charging amps	3 (battery)
	5 (headlights)
Battery CCA	230
Battery volts	12
Battery AH	28
Battery Group	U1R

Engine

Engine Detail — 597 cc / 36.43 ci Gasoline

Manufacturer	Kohler SV610
Fuel Type	Gasoline
Configuration	1-cylinder, air-cooled vertical-shaft
Displacement	597 cc 36.43 ci
Bore/Stroke	3.701x3.386 inches 94 x 86 mm
Power (gross)	21 hp 15.7 kW
Compression	8.5:1
Starter	electric
Starter volts	12
Sparkplug	Champion RC12YC
Sparkplug gap	0.030 inches 0.762 mm
Oil capacity	1.6 qts 1.5 L
Oil change	50 h

Husqvarna YTH21K46 Engine

Image courtesy of Luis V.

Transmission

Transmission — Tuff Torq K46

Transmission	Tuff Torq K46
Type	belt-driven hydrostatic
Gears	infinite forward and reverse
Oil change	sealed unit, owner service is not recommended

Dimensions

Husqvarna YTH21K46 Tires
Lawn/turf front	15x6-6
Lawn/turf rear	20x8-8

Dimensions
Wheelbase	48 inches 121 cm
Length	69.2 inches 175 cm
Width	48 inches 121 cm
Height	41.4 inches 105 cm
Weight	439 lbs 199 kg
Front axle	Cast-iron

Attachments

46" Mower deck
Type	mid-mount Husqvarna
	2-blade
Cutting width	46 inches 116 cm
Overall width	56.7 inches 144 cm
Cut height	1.5 to 4 inch 3 to 10 cm
Cut positions	6

Photos

Husqvarna YTH21K46 lawn tractor.

Husqvarna YTH21K46, front-left view.

Husqvarna YTH21K46, front-right view.

Recommended Implements & Sizing Guide

Engineering recommendations for Husqvarna Lawn Tractors Husqvarna YTH21K46 based on its 21 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.
Disc HarrowSecondary Tillage	5 to 6 ft (16-18" discs)1.5 - 1.8 m (40-45 cm 耙片)	Light Duty	Small acreage soil break-up and secondary aeration.

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 Husqvarna Lawn Tractors Husqvarna YTH21K46.

Estimated Continuous Field Runtime: 2.3 hrs

Approximately 2.3 hours of continuous field operation at ~75% rated power on a full tank (2.5 gal / 9.5 L).

Estimated 75% Load Fuel Burn~1.1 gal/hr (4.1 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

Husqvarna Lawn Tractors Husqvarna YTH21K46 Specification Unit Converter

Convert power, fluid capacities, and operating weights between metric and imperial standards for Husqvarna Lawn Tractors Husqvarna YTH21K46.

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Converted Equivalents:

Horsepower (HP)21 hp

Kilowatts (kW)15.7 kW

Metric Horsepower (PS / CV)21.3 PS

Direct Competitor Comparison

Compare Husqvarna YTH21K46 against same-era industry alternatives in the same horsepower class.

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