Craftsman 917370400 lawn mower Parts

For a Craftsman walk-behind mower like model 917370400, it’s cheaper to repair when the issue is routine maintenance or a small wear part; replacement makes more sense when the repair is a major drive or engine-related cost that approaches the price of a new mower.

Quick rule of thumb (repair vs replace)

• Repair when the mower still starts/runs well and needs normal upkeep (blade, belt, wheel drive cleaning).
• Replace when the engine has low power/compression, the deck is badly rusted/cracked, or repeated repairs keep stacking up.
• Repair when you can restore safe cutting and drive performance with basic service steps from the 917370400 owner’s manual.
• Replace when a shop quote for major work is close to the cost of a comparable new walk-behind mower.
• Repair when the fix is clearly isolated (for example, a worn drive belt or a dull/bent blade).

Common “worth repairing” fixes on this model

Many performance complaints come from maintenance items the manual calls out, such as keeping the blade sharp, cleaning under the deck, and servicing the drive area.

• Sharpen or replace the blade (a bent blade should be replaced)
• Clean under the deck and around the drive cover area
• Clean debris from the drive wheels, dust cover, and gear teeth
• Replace a worn drive belt such as the belt 532157769
• Replace a worn blade such as the lawn mower 22-in deck mulching blade 532406713

Cost comparison checklist

Use this simple comparison to decide based on total cost and mower condition.

Situation	Usually best choice	Why
Blade is dull, mower cuts uneven	Repair	Low-cost maintenance restores cut quality
Mower “won’t move” but engine runs	Repair first	Often belt, cable, or wheel-drive debris
Engine runs poorly even after tune-up basics	Replace	Major engine work can exceed mower value
Deck is damaged or unsafe	Replace	Structural issues affect safety and cut

Why it matters

A mower that is poorly maintained can cut badly, bog down in grass, and wear out drive components faster. The manual also emphasizes safe servicing practices (for example, avoid adjustments with the engine running and use caution around sharp blades), so choosing the right repair can improve both performance and safety.

Last updated: February 2026

On the Craftsman 917370400 walk-behind mower, the most common repairs are no-start or hard-start issues, rough running or surging, loss of power, and drive problems (mower will not self-propel). These usually trace back to basic maintenance items, blade condition, and drive-wheel or belt wear; see the 917370400 owner's manual for model-specific maintenance and safety steps.

Most common repairs and what typically causes them

• Will not start / hard to start: old fuel, fouled spark plug, dirty air filter, or a stuck pull cord
• Surging or rough running: fuel restriction, dirty carburetor passages, or air leaks (carburetor is not adjustable on this mower)
• Loss of power: clogged deck, dull blade, dirty air filter, or fuel delivery issues
• Poor cut quality / vibration: bent or dull blade, damaged blade adapter key, loose blade bolt
• Self-propelled will not move: debris in drive wheels, worn drive belt, worn transmission components

Quick checks we recommend first (fast, low-cost)

1. Disconnect the spark plug wire before service (per the manual).
2. Confirm the blade bolt and hardware are tight.
3. Clean grass and debris from the deck and drive-wheel area.
4. Inspect the blade for dullness, bends, or damage.
5. If self-propel is weak, inspect the belt and drive wheels.

Parts that commonly get replaced on this model

Symptom	Commonly involved area	Example part for 917370400
Poor cut, tearing grass	Blade	Lawn mower 22-in deck mulching blade 532406713
Mower will not self-propel	Drive belt	Belt 532157769
Drive wheels bind or slip	Wheel gear area	Pinion.14.te 532403849

Why it matters

Catching these issues early prevents bigger failures. For example, running with a dull or damaged blade increases vibration, can loosen hardware, and can damage the blade adapter key and crankshaft area.

Safety notes that apply to most repairs

• Disconnect the spark plug wire and keep it away from the plug to prevent accidental starting.
• Never adjust wheel height with the engine running.
• Use gloves or wrap the blade when handling it.

Last updated: February 2026

A well-maintained gas walk-behind mower like the Craftsman 917370400 typically lasts 8 to 10 years. Regular cleaning, correct fuel practices (including staying at 10% ethanol or less), and end-of-season storage steps are what most often determine whether you reach the high end of that range.

