Craftsman 917379370 lawn mower Parts

On the Craftsman walk-behind mower model 917379370, the model and serial numbers are printed on a decal on the rear of the mower housing (rear of the deck). We use that exact model number to match the correct parts list and owner’s manual.

Where to look on model 917379370

Check these common spots on the mower deck:

• Rear of the mower housing (most common on this model)
• Back edge of the deck, near the lower handle mounting points
• Decal area that may be partially covered by grass buildup or dirt

Quick steps to find and record it

1. Turn the mower off and let the engine cool.
2. Tip the handle back for better access to the rear of the deck (do not tip the mower onto the air filter side).
3. Wipe the rear housing area with a damp rag.
4. Write down both the model number and serial number exactly as shown.

What the numbers are used for

What you’re doing	Why the model number matters	Example for this mower
Ordering parts	Ensures correct fit and hardware	Model 917379370
Looking up diagrams	Matches the right exploded views	Drive system, handle, deck
Following specs	Confirms oil type, plug, torque	Listed in the manual

Why it matters

Craftsman walk-behind mowers can look similar across years, but small changes in the deck, drive system, and handle controls affect which blade, belt, or cable fits. Using the exact model number prevents wrong-part returns and repeat repairs.

For model-specific identification details and specs, use the 917379370 owner’s manual.

Last updated: January 2026

For a Craftsman walk-behind mower like model 917379370, it’s usually cheaper to repair routine wear items (blade, belt, spark plug, air filter). Replacement makes more sense when the engine or drive system needs major work or when repair cost approaches about half the price of a comparable new mower.

Quick way to decide

Use these checkpoints before spending money on parts or labor:

• Repair when the mower starts and runs but cuts poorly, vibrates, or has minor drive issues.
• Repair when the fix is a normal maintenance item (blade, belt, cable, wheel parts).
• Replace when the engine has low compression, heavy smoke, or repeated no-start issues after tune-up.
• Replace when the drive system/transmission repair is extensive and parts plus labor are high.
• Replace when the deck is badly rusted/cracked or the crankshaft is bent (often from striking an object).

For model-specific maintenance intervals and safety steps (like disconnecting the spark plug wire before service), follow the 917379370 owner’s manual.

Typical repair costs vs. what you get

These are common walk-behind mower repair categories and what they usually mean in practice.

Issue type	Common symptoms	Usually the better choice
Routine wear items	Dull cut, uneven cut, slipping self-propel	Repair
Blade and adapter wear	Vibration, blade won’t stay tight	Repair
Drive wear	Mower won’t pull itself consistently	Repair first, then reassess
Major engine problem	Won’t start after tune-up, smokes, knocks	Replace

Parts that are usually worth repairing first

On the 917379370, these are the kinds of parts we typically replace before considering a new mower:

• Blade.22.mul 532406713 if cutting is ragged or the mower leaves uncut strips
• Belt 532157769 if self-propel slips or stops under load
• Lawn mower drive control cable 532194653 if the drive control feels loose or won’t engage
• Lawn mower blade adapter 581547901 if the blade mounting is worn or won’t stay secure

Why it matters

This mower’s warranty and long-term reliability depend on regular maintenance and safe servicing practices. The manual also notes that common “expendable” items (like blades, blade adapters, belts, air cleaners, and spark plugs) are normal wear items, so repairing those is often the most cost-effective path.

Last updated: January 2026

A well-maintained gas walk-behind mower like Craftsman model 917379370 typically lasts 8 to 10 years. Consistent oil changes, cleaning, and replacing normal-wear items (blade, belt, air filter, spark plug) are what most directly determine how long the mower stays reliable.

What most affects mower lifespan

• Oil maintenance: change engine oil about every 25 hours of use or at least once per year.
• Keeping the engine clean: built-up debris makes the engine run hotter and shortens engine life.
• Deck cleaning: scrape grass buildup from the underside after each use.
• Storage habits: clean, lubricate, and store in a clean, dry area when not used for 30+ days.
• Replacing wear parts on time: blades, blade adapters, belts, air cleaners, and spark plugs wear out in normal use.

Maintenance schedule (typical for this mower)

Use the 917379370 owner's manual for the exact procedure and safety steps.

Task	When to do it	Why it matters
Check oil level	Before starting; after extended use	Prevents low-oil engine damage
Change engine oil	Every 25 hours or yearly	Extends engine life
Clean underside of deck	After each use	Prevents corrosion and poor cutting
Clean under drive cover	At least twice per season	Helps self-propel drive work correctly
Inspect/replace wear items	As needed	Prevents breakdowns and poor performance

Parts that commonly wear out

These are normal replacement items that help keep a 917379370 running strong:

• Blade.22.mul 532406713 (dull or bent blade causes poor cut and extra engine load)
• Belt 532157769 (worn belt can cause weak or no self-propel)
• Lawn mower blade adapter 581547901 (damage can cause vibration and blade fit issues)

Why it matters

Most “mower life expectancy” problems are really maintenance problems. Keeping oil fresh, airflow clear, and the cutting system balanced reduces heat, vibration, and strain on the engine and drive system, which is what gets you to that 8 to 10 year range.

Last updated: January 2026