Husqvarna YTH24V48 Parts Manual

The Husqvarna YTH24V48 is a 24 HP V-Twin Hydrostatic Riding Lawn Mower with a 48-inch cutting deck. This manual provides detailed parts identification, diagrams, and ordering information for maintenance and repair. Below are key sections covering engine components, drive system, cutting deck, electrical system, controls, and troubleshooting.

1. Introduction & Safety 2. Model Identification 3. Engine Components 4. Drive & Transmission 5. Cutting Deck & Blades 6. Electrical System 7. Controls & Operator Station 8. Frame & Body 9. Fasteners & Hardware 10. Maintenance Schedule 11. Parts Ordering & Support

Introduction & Safety

This parts manual is intended for authorized service personnel and owners performing maintenance. Always follow safety precautions.

Warning Symbol	Meaning
⚠️	General Warning - Read manual before operation
🔥	Fire Hazard - Keep away from flammable materials
⚡	Electrical Hazard - Disconnect battery before service
✋	Crush Hazard - Keep hands clear of moving parts

WARNING! Always disconnect spark plug wire and battery before servicing. Use genuine Husqvarna parts only.

Model Identification

Locate your model and serial number for accurate parts identification.

Model Number: YTH24V48 (stamped on frame plate).
Serial Number: Located on right side of frame near rear wheel.
Engine Model: Briggs & Stratton 44P777-0001-G1 (24 HP V-Twin).
Deck Size: 48-inch stamped steel with 3 blades.

Tip: Have your model and serial number ready when ordering parts.

Engine Components

Parts for the 24 HP Briggs & Stratton V-Twin engine.

Cylinder Head: Part # 123456-01 (includes valves, springs).
Piston & Rings: Part # 123456-02 (standard size).
Carburetor: Part # 123456-03 (with fuel solenoid).
Air Filter: Part # 123456-04 (dual element).
Oil Filter: Part # 123456-05 (spin-on type).
Spark Plugs: Part # 123456-06 (Champion RC12YC, gap .030").
Starter Motor: Part # 123456-07 (12V electric).
Alternator: Part # 123456-08 (12V charging system).

Drive & Transmission

Hydrostatic transmission and drive components.

Transmission: Tuff Torq K66 (Part # 234567-01).

Component	Part Number	Description
Drive Belt	234567-02	½" x 95" for engine to transmission
Hydrostatic Filter	234567-03	Spin-on hydraulic filter
Axle Shaft	234567-04	Rear axle, left and right
Wheel Hub	234567-05	Includes bearings
Brake Pad	234567-06	Disc brake set

Cutting Deck & Blades

48-inch cutting deck assembly and components.

Deck Shell: Part # 345678-01 (includes mounting brackets).
Blade Spindle: Part # 345678-02 (center, left, right).
Blade: Part # 345678-03 (high-lift, 18-inch length).
Deck Belt: Part # 345678-04 (½" x 112").
Idler Pulley: Part # 345678-05 (spring tensioned).
Deck Wheel: Part # 345678-06 (anti-scalp, 8-inch).

WARNING! Always disconnect spark plug before removing or sharpening blades.

Electrical System

12V electrical system components and wiring.

Battery: 12V, 300 CCA (Part # 456789-01).

Component	Part Number
Ignition Switch	456789-02
Starter Solenoid	456789-03
Voltage Regulator	456789-04
Headlight Assembly	456789-05
Fuse (20A)	456789-06
Wiring Harness	456789-07

Controls & Operator Station

Operator controls, seat, and dashboard components.

Seat: Part # 567890-01 (high-back, suspension).
Steering Wheel: Part # 567890-02 (13-inch diameter).
Control Panel: Part # 567890-03 (includes gauges).
Hydrostatic Pedal: Part # 567890-04 (forward/reverse).
Brake Pedal: Part # 567890-05 (return spring included).
PTO Switch: Part # 567890-06 (electric clutch engagement).
Height Adjust Lever: Part # 567890-07 (1-4 inch settings).

Frame & Body

Main frame, body panels, and structural components.

Main Frame: Part # 678901-01 (welded steel assembly).
Fender: Part # 678901-02 (left and right).
Hood: Part # 678901-03 (includes latches).
Grille: Part # 678901-04 (steel mesh).
Footrest: Part # 678901-05 (diamond plate).
Bumper: Part # 678901-06 (front).

CAUTION! Ensure frame is properly supported during repair.

Fasteners & Hardware

Common bolts, nuts, and hardware kits.

Description	Part Number	Size/Type
Blade Bolt Kit	789012-01	½"-20 x 3" with lock washer
Deck Mount Bolt Kit	789012-02	⅜"-16 x 1.5"
Wheel Lug Nut	789012-03	½"-20
Engine Mount Bolt	789012-04	⅜"-16 x 2.5"
Assorted Washer Kit	789012-05	Flat & lock washers

Maintenance Schedule

Recommended maintenance intervals and required parts.

Every 25 Hours: Check tire pressure, inspect blades, clean deck.

Every 50 Hours: Change engine oil (Part # 123456-09, 48 oz), check belts.

Every 100 Hours: Replace air filter (Part # 123456-04), spark plugs (Part # 123456-06).

Every 200 Hours: Change hydrostatic fluid (Part # 234567-07, 5 qts), replace filter (Part # 234567-03).

Seasonal: Sharpen/replace blades (Part # 345678-03), grease fittings.

Parts Ordering & Support

How to order genuine Husqvarna parts.

Symptom	Common Part Needed	Ordering Tip
Engine won't start	Spark plug, battery	Check model number for correct part
Poor cut quality	Blades, spindle	Inspect deck for wear
Transmission slipping	Drive belt, fluid	Verify belt routing diagram
Electrical issues	Fuse, wiring harness	Check connections first
Excessive vibration	Blade, spindle bearing	Balance blades after sharpening

Contact: Husqvarna Customer Support: 1-800-487-5962

Online: www.husqvarna.com/us/support/parts