Toro Flex Force Lawn Mower

User Manual & Installation Guide

21-inch Cutting Width

Installation Guide

Tools Needed:

  • Adjustable wrench
  • Screwdrivers (flat and Phillips)
  • Pliers
  • Battery charger (for electric models)
  • Safety gloves

Step-by-Step Assembly

  1. Unpack the Mower: Remove all packaging materials and check for any shipping damage.
  2. Handle Assembly: Attach the upper handle to the lower handle using provided bolts and washers.
  3. Install Battery: For electric models, insert the battery into the battery compartment and secure it.
  4. Attach Grass Bag: Connect the grass collection bag to the rear discharge chute.
  5. Height Adjustment: Set the cutting height to your preferred level using the height adjustment lever.
  6. Safety Key Installation: Insert the safety key into the designated slot (electric models only).
  7. Initial Test: Perform a safety check and test the mower in a clear area before first use.
Warning: Always wear appropriate safety gear including eye protection, gloves, and sturdy footwear during assembly and operation.

Specifications

Model Series 21340
Type Electric Lawn Mower
Color Red / Black
Cutting Width 21 inches
Noise Level 75 dB
Control Type Push-button start with variable speed control
Power Source 60V Lithium-ion Battery
Battery Runtime Up to 60 minutes per charge
Cutting Height Range 1.5 - 4 inches (6 positions)
Weight 62 lbs (without battery)
Dimensions (LxWxH) 55 x 22 x 42 inches
Wheel Size 8 inches (front), 10 inches (rear)

Warranty Information

  • Full Warranty: 3 years limited warranty
  • Battery Warranty: 5 years on Lithium-ion battery
  • Motor Warranty: 5 years on electric motor

For warranty service, contact Toro Customer Service at 1-888-384-9939 or visit Toro.com

Key Features

Flex Force Power System

Toro's innovative Flex Force system delivers consistent power and torque for challenging mowing conditions, ensuring smooth operation even in thick grass.

60V Lithium-ion Battery

High-capacity battery provides up to 60 minutes of runtime on a single charge, with quick charging capability and no memory effect.

Personal Pace® Self-Propel

The intuitive Personal Pace system automatically matches your walking speed, making mowing easier and more comfortable on all terrains.

SmartStow® Technology

Unique folding design allows for vertical storage, saving up to 70% more space in your garage or shed compared to traditional mowers.

3-in-1 Cutting System

Mulch, bag, or side discharge capabilities allow you to choose the best cutting method for your lawn's needs and conditions.

Electric Start System

Push-button electric start eliminates pull cords and provides reliable starting in all conditions with minimal maintenance required.

Cutting System Options

Mulching

Finely cuts grass clippings and returns them to the lawn as natural fertilizer

Bagging

Collects clippings for a clean finish, ideal for formal lawns and before events

Side Discharge

Discharges clippings to the side, perfect for cutting tall or wet grass

Variable Speed

Adjustable speed control for different grass conditions and user preferences

Height Adjustment

Single-lever height adjustment for quick changes to cutting height

EdgeMax™

Extended cutting deck allows for trimming along fences and edges

Troubleshooting

Problem Possible Cause Solution
Mower won't start Battery not charged, safety key not inserted, handle not engaged Charge battery, insert safety key, ensure handle is fully engaged
Poor cutting performance Dull blade, incorrect height setting, wet grass Sharpen or replace blade, adjust cutting height, wait for grass to dry
Reduced runtime Old battery, thick grass, extreme temperatures Check battery health, mow more frequently, store battery properly
Uneven cutting Uneven tire pressure, worn blade, uneven ground Check tire pressure, balance or replace blade, level cutting deck
Excessive vibration Damaged blade, loose components, debris in deck Inspect blade, tighten all bolts, clean cutting deck
Self-propel not working Drive cable disconnected, worn drive belt, control issue Check drive cable, inspect drive belt, test control system

Error Indicators

  • Red Battery Light: Low battery - Charge immediately
  • Flashing Power Light: Overload condition - Reduce load or wait
  • Yellow Warning Light: Maintenance required - Check blade or deck
  • No Lights: No power - Check battery connection
  • Continuous Beep: Safety alert - Check handle position
  • Intermittent Beep: Warning - Battery temperature high

Manual Downloads

Current Model Manuals

21340

21" Flex Force Electric Mower

21345

21" Flex Force with SmartStow

21350

21" Flex Force Commercial

21355

21" Flex Force Rear Bag

Popular Previous Models

20330

20" Electric Recycler

20335

20" Super Recycler

20340

20" Personal Pace

20345

22" TimeMaster

Note: For models not listed here, please visit the Toro Support Website for complete documentation.