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Companion
Front-Engine Lawn Tractor

Model # 917278040 Official Companion lawn tractor

Here are the diagrams and repair parts for Official Companion 917278040 lawn tractor, as well as links to manuals and error code tables, if available.

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  • 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”.

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Owner’s manual
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Model diagram and schematic

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ALL PARTS
Showing 10 of 505 parts  |
Lawn Tractor Axle Cap 104757X428
#11

Wheels and tires diagram

Lawn tractor axle cap

Part #104757X428

Replaced by #532104757

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Manufacturer substitution
This part replaces 104757X428. Substitute parts can look different from the original.
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Lawn Tractor Bolt 173984
#30

Mower diagram

Lawn tractor bolt

Part #173984

Replaced by #584953901

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Manufacturer substitution
This part replaces 173984. Substitute parts can look different from the original.
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Lawn Tractor Ground Drive Belt, 1/2 X 82-in 140294
#57

Drive diagram

Lawn tractor ground drive belt, 1/2 x 82-in

Part #140294

Replaced by #532140294

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Manufacturer substitution
This part replaces 140294. Substitute parts can look different from the original.
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$32.99 | 
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Solenoid With Brass Plunger 178861
#43

Electrical diagram

Solenoid with brass plunger

Part #178861

Replaced by #532146154

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Manufacturer substitution
This part replaces 178861. Substitute parts can look different from the original.
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$26.61 | 
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Tower Lawn Tractor Ignition Switch (replaces 163968, 189687, 5321755-66, 5321896-87, 539107541) 175566
#30

Electrical diagram

Tower lawn tractor ignition switch (replaces 163968, 189687, 5321755-66, 5321896-87, 539107541)

Part #175566

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Vented Mandrel Shaft Assembly 137645
#13

Mower diagram

Vented mandrel shaft assembly

Part #137645

Replaced by #532137646

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Manufacturer substitution
This part replaces 137645. Substitute parts can look different from the original.
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$27.68 | 
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Lawn Tractor Wheel Rim, Front 106732X417
#5

Wheels and tires diagram

Lawn tractor wheel rim, front

Part #106732X417

Replaced by #532106732

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Manufacturer substitution
This part replaces 106732X417. Substitute parts can look different from the original.
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Lawn Tractor Bearing 3366R
#9

Steering assembly diagram

Lawn tractor bearing

Part #3366R

Replaced by #532003366

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Manufacturer substitution
This part replaces 3366R. Substitute parts can look different from the original.
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Zinc Retainer Spring 163552
#20

Mower lift diagram

Zinc retainer spring

Part #163552

Replaced by #532003146

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Manufacturer substitution
This part replaces 163552. Substitute parts can look different from the original.
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Tie Rod 130465
#32

Steering assembly diagram

Tie rod

Part #130465

Replaced by #192757

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Manufacturer substitution
This part replaces 130465. Substitute parts can look different from the original.
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$22.31 | 
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