Engine & Drivetrain

Model # 311-3500 Official Hydro-Gear transaxle

Here are the diagrams and repair parts for Official Hydro-Gear 311-3500 transaxle, as well as links to manuals and error code tables, if available.

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311-3500 Riding Mowers & Tractors
Lawn Tractor Transaxle Sealant 178322
#79

Hydro-gear transaxle diagram

Lawn tractor transaxle sealant

Part #178322

In Stock
Compression 170417
#151

Hydro-gear transaxle diagram

Compression

Part #170417

Replaced by #583001401

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Manufacturer substitution
This part replaces 170417. Substitute parts can look different from the original.
This item is not returnable
In Stock
Filter 178321
#55

Hydro-gear transaxle diagram

Filter

Part #178321

Replaced by #583087401

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Manufacturer substitution
This part replaces 178321. Substitute parts can look different from the original.
$94.27
6% OFF Phone Price : $100.27
In Stock
Seal.1" (507 161157
#75

Hydro-gear transaxle diagram

Seal.1" (507

Part #161157

Replaced by #583000201

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Manufacturer substitution
This part replaces 161157. Substitute parts can look different from the original.
$25.98
19% OFF Phone Price : $31.98
In Stock
Friction Stud 170421
#36

Hydro-gear transaxle diagram

Friction stud

Part #170421

Replaced by #582998501

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Manufacturer substitution
This part replaces 170421. Substitute parts can look different from the original.
In Stock
Spring.neutr 184702
#46

Hydro-gear transaxle diagram

Spring.neutr

Part #184702

Replaced by #583135901

?
Manufacturer substitution
This part replaces 184702. Substitute parts can look different from the original.
This item is not returnable
In Stock
Bolt.hex.1/4 193020
#132

Hydro-gear transaxle diagram

Bolt.hex.1/4

Part #193020

Replaced by #584281401

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Manufacturer substitution
This part replaces 193020. Substitute parts can look different from the original.
This item is not returnable
In Stock
Washer 169545
#144

Hydro-gear transaxle diagram

Washer

Part #169545

Replaced by #583031601

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Manufacturer substitution
This part replaces 169545. Substitute parts can look different from the original.
In Stock
Screw O-ring 169548
#157

Hydro-gear transaxle diagram

Screw o-ring

Part #169548

Replaced by #583031901

?
Manufacturer substitution
This part replaces 169548. Substitute parts can look different from the original.
In Stock
Screw 178343
#50

Hydro-gear transaxle diagram

Screw

Part #178343

Replaced by #582207101

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Manufacturer substitution
This part replaces 178343. Substitute parts can look different from the original.
This item is not returnable
In Stock

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Choose a symptom to see related window air conditioner repairs.

Main causes: bad compressor, lack of refrigerant, bad compressor start relay, electronic control board failure…

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Main causes: turning the air conditioner off and the back on too quickly, dirty or restricted condenser coil, compressor…

Main causes: lack of electrical power, bad electronic control board, wiring failure, bad temperature sensor…

Repair guides for window air conditioners

These step-by-step repair guides will help you safely fix what’s broken on your window air conditioner.

How to replace a window air conditioner ambient thermistor

How to replace a window air conditioner ambient thermistor

If your window air conditioner isn’t cooling properly, it might need a new ambient thermistor. You can replace it yourse…

Repair difficulty
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 45 minutes or less
How to replace a window air conditioner condenser fan

How to replace a window air conditioner condenser fan

If the condenser fan blade is broken or the condenser fan motor won’t run, you can replace the broken parts yourself by…

Repair difficulty
Time required
 90 minutes or less
How to replace a window air conditioner electronic control board

How to replace a window air conditioner electronic control board

The electronic control board is the brain of your window air conditioner. Here’s how to replace it.…

Repair difficulty
Time required
 45 minutes or less

Effective articles & videos to help repair your room air conditioners

Use the advice and tips in these articles and videos to get the most out of your window air conditioner.

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