Page 1
51cm (20”) Self-Propelled Petrol Lawnmower WER21HW4 1938325001 en - Original Instructions ASSEMBLY REQUIRED Minimum Two Persons Save these instructions Sales & Support: 01793 333212 Before use please read & understand this manual; paying particular attention to the safety instructions before use.
CONTENTS INTENDED USE SAFETY INSTRUCTIONS SPECIFICATIONS KNOW YOUR MACHINE ASSEMBLY OPERATION MAINTENANCE, CLEANING & STORAGE TROUBLE SHOOTING PARTS DIAGRAM & LIST DECLARATION OF CONFORMITY WARRANTY INTENDED USE This machine is to be used exclusively for cutting natural grass in private homes and hobby gardens. Never use the mower for other purposes.
INSTRUCTION MANUAL SAFETY INSTRUCTIONS Read and understand the owner’s manual and labels affixed to the machine. Learn its application and limitations as well as the specific potential hazards. Retain these instructions for future reference. The operator is responsible for following the warnings & instructions in this manual and on the product. Read &...
Page 5
− Before releasing blockages, inspecting, cleaning or working on the machine. − After hitting an obstruction. Search for damage on the machine & make repairs as necessary. If the machine starts vibrating unusually, it should be inspected by an Approved Webb Service Dealer.
Page 6
INSTRUCTION MANUAL 15. Switch the engine off: − If you remove blockages from the machine. − Before refueling. WORK AREA 1. Keep work area clean and well lit. Cluttered and dark areas invite accidents. 2. Check the landscape where the machine will be used and remove all objects such as stones, toys, sticks and wires, which could be caught and thrown away from the work area.
Page 7
11. Maintain your machine. Check for misalignment or binding of moving parts, breakage of parts & any other condition that may affect the operation. If damaged, have the machine repaired by an Approved Webb Service Dealer immediately. Many accidents are caused by poorly maintained machines.
INSTRUCTION MANUAL ASSEMBLY ASSEMBLY/PRE-OPERATION This manual gives instructions on the correct assembly and safe use of your machine. It is important that you read these instructions carefully. If necessary, obtain assistance to remove from packaging, take care when carrying the mower to the lawn, as the blades are sharp. REMOVE LAWN MOWER FROM CARTON Roll the lawn mower out of the carton and check thoroughly for additional loose parts.
Page 11
CABLE TIDY 1. Place the cable tidy over the handle assembly and house the cables into the tidy. RECOIL STARTER HANDLE Please note the actual housing is locate on the upper handle and not within the handle fixings as imaged below.
Page 12
INSTRUCTION MANUAL GRASS COLLECTOR FITTING 1. Lift the grass collector flap up, so that it opens past the handle assembly. Hold in position and place the grass collector hooks over the springs and place into position. 2. Lower the grass collector flap to sit onto the grass collector. Using the grass collector, ensures your cuttings are forced to the back of the collector, using air generated by the rotation of the cutting blade.
Page 13
SIDE DISCHARGE CHUTE NOTE : When using the side discharge function, you need to fit the mulch plug, prior to starting the machine. 1. Unlock and lift the side discharge cover. 2. Hook the side discharge chute onto the lawnmower, using the bar of the cover. 3.
INSTRUCTION MANUAL OPERATION FUEL & OIL WARNING YOUR MACHINE IS SUPPLIED WITHOUT ENGINE OIL OR PETROL Operating the engine with insufficient oil, can have catastrophic consequences. Any failure caused by insufficient oil, will not be covered by the manufacturer’s warranty. READ THE SUPPLIED BRIGGS &...
Page 15
ENGINE OIL 1. Remove the oil filler cap with built in dipstick. Oil Filler 2. Fill the engine with 4-stroke SAE30 or 10W/30 air cooled lawnmower engine oil. DO NOT USE automotive or marine oil. The use of a funnel will aid the filling. The engine capacity: See Briggs & Stratton Instruction Manual.
Page 16
INSTRUCTION MANUAL ENGINE STARTING & STOPPING PROCEDURE (NOTE: STARTING AN ENGINE WITHOUT ENGINE OIL OR FUEL CAN SERIOUSLY DAMAGE THE MACHINE) STARTING THE ENGINE (COLD) 1. Make sure that your mower is on a safe, flat area (a paved area or path is ideal - avoid thick wet grass and gravel surfaces) away from fuel or fuelling areas to make starting safe.
Page 17
STOPPING THE ENGINE 1. Release the OPC/Brake lever. The engine will come to a stop and a couple of seconds later, the blade will stop rotating. 2. Or you can move the throttle lever to the STOP position. SELF-PROPELLED To self-propel your lawnmower, 1.
