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Model # 120502-0255-E1 Official Briggs & Stratton engine
Here are the diagrams and repair parts for Official Briggs & Stratton 120502-0255-E1 engine, as well as links to manuals and error code tables, if available.
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120502-0255-E1 Engine
#957
Muffler/fuel tank/rewind starter diagram
Fuel cap
Part #397974
Replaced by #796577
?
Manufacturer substitution
This part replaces 397974. Substitute parts can look different from the original.
$15.54 |
11% OFF Phone Price : $17.54
In Stock
#187
Muffler/fuel tank/rewind starter diagram
Fuel line (red)
Part #691050
Replaced by #791766
?
Manufacturer substitution
This part replaces 691050. Substitute parts can look different from the original.
$9.27 |
10% OFF Phone Price : $10.27
In Stock
#333
Carburetor/armature magneto diagram
Lawn & garden equipment engine ignition coil
Part #802574
Replaced by #590454
?
Manufacturer substitution
This part replaces 802574. Substitute parts can look different from the original.
$55.34 |
10% OFF Phone Price : $61.34
In Stock
Lawn & garden equipment engine recoil starter pulley (replaces 263074, 281504, bs-498144)
Part #498144
$24.47 |
20% OFF Phone Price : $30.47
In Stock
#24
Cylinder/crankshaft/sump diagram
Key
Part #222698
Replaced by #222698S
?
Manufacturer substitution
This part replaces 222698. Substitute parts can look different from the original.
This item is not returnable
$3.29 |
23% OFF Phone Price : $4.29
In Stock
#635
Cylinder/crankshaft/sump diagram
Elbow spacer plug
Part #66538
Replaced by #66538S
?
Manufacturer substitution
This part replaces 66538. Substitute parts can look different from the original.
This item is not returnable
$5.11 |
16% OFF Phone Price : $6.11
In Stock
#523
Cylinder/crankshaft/sump diagram
Lawn & garden equipment engine dipstick (replaces 495264, bs-499621)
Part #499621
This item is not returnable
$24.80 |
19% OFF Phone Price : $30.80
In Stock
#383
Cylinder/crankshaft/sump diagram
Wrench
Part #19374
Replaced by #19576S
?
Manufacturer substitution
This part replaces 19374. Substitute parts can look different from the original.
This item is not returnable
Get free shipping with Automatic Reorder
$9.89 |
9% OFF Phone Price : $10.89
In Stock
Lawn & garden equipment engine cylinder head gasket (replaces 272916)
Part #692249
This item is not returnable
$15.69 |
11% OFF Phone Price : $17.69
In Stock
#58
Muffler/fuel tank/rewind starter diagram
Lawn & garden equipment engine recoil starter rope (replaces 693449, bs-693389)
Part #693389
This item is not returnable
$11.71 |
15% OFF Phone Price : $13.71
In Stock
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Symptoms for gas walk-behind mowers
Choose a symptom to see related walk-behind mower repairs.
Main causes: damaged cutting blade, loose cutting blade, damaged flywheel key, engine needs tune up…
Main causes: uneven wheel height settings, damaged wheel, dull or damaged cutting blade…
Main causes: engine needs tune up, dirty or clogged carburetor, damaged flywheel key…
Main causes: drive control cable failure, worn or broken drive belt, bad transmission, broken drive wheel…
Main causes: stale gas, engine needs tune up, bad spark plug, dead battery, bad recoil starter, faulty safety switch, ba…
Main causes: dirty carburetor, bad spark plug, clogged air filter, engine choke problems, clogged gas cap vent…
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 rebuild a lawn mower carburetor
The carburetor mixes air with fuel to drive the piston. Rebuild the carburetor if it's clogged or leaks.…
Repair difficulty
Time required
60 minutes or less

How to replace a lawn mower recoil starter on an OHV engine
Replace the recoil starter if it doesn't move when you pull the starter rope.…
Repair difficulty
Time required
15 minutes or less

How to replace a lawn mower wheel
Learn how replace a damaged wheel on a walk-behind lawn mower—it's a quick, easy fix.…
Repair difficulty
Time required
15 minutes or less
Effective articles & videos to help repair your lawn & garden engines
Use the advice and tips in these articles and videos to get the most out of your walk-behind lawn mower.

Get answers to frequently asked questions about Sears and Sears PartsDirect.…

Learn about the main parts of a lawn mower and when to replace parts.…