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

  • Keep track of the models you own in your profile

    Sign in or Register to view or add models

Schedule a repair
Craftsman
Gas Line Trimmer

Model # 917773421 Official Craftsman high wheel line trimmer

Here are the diagrams and repair parts for Official Craftsman 917773421 high wheel line trimmer, 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 221 parts  |
Plate Assembly 174544
#34

Chassis assembly diagram

Plate assembly

Part #174544

Replaced by #594935003

?
Manufacturer substitution
This part replaces 174544. Substitute parts can look different from the original.
BEST SELLER
$55.37 | 
10% OFF Phone Price : $61.37
In Stock
Bearing Cover 172516
#36

Chassis assembly diagram

Bearing cover

Part #172516

Replaced by #532172516

?
Manufacturer substitution
This part replaces 172516. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
$9.31 | 
10% OFF Phone Price : $10.31
In Stock
Line Trimmer Return Spring 173811
#15

Chassis assembly diagram

Line trimmer return spring

Part #173811

Replaced by #532173811

?
Manufacturer substitution
This part replaces 173811. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
$5.31 | 
16% OFF Phone Price : $6.31
In Stock
Locking Plate 172519
#33

Chassis assembly diagram

Locking plate

Part #172519

Replaced by #532172519

?
Manufacturer substitution
This part replaces 172519. Substitute parts can look different from the original.
This item is not returnable
$6.64 | 
13% OFF Phone Price : $7.64
In Stock
Jackshaft 172520
#28

Chassis assembly diagram

Jackshaft

Part #172520

Replaced by #532172520

?
Manufacturer substitution
This part replaces 172520. Substitute parts can look different from the original.
This item is not returnable
$34.98 | 
15% OFF Phone Price : $40.98
In Stock
Drive Control 174037
#28

Engine diagram

Drive control

Part #174037

Replaced by #583061601

?
Manufacturer substitution
This part replaces 174037. Substitute parts can look different from the original.
$39.98 | 
13% OFF Phone Price : $45.98
In Stock
Rope Guide 153638
#16

Engine diagram

Rope guide

Part #153638

Replaced by #586122501

?
Manufacturer substitution
This part replaces 153638. Substitute parts can look different from the original.
This item is not returnable
$15.59 | 
11% OFF Phone Price : $17.59
In Stock
Debris Shield 170552
#16

Chassis assembly diagram

Debris shield

Part #170552

Replaced by #532180268

?
Manufacturer substitution
This part replaces 170552. Substitute parts can look different from the original.
$37.98 | 
14% OFF Phone Price : $43.98
In Stock
Mow Ball Bolt 172636
#39

Chassis assembly diagram

Mow ball bolt

Part #172636

Replaced by #532180334

?
Manufacturer substitution
This part replaces 172636. Substitute parts can look different from the original.
This item is not returnable
$11.97
In Stock
Lawn Mower Idler Pulley 166043
#9

Chassis assembly diagram

Lawn mower idler pulley

Part #166043

Replaced by #532166043

?
Manufacturer substitution
This part replaces 166043. Substitute parts can look different from the original.
$37.31
In Stock

Symptoms for gas line trimmers

Choose a symptom to see related grass line trimmer repairs.

View all

Why does my gas line trimmer run rough?

Main causes: stale fuel, clogged fuel filter, faulty spark plug, clogged air filter, cracked fuel lines, clogged carbure…

Read more

Why won't my gas line trimmer start?

Main causes: stale fuel, cracked fuel lines, dirty carburetor, bad spark plug, worn piston rings…

Read more

Why does my gas line trimmer leak gas?

Main causes: cracked fuel lines, bad carburetor seals, leaky fuel tank cap, damaged fuel tank…

Read more

Repair guides for gas line trimmers

These step-by-step repair guides will help you safely fix what’s broken on your grass line trimmer.

View all
How to rebuild a line trimmer carburetor

How to rebuild a line trimmer carburetor

If the line trimmer engine won't start even though there's fuel in the tank, the carburetor could be the problem. Follow…

Read more
Repair difficulty
Time required
 15 minutes or less
How to replace a line trimmer carburetor

How to replace a line trimmer carburetor

If the line trimmer won't start even though there's fuel in the tank, the carburetor could be the problem. Follow these …

Read more
Repair difficulty
Time required
 15 minutes or less
How to replace a line trimmer fuel line

How to replace a line trimmer fuel line

The fuel line on a grass line trimmer deteriorates with time and eventually can split or crack. You can replace it yours…

Read more
Repair difficulty
Time required
 15 minutes or less

Articles and videos for gas line trimmers

Use the advice and tips in these articles and videos to get the most out of your grass line trimmer.

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
Solving 3 common problems with line trimmer cutting lines

Solving 3 common problems with line trimmer cutting lines

Follow these tips to prevent the cutting line on your grass line trimmer from breaking or feeding out too much or too li…

Read more
How to replace a line trimmer fuel line video

How to replace a line trimmer fuel line video

Follow the steps in this video to replace a leaking fuel line in a line trimmer.…

Read more

Parts & More