Page 18
INSTRUCTION MANUAL EMPTYING THE GRASS COLLECTOR As soon as grass clippings start to trail the lawnmower, it is time to empty the grass bag. NOTE: Before taking off the grass collector, switch off the engine and wait until the blade has come to a stop.
13. Turn off the engine if you must leave the lawnmower unattended. 14. Never lift the rear of the mower while starting the engine and never place your hands and feet underneath the deck or into the rear discharge chute while the engine is running. 15.
Page 20
INSTRUCTION MANUAL LUBRICATION • WHEELS - Lubricate the ball bearings in each wheel at least once a season with a light oil. CUTTING BLADE • When removing the cutting blade assembly, protect your hands with a pair of heavy-duty gardening gloves.
Page 21
THE DETAIL PROVIDED BELOW ARE GENERIC INSTRUCTIONS FOR 4-STROKE PETROL LAWNMOWER ENGINES. ALWAYS REFER TO THE BRIGGS & STRATTON OPERATORS MANUAL FOR FULL AND COMPLETE INSTRUCTIONS FOR YOUR ENGINES MAINTENANCE. REMOVE ENGINE OIL CAUTION Used oil is a hazardous waste product and must be disposed of properly. Do not discard with household waste.
Page 22
INSTRUCTION MANUAL SPARK PLUG To ensure proper engine operation, the spark plug must be properly gapped and free of deposits. 1. Do not attempt to remove the plug from a hot engine in order to avoid possible damage to the threads. 2.
Page 23
STORAGE & TRANSPORT The following steps should be taken to prepare your machine for storage. STORING THE LAWNMOWER FOR SHORT PERIODS The lawnmower can be stored for short periods of time (less than 15 days) without performing any storage maintenance.Before placing the lawnmower into storage always carry out the following: Allow the engine to fully cool.
INSTRUCTION MANUAL TRANSPORT • Empty the petrol tank • Always let the engine run until it has used up the remainder of petrol in the tank. • Empty the engine oil from the warm engine. • Remove the spark plug boot from the spark plug. •...
Page 25
Please find on the following pages, parts lists and drawings for your machine. Should you require a replacement part, please call the Handy Distribution Spares Team on 01793 333212, option 1 or visit www.webbgardenpower.co.uk for assistance. Webb recommends the use of Handy Parts oils, fuel additives, nylon lines pre-packed parts for all our machines.
Page 26
INSTRUCTION MANUAL PARTS DIAGRAM - WER21HW4 (1938325001)
Page 28
EC DECLARATION OF CONFORMITY Designation: Petrol Self-Propelled 510mm Lawnmower Model(s): WER21HW4 Product No.: 1938325001 Type/Serial No. As per rating label on machine Engine Displacement: 163 cm Rated Engine Speed: 2800 rpm Complies with the following directives: Machinery Directive 2006/42/EC The conformity assessment procedure followed was in accordance with EN ISO 5395-1:2013/A1:2018;...
Page 30
INSTRUCTION MANUAL This Service Book is provided with your Webb, to help you look after your purchase to our recommendations and enable you to take advantage of the conditional manufacturer domestic warranty*. Present this service book to your authorised Webb repair dealer, whenever a service or a warranty appraisal is required.
Page 31
2. Period of Warranty - valid from 1 January 2020 Webb (excludes Dynamic, Legacy & Heritage), 2 year conditional warranty from the original date of sale to the fi rst domestic user.
It is the owner’s responsibility to ensure that their Webb machine is maintained at specifi c intervals. Any approved Webb service dealer can undertake a service, which are specialised in our products and will be aware of your particular machine and any technical updates which will save valuable time &...
Page 33
SERVICE BOOK Your servicing Webb approved dealer will stamp & date the below relevant sections, when the correct service actions have been completed. PLEASE ENSURE THE SERVICE BOOK IS AVAILABLE FOR THE DEALER, DURING SERVICE WORK. 1st Service This must be stamped by an approved service dealer to qualify for a free second year warranty.
Page 34
Service Record INSTRUCTION MANUAL 48 Months 60 Months Date Date 72 Months 84 Months Date Date 96 Months 108 Months Date Date 120 Months 132 Months Date Date...
Page 35
Email From time to time Webb, its associated companies, authorised dealers or third parties working on our behalf may wish to contact you regarding our products, services, off ers or just opinions, which may be used for marketing, research or analysis purposes.
Need help?
Do you have a question about the WER21HW4 and is the answer not in the manual?
Questions and answers