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Model # S21ZPR Official Lawn-Boy lawn mower
Here are the diagrams and repair parts for Official Lawn-Boy S21ZPR lawn mower, as well as links to manuals and error code tables, if available.
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Browse Parts forS21ZPR Walk-Behind Mowers
#NI
All parts diagram
Repair kitPart #683777
Replaced by #683777
?Manufacturer substitutionThis part replaces 683777. Substitute parts can look different from the original.$15.29In Stock- Bag assembly
Part #684168
Replaced by #100-6362
?Manufacturer substitutionThis part replaces 684168. Substitute parts can look different from the original.$223.44In Stock - #12
Carburetor group diagram
RetainerPart #610383
Replaced by #610383
?Manufacturer substitutionThis part replaces 610383. Substitute parts can look different from the original.$19.60In Stock - #3
Engine group diagram
NutPart #130743
Replaced by #130743
?Manufacturer substitutionThis part replaces 130743. Substitute parts can look different from the original.This item is not returnable$5.29In Stock - #47
Engine group diagram
Switch kitPart #683968
Replaced by #93-4307
?Manufacturer substitutionThis part replaces 683968. Substitute parts can look different from the original.$83.84In Stock - #42
Housing and shroud group diagram
ScrewPart #607188
Replaced by #607188
?Manufacturer substitutionThis part replaces 607188. Substitute parts can look different from the original.$7.71In Stock - #42
Engine group diagram
ScrewPart #307028
Replaced by #614343
?Manufacturer substitutionThis part replaces 307028. Substitute parts can look different from the original.This item is not returnable$6.89In Stock - #43
Engine group diagram
ActuatorPart #611509
Replaced by #611509
?Manufacturer substitutionThis part replaces 611509. Substitute parts can look different from the original.$11.60In Stock - Tie strap
Part #614249
Replaced by #614249
?Manufacturer substitutionThis part replaces 614249. Substitute parts can look different from the original.This item is not returnable$2.16In Stock - #51
Engine group diagram
RetainerPart #611213
Replaced by #611213
?Manufacturer substitutionThis part replaces 611213. Substitute parts can look different from the original.This item is not returnable$4.94In Stock
Symptoms for gas walk-behind mowers
Choose a symptom to see related walk-behind mower repairs.
Main causes: drive control cable failure, worn or broken drive belt, bad transmission, broken drive wheel…
Main causes: engine needs tune up, dirty or clogged carburetor, damaged flywheel key…
Main causes: dirty carburetor, bad spark plug, clogged air filter, engine choke problems, clogged gas cap vent…
Main causes: damaged cutting blade, loose cutting blade, damaged flywheel key, engine needs tune up…
Main causes: stale gas, engine needs tune up, bad spark plug, dead battery, bad recoil starter, faulty safety switch, ba…
Main causes: uneven wheel height settings, damaged wheel, dull or damaged cutting blade…
Repair guides for gas walk-behind mowers
These step-by-step repair guides will help you safely fix what’s broken on your walk-behind lawn mower.
How to replace a lawn mower spark plug
Take a few minutes to replace the spark plug during your lawn mower's annual tune-up or if the spark plug is burnt or cr…
Repair difficulty
Time required
15 minutes or less
How to replace a lawn mower drive cable
The drive cable engages the transmission to spin the drive wheels and move the mower across the grass. Replace the drive…
Repair difficulty
Time required
60 minutes or less
How to replace a lawn mower starter rope
These step-by-step instructions show how to replace a broken starter pull rope on a walk-behind lawn mower.…
Repair difficulty
Time required
30 minutes or less
Effective articles & videos to help repair your walk-behind mowers
Use the advice and tips in these articles and videos to get the most out of your walk-behind lawn mower.
Wondering when to mow your lawn for the best results? Timing matters more than you might think. Discover the best time o…
Learn about the top 10 must-have electric lawn & garden tools for 2023…
Learn about all the convenient features on our Sears PartsDirect website that make your parts purchases easier.…
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