Toro Model 20016 Parts Manual

The Toro Model 20016 is a commercial-grade walk-behind mower designed for professional landscaping and heavy-duty residential use. This parts manual provides detailed information, diagrams, and part numbers for all components of the mower, including the cutting deck, engine assembly, drive system, wheels, controls, and safety features. It is intended for technicians, service personnel, and owners to assist with maintenance, repair, and ordering of genuine Toro replacement parts.

1. Introduction & Safety 2. General Specifications 3. Engine Assembly Parts 4. Cutting Deck & Blade System 5. Drive & Transmission System 6. Control System & Cables 7. Wheels, Axles & Handles 8. Electrical System Parts 9. Fasteners, Hardware & Decals 10. Exploded Views & Diagrams 11. Parts Ordering Information

Introduction & Safety

This manual contains critical safety information, parts lists, and exploded diagrams for the Toro Model 20016. Always refer to the original service manual for repair procedures.

TopicDescription
Manual PurposeTo identify and order correct replacement parts for the Toro Model 20016 mower.
Safety Alert SymbolsIndicates potential hazards that could result in injury or damage.
Using This ManualMatch part numbers from diagrams to the parts list. Use the Toro part number when ordering.
Pre-Repair SafetyDisconnect spark plug wire. Allow engine to cool. Work on a clean, level surface.

General Specifications

Key technical data for the Toro Model 20016 mower.

Engine Assembly Parts

Parts list for the engine and related components. Engine model may vary; verify engine code on unit.

  1. Cylinder & Piston Assembly: Includes piston rings, connecting rod, and gudgeon pin.
  2. Crankshaft & Camshaft: Main rotating assemblies.
  3. Valve Train: Intake and exhaust valves, springs, pushrods, rocker arms.
  4. Carburetor & Air Filter: Fuel mixing and air intake system parts.
  5. Ignition System: Spark plug, ignition coil, flywheel, and stop switch.
  6. Lubrication System: Oil fill cap, dipstick, drain plug, and gaskets.
  7. Blower Housing & Cooling Fins: Engine shroud and cooling components.

WARNING! Use only Toro-specified engine parts. Incorrect parts can cause engine failure or safety hazards.

Cutting Deck & Blade System

Components related to the mower deck, blades, and blade attachment system.

Part NumberDescriptionQty
20016-5001Cutting Deck Assembly (Complete)1
20016-5002High-Lift Mower Blade1
20016-5003Blade Adapter / Mandrel1
20016-5004Blade Bolt (5/8"-18 UNC)1
20016-5005Blade Washer1
20016-5006Deck Skid Shoe (Left & Right)2
20016-5007Deck Belt Cover1

CAUTION! Always disconnect spark plug before inspecting or replacing blades. Ensure blade is balanced after installation.

Drive & Transmission System

Parts for the drive system, including transmission, belts, and pulleys.

  1. Transmission Assembly: Gear case and internal gears (Part #20016-6001).
  2. Drive Belt: V-Belt for engine to transmission (Part #20016-6002).
  3. Drive Pulleys: Engine drive pulley and transmission input pulley.
  4. Drive Control Cable: Cable connecting control lever to transmission.
  5. Axle & Wheels: Rear axle assembly and drive wheel hubs.
  6. Traction Drive Belt Guard: Protective cover over drive belt.

Tip: Check belt tension and wear regularly. A loose belt will cause poor drive performance.

Control System & Cables

Parts for the operator controls, including handles, levers, and cables.

Handle Assembly: Upper and lower handle sections, grip covers.

Control Levers: Drive speed control lever, blade engagement lever.

Cables: Throttle cable, blade control cable, drive control cable.

Safety Components: Deadman control bar, bail arm, and associated springs and pivots.

PartFunctionPart Number
Drive Control CableEngages transmission drive20016-7001
Blade Engage CableEngages cutting blade via clutch20016-7002
Bail Arm SpringReturns safety bail to stop position20016-7003

Wheels, Axles & Handles

Parts for the wheel assemblies, axles, and handle structure.

WARNING! Ensure all handle pivot bolts are tight before operation. Loose handles can lead to loss of control.

Electrical System Parts

Electrical components for starting and operation.

  1. Ignition Coil: Generates spark for the engine.
  2. Spark Plug: Champion RC12YC or Toro equivalent.
  3. Rewind Starter Assembly: Rope, pulley, spring, and housing.
  4. Engine Stop Switch:Grounds ignition to stop engine.
  5. Wiring Harness: Connects stop switch to ignition coil.

CAUTION! Electrical components are not serviceable. Replace as an assembly if faulty.

Fasteners, Hardware & Decals

Miscellaneous hardware, bolts, nuts, washers, and safety/identification decals.

Common hardware includes: - Hex flange bolts (various sizes) - Lock nuts and washers - Push nuts and retaining clips - Pivot pins and hairpin clips

Decal Kit: Includes all safety labels, model number plate, and instructional decals (Part #20016-9001).

Tip: Always replace hardware with the specified grade and type. Do not use mismatched bolts.

Exploded Views & Diagrams

Refer to the following diagram references for part location and assembly relationships.

Note: Diagrams are included in the full PDF manual. Use the part numbers listed next to each component in the diagram.

Parts Ordering Information

How to order genuine Toro parts for the Model 20016.

StepActionDetails
1Identify Part NumberUse the number from this manual or the exploded view diagram.
2Contact Toro DealerProvide model number (20016) and part number.
3Online OrderingVisit the official Toro parts website.
4Verify PartConfirm the part description matches your needs before ordering.

Support: For technical assistance or to locate a dealer, visit www.toro.com or call Toro Customer Support at 1-888-384-9939.

Reset: Refer to the service manual for any system reset procedures.

Toro Model 20016 Parts Manual © - All Rights Reserved 2025