Lawn-Boy 17750 Operator's Manual

Lawn-Boy 17750 Operator's Manual

21in mulching/rear bagging lawn mower
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Introduction

This rotary-blade, walk-behind lawn mower is intended
to be used by residential homeowners. It is designed
primarily for cutting grass on well-maintained lawns on
residential properties. Using this product for purposes
other than its intended use could prove dangerous to
you and bystanders.
Read this information carefully to learn how to operate
and maintain your product properly and to avoid
injury and product damage. You are responsible for
operating the product properly and safely.
Visit www.Lawn-Boy.com for more information,
including safety tips, training materials, accessory
information, help finding a dealer, or to register your
product.
Whenever you need service, genuine Lawn-Boy
parts, or additional information, contact an Authorized
Service Dealer or Lawn-Boy Customer Service and
have the model and serial numbers of your product
ready.
Figure 1
identifies the location of the model
and serial numbers on the product. Write the numbers
in the space provided.
Important:
With your mobile device, you can
scan the QR code on the serial number decal (if
equipped) to access warranty, parts, and other
product information
1. Model and serial number location
© 2020—Lawn-Boy® Inc.
2101 Ashland Ave
Beatrice, NE 68310
21in Mulching/Rear Bagging Lawn
Mower
Model No. 17750—Serial No. 400000000 and Up
Model No. 17752—Serial No. 400000000 and Up
Model No. 17754—Serial No. 400000000 and Up
Register at www.Lawn-Boy.com.
Figure 1
Register at www.LawnBoy.com.
Model No.
Serial No.
This manual identifies potential hazards and has
safety messages identified by the safety-alert symbol
(Figure
2), which signals a hazard that may cause
serious injury or death if you do not follow the
recommended precautions.
This manual uses 2 words to highlight information.
Important calls attention to special mechanical
information and Note emphasizes general information
worthy of special attention.
To avoid waste and help the environment, a
side-discharge chute does not come with your
purchase (most customers prefer to mulch or
bag their grass clippings). You can request a
side-discharge chute when you register your product
at www.Lawn-Boy.com. Simply check the box in the
online registration form and Lawn-Boy will send you a
side-discharge chute at no additional charge. Please
allow 1 to 2 weeks for delivery.
It is a violation of California Public Resource Code
Section 4442 or 4443 to use or operate the engine on
any forest-covered, brush-covered, or grass-covered
land unless the engine is equipped with a spark
g283232
arrester, as defined in Section 4442, maintained in
effective working order or the engine is constructed,
equipped, and maintained for the prevention of fire.
The enclosed engine owner's manual is supplied
for information regarding the US Environmental
Protection Agency (EPA) and the California Emission
Original Instructions (EN)
Form No. 3441-782 Rev A
Operator's Manual
Figure 2
Safety-alert symbol
*3441-782*
Printed in Mexico
All Rights Reserved
g000502

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Summary of Contents for Lawn-Boy 17750

  • Page 1: Introduction

    Simply check the box in the product information online registration form and Lawn-Boy will send you a side-discharge chute at no additional charge. Please allow 1 to 2 weeks for delivery.
  • Page 2: Table Of Contents

    Contents Control Regulation of emission systems, maintenance, and warranty. Replacements may be ordered through the engine manufacturer. Introduction ............... 1 Gross or Net Torque: The gross or net torque Safety ............... 3 of this engine was laboratory rated by the engine General Safety ...........
  • Page 3: Safety

    Safety This machine has been designed in accordance with ANSI B71.1-2017. General Safety This product is capable of amputating hands and feet and of throwing objects. Always follow all safety instructions to avoid serious personal injury or death. • Read, understand, and follow the instructions and warnings in this Operator’s Manual and on the machine and attachments before starting the engine.
  • Page 4: Safety And Instructional Decals

    Safety and Instructional Decals Safety decals and instructions are easily visible to the operator and are located near any area of potential danger. Replace any decal that is damaged or missing. decaloemmarkt Manufacturer's Mark 1. This mark indicates that the blade is identified as a part from the original machine manufacturer.
  • Page 5: Setup

    Setup Electric-start model only Important: Remove and discard the protective plastic sheet that covers the engine and any other plastic or wrapping on the machine. decal140-4357 140-4357 Important: To prevent accidental starting, do not insert the key into the electric-start ignition (if 1.
  • Page 6: Installing The Recoil-Starter Rope In The Rope Guide

    Move the handle to the operating position (Figure Install the handle knobs and tighten them firmly by hand until they are completely tight against the handle. Installing the Recoil-Starter Rope in the Rope Guide No Parts Required Procedure Important: To start the engine safely and easily g024070 whenever you use the machine, install the Figure 3...
  • Page 7: Adding Oil To The Engine

    Adding Oil to the Engine No Parts Required Procedure Important: If the oil level in the engine is too low or too high and you run the engine, you may damage the engine. g222533 Figure 6 Charging the Battery No Parts Required Procedure Electric-Start Model Only Refer to...
  • Page 8: Assembling The Grass Bag

    Assembling the Grass Bag No Parts Required Procedure Slip the grass bag over the frame as shown in Figure g027544 Figure 8 g027543 Figure 7 Hook the top and side channels of the bag onto 1. Handle 3. Grass bag the top and sides of the frame, respectively 2.
  • Page 9: Product Overview

