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Model # 10302-3900001 AND UP Official Lawn-Boy lawn mower
Here are the diagrams and repair parts for Official Lawn-Boy 10302-3900001 AND UP lawn mower, as well as links to manuals and error code tables, if available.
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10302-3900001 AND UP Walk-Behind Mowers
#12
4 cycle engine, fuel tank & blade assembly diagram
Belt, 21-in
Part #612543
Replaced by #612543-03
?
Manufacturer substitution
This part replaces 612543. Substitute parts can look different from the original.
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$31.17 |
16% OFF Phone Price : $37.17
In Stock
Wheel tire
Part #684776
Replaced by #684776
?
Manufacturer substitution
This part replaces 684776. Substitute parts can look different from the original.
This item is not returnable
$37.96 |
14% OFF Phone Price : $43.96
In Stock
#19
Rear axle assembly diagram
Washer
Part #614426
Replaced by #614426
?
Manufacturer substitution
This part replaces 614426. Substitute parts can look different from the original.
This item is not returnable
$4.31
In Stock
#9
Handle assembly diagram
Screw
Part #614697
Replaced by #614697
?
Manufacturer substitution
This part replaces 614697. Substitute parts can look different from the original.
This item is not returnable
$5.29
In Stock
#5
Gear case assembly diagram
Thrust washer
Part #36-4791
Replaced by #36-4791
?
Manufacturer substitution
This part replaces 36-4791. Substitute parts can look different from the original.
This item is not returnable
$4.00
In Stock
#1
Gear case assembly diagram
Screw
Part #32144-4
Replaced by #32144-4
?
Manufacturer substitution
This part replaces 32144-4. Substitute parts can look different from the original.
This item is not returnable
$2.66
In Stock
#8
Handle assembly diagram
Traction cable
Part #92-1041
Replaced by #92-1041
?
Manufacturer substitution
This part replaces 92-1041. Substitute parts can look different from the original.
$136.52
In Stock
#11
Rear axle assembly diagram
Ring
Part #65-4710
Replaced by #65-4710
?
Manufacturer substitution
This part replaces 65-4710. Substitute parts can look different from the original.
This item is not returnable
$4.03
In Stock
#15
Rear axle assembly diagram
Spring
Part #65-4720
Replaced by #65-4720
?
Manufacturer substitution
This part replaces 65-4720. Substitute parts can look different from the original.
This item is not returnable
$2.16
In Stock
#10
Handle assembly diagram
Knob
Part #614243
Replaced by #98-7134
?
Manufacturer substitution
This part replaces 614243. Substitute parts can look different from the original.
This item is not returnable
$3.69
In 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.…