Is it cheaper to repair or replace a lawn mower?
For a Craftsman walk-behind mower like model 917376561, it’s usually cheaper to repair when the problem is a normal wear item (blade, air filter, spark plug, cables, wheels). It’s usually cheaper to replace when the engine or drive system needs major work, or when repair cost approaches about half the price of a comparable new mower.
Quick decision checklist
- Repair if the mower starts and runs well, but cuts poorly or handles badly
- Repair if the issue is a maintenance item the manual calls out as routine (spark plug, air filter, blade)
- Repair if the drive wheels are jammed with grass and just need cleaning
- Replace if the engine has low compression, heavy smoke, or repeated no-start after tune-up
- Replace if the drive system or gear case needs major internal service
- Replace if the deck is badly rusted or cracked (structural damage)
Typical cost comparison (walk-behind gas mower)
| Situation | Usually best choice | Why |
|---|---|---|
| Dull/bent blade, worn adapter, basic tune-up | Repair | Wear items are expected and relatively low cost |
| Mower will not self-propel due to debris in drive wheels | Repair | Cleaning often restores operation |
| Major engine repair or repeated failures | Replace | Labor and parts add up quickly versus a new mower |
| Multiple systems failing at once (drive + engine + deck) | Replace | Total repair cost typically exceeds mower value |
Model-specific tips that affect the decision
The 917376561 owner guidance emphasizes routine maintenance (at least yearly spark plug and air filter service, and checking blade wear). Staying on that schedule keeps repair costs low and extends engine life. Use the maintenance intervals and procedures in the 917376561 owner's manual.
If the mower “won’t move,” check for grass and debris packed in the drive wheel area first; the manual outlines removing the wheel hardware and cleaning the dust cover, pinion, and gear teeth. If you find damaged wheel-drive parts during that inspection, common replacements include the lawn mower wheel dust cover 581840401 and pinion 532403849.
Why it matters
Repairing a mower that only needs normal upkeep protects the engine and drive system and keeps the mower safe to use. Replacing a mower that needs major drivetrain or engine work avoids repeated downtime and unpredictable repair bills.
Last updated: January 2026
How old is my mower by serial number?
On Craftsman walk-behind mower model 917376561, the serial number itself usually does not contain a clear “build date” code you can decode; instead, we use the serial number to identify the exact production run and then confirm age using the purchase date you recorded and the model/serial decal location shown in the 917376561 owner's manual.
Where to find the serial number on this mower
The model and serial numbers are on a decal on the rear of the lawn mower housing.
Check these common spots:
- Rear of the deck housing (back edge of the mower)
- Near the height adjuster area on the deck
- Around the engine mounting area (on the deck, not the engine)
- Any secondary ID sticker near the handle brackets
How to estimate the mower’s age (practical methods)
Use the serial number as an identifier, then narrow the age using records and component date codes.
- Compare the serial number to any receipt, warranty registration, or service invoice
- Use the Date of Purchase field you wrote down in the manual’s record section
- Check the engine label (many engines have a separate date code on the engine shroud)
- Look for stamped date codes on wear parts (wheels, cables, or housings) as supporting clues
Quick comparison: what you can decode
| Identifier | Usually tells you | Where it’s found |
|---|---|---|
| Mower serial number | Production run identifier | Rear housing decal |
| Engine code/date | Engine build date | Engine shroud/label |
| Receipt/service record | In-service date | Paperwork/email |
Why it matters
Knowing the approximate age helps us match the right Craftsman parts (like a drive control cable, wheel, or dust cover) and choose maintenance intervals for fuel, oil, and blade service.
If you are already working on the drive system while dating the mower, the parts list for this model includes items like the lawn mower wheel dust cover 581840401 that commonly get replaced during wheel and drive inspections.
Last updated: January 2026
Should I use 87 or 91 gas for lawn mower?
For the Craftsman lawn mower model 917376561, use fresh regular unleaded gasoline (87 octane) for normal operation. Higher octane (like 91) is not required for performance; the bigger priority is keeping fuel clean and fresh to prevent hard-starting and rough running.
What to use (and what to avoid)
- Use 87 octane regular unleaded from a busy station (fresher fuel).
- Use fresh gas; don’t keep gasoline from one mowing season to the next.
- Keep the fuel can clean and replace it if it starts to rust (rust and dirt cause fuel problems).
- Avoid using old fuel that smells sour or looks dark.
- If the mower has been sitting with fuel, drain and refill with fresh gas before troubleshooting other issues.
Quick comparison: 87 vs 91 in a walk-behind mower
| Fuel choice | Best use | What you’ll notice |
|---|---|---|
| 87 octane (regular) | Everyday mowing | Normal starting and power when fuel is fresh |
| 91 octane (premium) | Not needed for this mower | Typically no added benefit in power or reliability |
Why it matters
Most “won’t start” and “runs rough” complaints on walk-behind mowers trace back to stale fuel, water in fuel, or dirt/rust contamination, not octane. The manual’s troubleshooting guidance specifically calls out stale fuel and water in fuel as common causes of no-start conditions.
If your mower won’t start after refueling
Follow these fast checks (in order):
- Confirm the tank has fresh gasoline.
- Check the spark plug wire is firmly connected.
- Inspect and service the air filter if it’s dirty.
- If fuel is old, empty the tank and refill with fresh gas.
- If the starter rope is hard to pull, stop and diagnose before forcing it.
Helpful DIY guidance: lawn mower pull cord stuck
For model-specific operating and maintenance details, use the 917376561 owner's manual.
Last updated: January 2026





