Craftsman 917371621 lawn mower Parts

On a Craftsman walk-behind mower like model 917371621, the model number is printed on the mower’s ID label (not on the engine). Use that mower model number when ordering non-engine parts and looking up diagrams in the 917371621 owner's manual.

Where to look on the mower

Check these common ID-label locations first:

• Rear of the mower deck, near the discharge opening or rear door
• Top of the deck near the engine mounting area
• Side of the deck near a rear wheel height adjuster
• Handle support area near the lower handle brackets

What number you should use (mower vs. engine)

Many mowers have two different IDs. For parts lookup, we use the mower model number.

What you see	What it’s used for	Example for this mower
Mower model number	Deck, wheels, drive system, handle parts	917.371621 (often shown as 917371621)
Engine model/type/code	Engine-specific parts and tune-up items	Briggs & Stratton engine numbers (varies by engine)

Tips to read the label correctly

• Write the full number exactly as shown; include all digits
• Ignore punctuation; 917.371621 and 917371621 identify the same mower model
• If the label is dirty, wipe it with a damp rag; avoid scraping off the print

Why it matters

The mower model number matches the correct parts diagrams and ensures you get the right fit for items like the drive system and cutting components (for example, the lawn mower blade 532406713).

Last updated: January 2026

The model number is 917.371621 (often written without the dot as 917371621) for this Craftsman walk-behind, power-propelled 22-inch rotary lawn mower. You can confirm it on the model label and in the 917371621 owner's manual.

Where to find the model number on the mower

We recommend checking these common locations first:

• On the rear of the mower deck near the discharge opening
• On the deck under the bagger or rear door area
• Near the engine mounting area on the deck
• In the paperwork that came with the mower (manual and parts list)

Why the dot sometimes appears (917.371621 vs 917371621)

Both formats refer to the same Craftsman model; the dot is a formatting style used on some labels and manuals.

You see this	It means	Use it when
917.371621	Same model number with punctuation	Reading the ID label or manual cover
917371621	Same model number without punctuation	Searching parts diagrams and ordering parts

Why it matters when ordering parts

Using the exact model number helps us match the correct diagrams and parts for your mower, especially for drive and cutting components.

Common model-matched parts for 917371621 include:

• Lawn mower blade 532406713 (22-inch cutting blade)
• Belt 532157769 (drive belt kit)
• Lawn mower transmission assembly 532415226 (self-propel drive transmission)

Last updated: January 2026

For the Craftsman 917371621 gas walk-behind mower, use unleaded regular gasoline; the fuel tank capacity is 1.6 quarts. This matches the fuel type listed in the 917371621 owner's manual.

What to use (and what to avoid)

• Use fresh unleaded regular gasoline.
• Use fuel from a clean, approved gas can.
• Avoid old or stale gas (especially gas left over from last season).
• Avoid fuel contaminated with water, dirt, or rust.
• Do not store gasoline from one season to the next.

Quick fuel spec for this model

Item	Spec for Craftsman 917371621
Fuel type	Unleaded regular
Tank capacity	1.6 quarts

If the mower will not start after fueling

Stale fuel and fuel contamination are common causes of a no-start condition on walk-behind mowers.

• Confirm the tank has fresh gas
• Check for signs of stale fuel (strong varnish smell)
• Drain and replace fuel if it is old
• Inspect the gas can for rust or debris
• Check the air filter and spark plug condition

For a step-by-step no-start checklist, use lawn mower wont start troubleshooting video fuel ignition and compression.

Why it matters

Using the correct fuel (fresh unleaded regular) helps prevent hard starting, rough running, and carburetor or fuel-system issues that can show up after storage.

Last updated: January 2026

The Craftsman 917371621 is a 22-inch, power-propelled walk-behind mower; most mowers in this class typically weigh about 70 to 95 lb depending on engine and drive components. For the exact listed weight for your unit, check the specifications section in the 917371621 owner's manual.

How to find the exact weight in the manual

We recommend using the manual’s table of contents to jump straight to the specs section, then look for “weight” or “product specifications.”

• Open the specifications section in the manual
• Look for “Product Specifications” and scan for “weight”
• If the manual lists shipping weight and dry weight, use dry weight for handling and storage planning
• If you have added accessories (bagger, mulch plug), expect a small increase

Typical weight ranges (what to expect)

If you are planning transport, ramps, or storage shelving, these ranges help set expectations for a 22-inch self-propelled mower like model 917371621.

Mower type	Typical weight range
Push (non-propelled) 21 to 22 inch	55 to 75 lb
Self-propelled 21 to 22 inch	70 to 95 lb
Heavy-duty/self-propelled with larger wheels or bagger	85 to 110 lb

Why it matters

Knowing the mower’s weight helps you choose the right loading method, avoid handle or deck damage during lifting, and plan safe storage. It also helps when diagnosing drive issues because heavier loads can reveal belt or transmission wear sooner.

Related parts that can affect handling

These parts do not usually change the mower’s base weight much, but they can affect how it rolls and feels when moving it.

• Lawn mower wheel 532433121 (rolling resistance and stability)
• Lawn mower drive wheel 532403111 (traction and drive feel)
• Belt 532157769 (self-propelled drive performance)

Last updated: January 2026