#NI
No parts or service available diagram
"f" type plug to "f" - type plug with rubber weather boot
Part #N/P
The manufacturer no longer makes this part, and there's no substitute part
Model # S4090-B Official Wards lawn mower
Here are the diagrams and repair parts for Official Wards S4090-B lawn mower, as well as links to manuals and error code tables, if available.
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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.
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