    Figure 10 2. Battery charger 1. Grass bag (electric-start model only) Specifications Model Weight Length Width Height 28 kg 17750 (62 lb) 31 kg 142 cm 56 cm 102 cm g338647 17752 Figure 9 (67 lb) (56 inches) (22 inches)
  • Page 10: Operation

    Operation – Avoid prolonged breathing of vapors. – Keep your hands and face away from the nozzle and the fuel-tank opening. Note: Determine the left and right sides of the machine from the normal operating position. – Keep fuel away from your eyes and skin. Before Operation Filling the Fuel Tank Before Operation Safety...
  • Page 11: Checking The Engine-Oil Level

    Checking the Engine-Oil Level Service Interval: Before each use or daily Important: If the oil level in the crankcase is too low or too high and you run the engine, you may damage the engine. g222533 Figure 12...
  • Page 12: Adjusting The Cutting Height

    Adjusting the Cutting Height WARNING Adjusting the cutting-height levers could bring your hands into contact with a moving blade and result in serious injury. • Shut off the engine, remove the electric-start key (if equipped), and wait for all moving parts to stop before adjusting the cutting height.
  • Page 13 Operate the engine only in well-ventilated areas. Exhaust gases contain carbon monoxide, which is an odorless, deadly poison. • Check the grass catcher components and the discharge chute frequently for any wear or deterioration and replace them with genuine Lawn-Boy parts when necessary.
  • Page 14: Starting The Engine

    Starting the Engine Starting the Engine Using the Ignition Key Electric-Start Model Only Pull the blade-control bar to the handle and hold (Figure 14). g188707 Figure 16 Note: When you pull the recoil-start handle, pull it lightly until you feel resistance, then pull it sharply (Figure 16).
  • Page 15: Shutting Off The Engine

    (if equipped), disconnect the wire from the spark plug, and examine the machine for damage. • For best performance, install a new Lawn-Boy blade before the cutting season begins or when necessary.
  • Page 16: After Operation

    Cutting Grass • Clean grass and debris from the machine to help prevent fires. Clean up oil or fuel spills. • Cut only about a third of the grass blade at a time. • Never store the machine or fuel container where Do not cut below 51 mm (2 inches) unless the there is an open flame, spark, or pilot light, such grass is sparse or it is late fall when grass growth...
  • Page 17: Folding The Handle

    Folding the Handle WARNING Folding or unfolding the handle improperly can damage the cables, causing an unsafe operating condition. • Do not damage the cables when folding or unfolding the handle. • If a cable is damaged, contact an Authorized Service Dealer. Remove the electric-start key (if equipped).
  • Page 18: Maintenance

    To ensure optimum performance of the machine, Important: Before tipping the machine to use only genuine Lawn-Boy replacement parts and change the oil or replace the blade, allow the accessories. Replacement parts and accessories fuel tank to run dry through normal usage. If...
  • Page 19: Servicing The Air Filter

    Servicing the Air Filter Changing the Engine Oil Service Interval: Every 25 hours Service Interval: Yearly Yearly Changing the engine oil is not required, but if you want to change the oil, use the following Unclip the top of the air-filter cover (Figure 22).
  • Page 20: Charging The Battery

    g002889 Figure 25 Plug the charger into a wall outlet. g024078 Note: When the battery no longer holds a Figure 24 charge, recycle or dispose of the lead-acid battery according to local codes. After draining the used oil, return the machine to Note: Your battery charger may have a 2-color LED the operating position.
  • Page 21 g338674 Figure 26 1. Battery cover 3. Foam 2. Fuse holder 4. Battery Replace the fuse in the fuse holder (Figure 27). g002878 Figure 27 Install the battery cover.
  • Page 22: Replacing The Blade

    Replacing the Blade Service Interval: Yearly Important: You will need a torque wrench to install the blade properly. If you do not have a torque wrench or are uncomfortable performing this procedure, contact an Authorized Service Dealer. Examine the blade whenever you run out of fuel. If the blade is damaged or cracked, replace it immediately.
  • Page 23: Adjusting The Self-Propel Drive Cable

    Adjusting the Self-Propel Storage Drive Cable Store the machine in a cool, clean, dry place. Self-Propel Model Only Storage Safety Whenever you install a new self-propel cable or if the self-propel drive is out of adjustment, adjust the Always shut off the machine, remove the ignition key self-propel drive cable.
  • Page 24: Removing The Machine From Storage

    Removing the Machine from Storage Electric-start models only: Charge the battery for 24 hours; refer to 4 Charging the Battery (page Check and tighten all fasteners. Remove the spark plug and spin the engine rapidly by pulling the recoil-start handle to blow the excess oil from the cylinder.
  • Page 25 Notes:...
  • Page 26 Notes:...
  • Page 27 Lawn-Boy has chosen to provide consumers with as much information as possible so that they can make informed decisions about the products they buy and use. Lawn-Boy provides warnings in certain cases based on its knowledge of the presence of one or more listed chemicals without evaluating the level of exposure, as not all the listed chemicals provide exposure limit requirements.

This manual is also suitable for:

1775217754

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