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MTD
Log Splitter

Model # 638 Official MTD log splitter

Here are the diagrams and repair parts for Official MTD 638 log splitter, as well as links to manuals and error code tables, if available.

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Showing 10 of 65 parts  |
Unknown Brand Name #689 Lawn Tractor Flat Washer 736-0262

#104

All parts diagram

Unknown brand name #689 lawn tractor flat washer

Part #736-0262

This item is not returnable
$5.11 | 
16% OFF Phone Price : $6.11
In Stock
Sears Snowblower Flat Washer (replaces 936-0159) 736-0159

#90

All parts diagram

Sears snowblower flat washer (replaces 936-0159)

Part #736-0159

This item is not returnable
$5.73 | 
15% OFF Phone Price : $6.73
In Stock
Unknown Brand Name #689 Log Splitter Hub Cap 734-0873

#3

All parts diagram

Unknown brand name #689 log splitter hub cap

Part #734-0873

This item is not returnable
$20.51
In Stock
Unknown Brand Name #689 Log Splitter Pressure Tube Pipe Nipple, 1/2-in 737-0238

#9

All parts diagram

Unknown brand name #689 log splitter pressure tube pipe nipple, 1/2-in

Part #737-0238

This item is not returnable
$33.43 | 
15% OFF Phone Price : $39.43
In Stock
Yard Machines Lawn Tractor Hex Bolt 710-0521

#39

All parts diagram

Yard machines lawn tractor hex bolt

Part #710-0521

This item is not returnable
$8.97
In Stock
Log Splitter Adjustable Gib (replaces 781-0351-0637, 781-0637) 781-0351

#26

All parts diagram

Log splitter adjustable gib (replaces 781-0351-0637, 781-0637)

Part #781-0351

This item is not returnable
$29.03 | 
17% OFF Phone Price : $35.03
In Stock
Cotter Pin 714-0470

#66

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Cotter pin

Part #714-0470

This item is not returnable
$6.17
In Stock
Yard Machines Lawn Tractor Bolt (replaces 01000668, 1982728, 1983620, 43001, 715326, 910-0253, 9711, B1100046, Gw-325284, Gw-750a, Gw-90012, Gw-9711, Gw-98068, Gw-98-068, Gw-b1100046, Gw-b70235, Gw-m6520008, Gw-pt/01395/00, Gw-pt/80153/00, Gw-t70235, Wd- 710-0514

#12

All parts diagram

Yard machines lawn tractor bolt (replaces 01000668, 1982728, 1983620, 43001, 715326, 910-0253, 9711, b1100046, gw-325284, gw-750a, gw-90012, gw-9711, gw-98068, gw-98-068, gw-b1100046, gw-b70235, gw-m6520008, gw-pt/01395/00, gw-pt/80153/00, gw-t70235, wd-

Part #710-0514

This item is not returnable
$5.33 | 
16% OFF Phone Price : $6.33
In Stock
Unknown Brand Name #689 Log Splitter Tire 734-0872

#4B

All parts diagram

Unknown brand name #689 log splitter tire

Part #734-0872

$177.66 | 
6% OFF Phone Price : $189.66
In Stock
Lawn & Garden Equipment Hex Head Screw 710-0895

#106

All parts diagram

Lawn & garden equipment hex head screw

Part #710-0895

$8.20 | 
11% OFF Phone Price : $9.20
In Stock

Most common symptoms to help you fix your log splitters

Choose a symptom to see related log splitter repairs.

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Why does my log splitter's hydraulic cylinder leak?

Main cause: worn hydraulic cylinder seals…

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Why does my log splitter's hydraulic valve leak?

Main cause: worn hydraulic valve seals around the actuator rod…

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Why won't my log splitter's hydraulic cylinder extend the wedge?

Main causes: broken pump coupler, clogged hydraulic fluid filter, bad hydraulic control valve, broken hydraulic pump, ba…

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Why does my log splitter's engine leaks oil or gas?

Main causes: leaky head gasket, damaged sump gasket, leaky oil drain plug, damaged fuel line, bad carburetor seals…

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Why does my log splitter's hydraulic pump leak?

Main cause: worn hydraulic pump seals…

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Why does my log splitter's engine run rough or misfire?

Main causes: dirty carburetor, bad spark plug, clogged air filter, stale fuel…

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Why won't my log splitter's engine start?

Main causes: dirty carburetor, stale fuel, bad spark plug, broken recoil starter…

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Most common repair guides to help fix your log splitters

These step-by-step repair guides will help you safely fix what’s broken on your log splitter.

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How to replace a log splitter flexible pump coupler

How to replace a log splitter flexible pump coupler

The flexible nylon log splitter pump coupler deteriorates over time. Replace the flexible pump coupler if it begins to v…

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Repair difficulty
Time required
 15 minutes or less
How to replace a log splitter recoil starter

How to replace a log splitter recoil starter

The recoil starter spins the engine on the log splitter when you pull the starter rope, and the rope retracts when relea…

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Repair difficulty
Time required
 15 minutes or less
How to replace a log splitter carburetor

How to replace a log splitter carburetor

The carburetor mixes air and gas before the fuel mix goes to the engine. If the engine won't start and the spark plug is…

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Repair difficulty
Time required
 30 minutes or less

Effective articles & videos to help repair your log splitters

Use the advice and tips in these articles to get the most out of your log splitter.

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Find the right carburetor assembly for a Craftsman snowblower, tiller or log splitter

Find the right carburetor assembly for a Craftsman snowblower, tiller or log splitter

This chart will help you find the right carburetor for your Craftsman snowblower, tiller or log splitter.…

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How to maintain the hydraulic system in a log splitter

How to maintain the hydraulic system in a log splitter

See how to properly maintain the hydraulic system in your log splitter.…

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How to change the hydraulic fluid in a log splitter

How to change the hydraulic fluid in a log splitter

Learn how to change the hydraulic fluid in your log splitter.…

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