Craftsman 917376450 lawn mower Parts

On Craftsman walk-behind mower model 917376450, the serial number is printed on a decal on the rear of the mower housing, but the owner’s documentation does not include a serial-number date-code chart. We typically estimate age by using the mower’s serial number and, when available, the Briggs & Stratton engine identification numbers.

Find the serial number and engine ID on model 917376450

Use these common locations:

• Rear of mower housing: model and serial decal (the manual calls this out)
• Engine shroud/blower housing: Briggs & Stratton model-type-code label
• Near the handle/deck area: sometimes a secondary product label

For the exact decal location and safety steps before inspecting, use the 917376450 owner’s manual.

How we estimate the mower’s age

Because the manual for model 917376450 does not provide a serial-date decoding key, we use a practical approach that works across many Craftsman walk-behind mowers:

• Start with the mower serial number: record it exactly as shown (letters, dashes, leading zeros).
• Also record the engine model/type/code: this is often the best way to narrow the build timeframe when the mower serial format is not self-explanatory.
• Compare both sets of numbers: if one label is damaged, the other can still help.

Quick comparison

Number you have	Where it’s found	What it’s best for
Mower serial number	Rear housing decal	Identifying the correct parts listing and production run
Engine model/type/code	Engine shroud label	Estimating engine build timeframe and confirming engine-specific parts

Why it matters

Knowing the approximate build timeframe helps us avoid parts mismatches when there are multiple compatible versions of wear items for the same mower model.

Parts you may be checking while dating the mower

If you are confirming age to order parts, these are common wear items to verify by model and serial:

• Blade (length and center hole pattern)
• Drive system parts (belt, pulleys, cable)
• Discharge and bagging components

Example part to verify by model compatibility: lawn mower mulching blade 532406707.

Last updated: January 2026

For the Craftsman 917376450 walk-behind mower, we recommend fresh, clean regular unleaded gasoline with a minimum of 87 octane. Using 91 octane won’t improve performance in this mower; the key is using fresh fuel and storing it correctly (see the 917376450 owner’s manual).

What the manual says for this model

The fuel guidance for Craftsman 917376450 is straightforward:

• Use unleaded regular gasoline
• Use 87 octane minimum
• Do not mix oil with gasoline
• Buy only what you can use in about 30 days to keep fuel fresh

87 vs 91: what changes (and what doesn’t)

Higher octane fuel is designed to resist knock in high-compression engines. Most walk-behind mower engines (including this model’s Briggs & Stratton 675 Series) are built to run correctly on regular fuel.

Fuel choice	OK to use?	What to expect in a mower like 917376450
87 octane (regular)	Yes	Best match for the engine’s needs
91 octane (premium)	Yes	No added power; usually just higher cost
Old/stale gas	No	Hard starting, rough running, surging
Alcohol-blended fuel stored too long	Risky	Can attract moisture and cause fuel-system issues

Tips to prevent fuel problems

We see far more mower issues caused by stale fuel than by octane choice. These habits help:

• Use fuel from a clean, approved gas can
• Keep the cap tight and store fuel in a cool, dry place
• If the mower will sit 30 days or longer, run the engine until the tank and carburetor are empty (or use stabilizer as directed)
• If the mower starts running rough after storage, drain and replace with fresh gas

For more storage-focused guidance, see how to keep lawn mower gas from going bad.

Why it matters

Using the correct fuel (87+ octane and fresh) helps your Craftsman 917376450 start easier, run smoother, and reduces carburetor and fuel-system problems that can lead to no-start or surging symptoms.

Last updated: January 2026

On the Craftsman 917376450 gas walk-behind mower, the most common problems we see are no-start or hard-start conditions, loss of self-propel drive, poor or uneven cutting, and excessive vibration. Most of these trace back to routine wear items (fuel, spark plug, air filter, blade, or drive system) and basic maintenance covered in the 917376450 owner's manual.

Common issues (and what usually causes them)

• Won’t start / starts then dies: stale fuel, dirty air filter, fouled spark plug, or water in fuel
• Loss of power: clogged deck underside, dirty air filter, cutting too much grass at once
• Uneven cut: blade wear/bend, deck packed with grass, wheel height not set evenly
• Excessive vibration: loose or damaged blade, blade adapter issues, impact damage after striking debris
• Self-propel won’t move or slows down: worn belt, loose drive control adjustment, worn drive cable

Quick checks we recommend first

1. Disconnect the spark plug wire before inspecting anything under the deck.
2. Confirm fresh unleaded fuel (used within about 30 days) and the correct oil level.
3. Inspect and clean the underside of the mower deck (built-up grass can mimic engine problems).
4. Check blade condition and tightness; replace if bent or badly worn.
5. If drive feels “loose” or speed drops, inspect the drive system and belt.

Parts that commonly solve the problem on this model

Symptom	Likely wear item	Example compatible part for 917376450
Poor cut, vibration	Blade	Lawn mower mulching blade 532406707
Won’t self-propel / slows	Drive belt	Poulan lawn mower ground drive belt, 3/8 x 33-3/16-in 532196857
Drive won’t engage	Drive cable	Lawn mower drive control cable 532407816

Why it matters

Catching these issues early helps prevent bigger failures (like damaged crankshafts from impacts or premature transmission wear). It also improves cut quality and reduces strain on the Briggs & Stratton engine used on the 917376450.

Last updated: January 2026