Can’t find your part?   Contact us:
+1-309-603-4777
Sears Parts Direct
Orders

  • Keep track of the models you own in your profile

    Sign in or Register to view or add models

Schedule a repair
MTD
Riding Mowers & Tractors

Model # 17BSDALB099 Official MTD zero-turn riding lawn mower

Here are the diagrams and repair parts for Official MTD 17BSDALB099 zero-turn riding lawn mower, as well as links to manuals and error code tables, if available.

There are a couple of ways to find the part or diagram you need:

  • Click a diagram to see the parts shown on that diagram.
  • In the search box below, enter all or part of the part number or the part’s name.

Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

We encourage you to save the model to your profile, so it’s easy to access parts and manuals for your appliance whenever you log in.

For DIY troubleshooting advice and repair guides, visit our repair help section.

Owner’s manual
  View engine

Model diagram and schematic

SEARCH WITHIN THIS MODEL

?

This is the number corresponding to the part on the diagram / schematic

Search
ALL PARTS
Showing 10 of 424 parts  |
Lawn & Garden Equipment Cotter Pin, 1/4- To 5/16-in 714-04040
Lawn & garden equipment cotter pin, 1/4- to 5/16-in

Part #714-04040

BEST SELLER
This item is not returnable
$3.00 | 
25% OFF Phone Price : $4.00
In Stock
Yard Machines Lawn & Garden Equipment Nut 712-04064
Yard machines lawn & garden equipment nut

Part #712-04064

BEST SELLER
This item is not returnable
$4.49 | 
18% OFF Phone Price : $5.49
In Stock
Yard Machines Lawn Tractor Flange Nut (replaces 00012173, Wd-129-103) 712-04065
Yard machines lawn tractor flange nut (replaces 00012173, wd-129-103)

Part #712-04065

BEST SELLER
This item is not returnable
$5.27 | 
16% OFF Phone Price : $6.27
In Stock
Lawn Tractor Interlock Switch 725-04363
#6

Console cover/electric pto switch diagram

Lawn tractor interlock switch

Part #725-04363

BEST SELLER
$20.40 | 
23% OFF Phone Price : $26.40
In Stock
Lawn & Garden Equipment Flange Nut 712-04217
Lawn & garden equipment flange nut

Part #712-04217

BEST SELLER
This item is not returnable
$6.58 | 
13% OFF Phone Price : $7.58
In Stock
Lawn Tractor Self-tapping Screw, 5/16-18 X 3/4-in (replaces 01008620) 710-04484
Lawn tractor self-tapping screw, 5/16-18 x 3/4-in (replaces 01008620)

Part #710-04484

BEST SELLER
This item is not returnable
$4.93 | 
17% OFF Phone Price : $5.93
In Stock
Lawn Tractor Shoulder Spacer (replaces 738-04162a, 73804162c) 738-04162C
#24

Transmission diagram

Lawn tractor shoulder spacer (replaces 738-04162a, 73804162c)

Part #738-04162C

BEST SELLER
$15.71 | 
11% OFF Phone Price : $17.71
In Stock
Lawn Tractor Blade Engagement Switch 925-3233
#11

Console cover/electric pto switch diagram

Lawn tractor blade engagement switch

Part #925-3233

Replaced by #925-3233A

?
Manufacturer substitution
This part replaces 925-3233. Substitute parts can look different from the original.
BEST SELLER
$45.53 | 
12% OFF Phone Price : $51.53
In Stock
Troybilt Lawn Tractor Blade Idler Pulley Shield 783-08389
Troybilt lawn tractor blade idler pulley shield

Part #783-08389

This item is not returnable
$8.84 | 
10% OFF Phone Price : $9.84
In Stock
Troybilt Lawn Tractor Blade Idler Pulley Spacer 748-05029A
#28

Transmission diagram

Troybilt lawn tractor blade idler pulley spacer

Part #748-05029A

This item is not returnable
$7.38 | 
12% OFF Phone Price : $8.38
In Stock

RECOMMENDED MAINTENANCE PARTS AND ACCESSORIES

  • Decal 777S35375
    Decal
    $11.14
  • Decal 777S35502
    Decal
    $10.94

Most common symptoms to help you fix your riding mowers & tractors

Choose a symptom to see related riding mower and lawn tractor repairs.

View all

Why won't my riding mower cut grass?

Main causes: worn or broken blade belt, broken belt idler pulley, blade clutch cable failure, bad PTO switch, damaged ma…

Read more

How do I charge a dead battery on my riding mower?

Main causes: faulty battery, bad alternator…

Read more

How do I fix a flat tire on my riding mower?

Main causes: punctured tire or inner tube, leaky valve stem, damaged wheel rim…

Read more

Why won't my riding mower start?

Main causes: dead battery, stale fuel, bad starter solenoid, ignition system problem, bad ignition interlock switch, clo…

Read more

Why is the steering loose on my riding mower?

Main causes: damaged tie rods, bent or worn wheel spindle, worn front axle, damaged sector gear assembly…

Read more

Why does my riding mower creep in neutral?

Main causes: shift lever needs adjustment, neutral control needs adjustment…

Read more

Why does my riding mower run rough or misfire?

Main causes: clogged carburetor, damaged flywheel key, dirty spark plug, stale fuel, improper valve lash, engine needs a…

Read more

Why won't my riding mower move?

Main causes: worn or broken ground drive belt, bad seat switch, transaxle freewheel control engaged, transaxle failure, …

Read more

Why is my riding mower not cutting evenly?

Main causes: unlevel mower deck, dull or damaged cutting blades, worn mandrel pulleys, bent mower deck, engine needs tun…

Read more

Most common repair guides to help fix your riding mowers & tractors

These step-by-step repair guides will help you safely fix what’s broken on your riding mower or lawn tractor.

View all
How to replace a mandrel assembly on a riding lawn mower

How to replace a mandrel assembly on a riding lawn mower

Replace the mandrel assembly if the blade shaft vibrates or doesn't spin.…

Read more
Repair difficulty
Time required
 30 minutes or less
How to replace the flywheel key on a riding lawn mower

How to replace the flywheel key on a riding lawn mower

If the engine won't restart after hitting a stump or rock, the problem could be a sheared flywheel key. Follow these ste…

Read more
Repair difficulty
Time required
 60 minutes or less
How to replace a riding lawn mower ignition coil

How to replace a riding lawn mower ignition coil

If you're not getting spark from a good spark plug, the problem could be the ignition coil. Follow these step-by-step in…

Read more
Repair difficulty
Time required
 30 minutes or less

Effective articles & videos to help repair your riding mowers & tractors

Use the advice and tips in these articles and videos to get the most out of your riding mower or lawn tractor.

View all
How to enjoy all the online benefits we offer on our Sears PartsDirect website

How to enjoy all the online benefits we offer on our Sears PartsDirect website

Learn about all the convenient features on our Sears PartsDirect website that make your parts purchases easier.…

Read more
Top questions about Sears and Sears PartsDirect

Top questions about Sears and Sears PartsDirect

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

Read more
Riding lawn mower engine clicks but doesn't turn over video

Riding lawn mower engine clicks but doesn't turn over video

Check the starter solenoid, starter motor, wiring, battery and engine.…

Read more

Parts & More