What most affects mower lifespan

• Fuel quality and storage: Use fresh gas; avoid fuel over E10.
• Cooling and cleanliness: Keep debris off the engine and under the deck.
• Blade condition: A sharp, balanced blade reduces engine load.
• Fastener checks: Tighten loose nuts, bolts, and screws to prevent wear.
• Seasonal storage: Prep the mower if it will sit 30+ days.

Maintenance schedule we recommend

Task	How often	Why it matters
Scrape underside of deck	After each use	Prevents corrosion and drag that strains the engine
Clean under drive cover	At least twice per season	Helps the drive system run cooler and smoother
Clear debris from engine area	Often (every few mows)	A clogged engine runs hotter and shortens engine life
Storage prep (end of season)	Once per season	Prevents rust, fuel issues, and hard starting

Quick tips that add years

• Let the engine cool before covering or storing.
• Do not wash the mower with a hose unless sensitive areas are protected from water.
• If storing, follow the cylinder oiling step through the spark plug hole as outlined in the 917370400 owner’s manual.
• Replace worn drive components early; a slipping belt can overwork the transmission (see belt 532157769 if you need the correct drive belt kit for this model).

Why it matters

Most “worn out” gas mowers fail early from heat, dirty buildup, stale fuel, or neglected storage. Keeping the deck clean and the engine area clear reduces load and operating temperature, which directly extends engine life.

Last updated: February 2026

The Craftsman lawn mower model 917370400 does not have its build year encoded in the model number itself. To find the year, we use the mower’s product ID/serial number (typically on a decal on the deck or rear housing) and match it to the date-code format shown in the 917370400 owner's manual.

How to find the year on your mower

Use the identification decal on the mower, not the model number.

• Look for a sticker or stamped tag on the mower deck, rear door area, or near the handle brackets
• Write down the product number and serial number exactly as shown
• If the serial includes a date code, read it as month, day, year (common format on many Craftsman walk-behind mowers)
• If the decal is worn, clean the area gently and use a flashlight to read faint printing
• Keep the numbers for ordering parts like a blade, belt, or transmission components

Date-code example (how to interpret it)

Many Craftsman mower serial/date codes are read in pairs.

Code format	What it means	Example	Example date
MMDDYY	Month, day, year	072811	July 28, 2011
MMDDYY (on serial tag)	Often embedded in serial	041915	April 19, 2015

Why it matters

The year helps when you are matching the correct version of parts and hardware for your 22-inch rear discharge mower, especially items that change across production runs (drive system pieces, wheel adjusters, and handle hardware).

Parts that commonly depend on the exact version

• Blade style (standard vs mulching)
• Drive components (belt, pawls, pinion)
• Wheel and height adjuster parts
• Control cable and control bar parts

If you are replacing wear items while you confirm the date code, common model-matched examples include the lawn mower 22-in deck mulching blade 532406713 and the belt 532157769.

Last updated: February 2026

On a Craftsman walk-behind mower like model 917370400, the model number is printed on the mower’s identification label, typically on the deck or frame area. Use the model number exactly as shown to match the correct parts list and diagrams in the 917370400 owner's manual.

Common places to check on a walk-behind mower

Look for a sticker or metal tag in these spots:

• On the rear of the mower deck near the bagger opening or rear door area
• On the side of the deck near a rear wheel height adjuster
• On the frame near the rear wheels
• Near the engine mounting area (close to where the engine bolts to the deck)
• Under the handle mounting area (where the upper handle attaches)

What the label usually shows

Most Craftsman mower ID labels include several fields. Here is what to look for:

Label item	What it means	Example for this mower
Model number	Identifies the mower platform	917.370400
Engine info	Identifies the engine family/type	Briggs and Stratton (varies by build)
Serial number	Identifies your specific unit	Unique to your mower

Why it matters

We use the model number to pull the correct exploded-view diagrams and ensure parts like the blade, drive belt, wheels, and transmission components match your exact build. Even small model-number differences can change the deck, drive system, or hardware.

Quick tips before you order parts

• Copy the model number exactly, including dots or dashes
• If the label is dirty, wipe it with a damp rag and mild detergent
• If the label is faded, take a close-up photo in bright light and zoom in
• Cross-check the model number against the cover page of the 917370400 owner's manual

Last updated: February 2026