Front-Engine Lawn Tractor

Model # 98725943 Official Troybilt 12-hp hydro tractor

Here are the diagrams and repair parts for Official Troybilt 98725943 12-hp hydro tractor, as well as links to manuals and error code tables, if available.

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98725943 Riding Mowers & Tractors
Lock Washer 1185140
#27

Engine diagram

Lock washer

Part #1185140

Replaced by #936-0119

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Manufacturer substitution
This part replaces 1185140. Substitute parts can look different from the original.
This item is not returnable
$6.05
14% OFF Phone Price : $7.05
In Stock
Lock Nut 1110150
#49

Frame, lift and steering assembly diagram

Lock nut

Part #1110150

Replaced by #712-0214

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Manufacturer substitution
This part replaces 1110150. Substitute parts can look different from the original.
In Stock
Bolt 1736098
Bolt

Part #1736098

Replaced by #710-0260A

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Manufacturer substitution
This part replaces 1736098. Substitute parts can look different from the original.
This item is not returnable
$6.55
13% OFF Phone Price : $7.55
Back Order
Lock Nut 1732499
#83

Hydrostatic & brake assembly diagram

Lock nut

Part #1732499

Replaced by #712-3004A

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Manufacturer substitution
This part replaces 1732499. Substitute parts can look different from the original.
This item is not returnable
$4.92
17% OFF Phone Price : $5.92
In Stock
Pto Switch 1754608
#31

Electrical diagram

Pto switch

Part #1754608

Replaced by #1754608

?
Manufacturer substitution
This part replaces 1754608. Substitute parts can look different from the original.
$80.83
7% OFF Phone Price : $86.83
In Stock
Grease Fitting 1185976
#63

Frame, lift and steering assembly diagram

Grease fitting

Part #1185976

Replaced by #937-0146

?
Manufacturer substitution
This part replaces 1185976. Substitute parts can look different from the original.
In Stock
Nut 1186391
Nut

Part #1186391

Replaced by #712-04054

?
Manufacturer substitution
This part replaces 1186391. Substitute parts can look different from the original.
In Stock
Washer 1715301
#40

Frame, lift and steering assembly diagram

Washer

Part #1715301

Replaced by #1715301

?
Manufacturer substitution
This part replaces 1715301. Substitute parts can look different from the original.
In Stock
Solenoid 1752137
#19

Electrical diagram

Solenoid

Part #1752137

Replaced by #1752137P

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Manufacturer substitution
This part replaces 1752137. Substitute parts can look different from the original.
$84.95
7% OFF Phone Price : $90.95
In Stock
Cap Screw 1186309
Cap screw

Part #1186309

Replaced by #1186309

?
Manufacturer substitution
This part replaces 1186309. Substitute parts can look different from the original.
This item is not returnable
In Stock

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

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

Main causes: faulty battery, bad alternator…

Main causes: damaged cutting blade, worn deck pulley, damaged mandrel pulley, loose fasteners on mower deck components…

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

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

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

Main causes: engine overfilled with oil, leaky head gasket or sump gasket, damaged carburetor seals, cracked fuel pump, …

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

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

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

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.

How to replace the starter motor on a riding lawn mower

How to replace the starter motor on a riding lawn mower

If you hear the solenoid click but don’t hear the starter motor spin when you turn the key, follow these steps to replac…

Repair difficulty
Time required
 30 minutes or less
How to rebuild a riding lawn mower carburetor

How to rebuild a riding lawn mower carburetor

Get your sputtering carburetor running smoothly in 60 minutes.…

Repair difficulty
Time required
 60 minutes or less
How to replace a riding lawn mower rear tire

How to replace a riding lawn mower rear tire

Your mower can’t run on a damaged rear tire. Here’s how to install a new one.…

Repair difficulty
Time required
 60 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.

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.…

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.…

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.…