Expert Repair Videos

Symptoms

Troubleshoot like a pro using your model's symptoms

View symptoms

Model Number Locator

Find your model number to unlock guaranteed fit

Find my model number

917378420 Craftsman Lawn Mower - Overview

Diagrams for 917378420

See every part. Know exactly what you need.

Parts for the 917378420

Drive Belt – Part Number: 175436

Drive Belt

Part #175436

Engine Bolt – Part Number: 150406

Engine Bolt

Part #150406

E-ring – Part Number: STD581050

E-ring

Part #STD581050

Spring, sele – Part Number: 175053X004

Spring, sele

Part #175053X004

Drive Pulley – Part Number: 194126

Drive Pulley

Part #194126

Support bracket – Part Number: 175070X479

Support bracket

Part #175070X479

Lawn & Garden Equipment Washer – Part Number: 851074

Lawn & Garden Equipment Washer

Part #851074

Spring Retainer – Part Number: 150495

Spring Retainer

Part #150495

Hex Head Bolt – Part Number: 428867

Hex Head Bolt

Part #428867

Support bracket ,lh – Part Number: 421559

Support bracket ,lh

Part #421559

Pinion – Part Number: 137054

Pinion

Part #137054

Lawn Mower E-ring – Part Number: 12000058

Lawn Mower E-ring

Part #12000058

Repair Tips From Fixers Like You

See how others fixed this model. Time, tools, difficulty, and steps that lead to victory! View More

My lawn mower blade wouldn’t stay in place. The old blade adapter had worn down and broken.

3 of 19 people found this instruction helpful.

Joel from ROSEVILLE, MN
Very Easy
Less than 15 mins
Socket set

I took off the old blade adapter and put the new one on. It literally requires removing one bolt. Unfortunately, once I started and ran my mower for a few minutes it blew up and left a charred patch of lawn. The underside of the mower is mangled metal and unusable now. The repair, though, was super easy!

Was this helpful?