Craftsman 917273621 lawn tractor Parts

The model number for this Craftsman front-engine lawn tractor is 917.273621 (often written without the dot as 917273621). You can also confirm it in the tractor’s documentation, where it’s listed on the electrical and chassis diagrams in the 917273621 owner's manual.

We recommend matching the number on the tractor’s ID label to the manual so you order the right parts (like a PTO switch, ignition key, or ground drive belt).

• Look under the seat area near the fender/footrest
• Check the frame rail near the engine compartment
• Look around the dash or steering pedestal area
• Match the full number, including any dots or spacing

Some Craftsman tractors have very similar model numbers, and a single digit change points to a different parts list.

Using the exact model number ensures parts fit and function correctly, especially for electrical and drive components. For example, the manual lists a PTO switch as part number 174652, and our matching replacement is the switch.pto 582107601.

Last updated: February 2026

For a Craftsman lawn tractor model 917273621, a full engine replacement typically costs about $600 to $2,500 installed (engine plus labor). The biggest cost drivers are the engine type, whether the wiring and pulleys transfer over cleanly, and how much teardown is required.

• Engine cost: Most replacement riding mower engines land around $300 to $1,800 depending on brand, horsepower, and shaft specs.
• Labor time: A riding mower engine swap commonly runs 4 to 8 hours.
• Extra parts: Belts, pulleys, wiring repairs, and fuel system cleanup often add cost.
• Shop rates: Local labor rates vary widely.
• Condition of the tractor: Rusted fasteners, damaged harnesses, or worn mounts increase time.

Many “needs an engine” symptoms are caused by starting, safety, or fuel issues. Our 917273621 manual troubleshooting chart calls out checks like the brake pedal position, battery condition, fuse, wiring, ignition switch, and solenoid or starter. Use the 917273621 owner's manual to walk through those steps in order.

• Recharge or replace the battery, then clean battery terminals
• Check and replace the fuse if blown
• Inspect wiring connections for looseness or damage
• Test the ignition switch and starter solenoid
• Drain stale fuel and replace the fuel filter; check spark plug and plug wire

An engine replacement is one of the highest-cost repairs on a riding mower. Verifying the battery, wiring, ignition, and fuel system first prevents spending engine-level money on a problem that a switch, solenoid, or tune-up would fix.

Last updated: February 2026

On a Craftsman riding mower like model 917273621, we look up the model number by finding the model and serial tag on the tractor frame under the seat area (often on the frame rail) or on the underside of the seat, then matching that number when ordering parts or checking specifications in the 917273621 owner's manual.

Check these common locations first:

• On the frame under the seat (lift the seat and look down at the frame rails)
• On the underside of the seat pan
• Near the rear fender area close to the seat mounting points
• On a label plate that includes both model and serial information

Use the model number exactly as shown on the tag (including all digits).

These quick checks prevent most fit issues:

• Confirm the model number is complete (no missing digits)
• Compare the part description to your tractor’s component (deck, steering, drive)
• Use the manual parts lists and diagrams to verify placement and hardware
• If you are servicing the drive system, match belt size and routing before ordering (for example, the lawn tractor ground drive belt, 1/2 x 82-in 532140294)

Craftsman tractors can look similar across years, but parts like belts, pulleys, and steering components vary by model number. Using 917273621 ensures you get the correct Craftsman lawn tractor parts and specifications for your exact machine.

Last updated: February 2026

For Craftsman lawn tractor model 917273621, the owner’s manual identifies it as a 24.0 HP tractor with a low-emission engine. The manual focuses on operation and maintenance; for the exact engine manufacturer and model (such as Briggs & Stratton or Kohler), we use the engine ID label on your engine and the specs listed in the 917273621 owner’s manual.

Use these quick checks (no special tools needed):

• Look for the engine ID sticker/plate on the blower housing, valve cover, or near the starter
• Write down model, type, and code (common on Briggs & Stratton) or spec number (common on Kohler)
• Match the engine label info to the parts list and tune-up items you buy (spark plug, air filter, oil filter)
• If the label is dirty, wipe it gently; avoid spraying water directly into electrical connectors
• If the label is missing, use the tractor’s model number 917273621 plus the engine’s visible features (carb style, filter housing shape) to narrow it down

The manual confirms the tractor is a 24.0 HP, 48-inch mower with electric start and automatic transmission.

The engine brand and spec number determine the correct maintenance parts and settings (spark plug type/gap, air filter style, oil filter, and carburetor parts). Using the engine label prevents ordering the wrong tune-up parts even when the tractor model number is correct.

If the engine cranks or runs inconsistently, these tractor parts often get involved:

• Ignition key: molded ignition key 532140403
• Blade engagement circuit (can affect starting on some setups): switch.pto 582107601

Last updated: February 2026

Craftsman uses engines from multiple manufacturers across its riding mowers and lawn tractors. For Craftsman model 917273621, the correct way to confirm the engine brand is to read the engine’s ID label (model and spec/code) and cross-check it with the 917273621 owner's manual.

Depending on the year and configuration, Craftsman tractors commonly use engines from:

• Briggs & Stratton
• Kohler
• Kawasaki
• Other OEM suppliers used on certain production runs

Use the engine identification tag, not the tractor model tag. On most lawn tractor engines, you can find it on one of these areas:

• Top shroud or blower housing
• Valve cover area
• Engine block near the starter
• Side of the engine near the muffler

Write down the full set of numbers on the tag (typically engine model plus a spec/code). That information identifies the engine maker and the exact engine build.

The engine brand and spec/code determine the correct maintenance and repair parts. For example, a ground drive belt such as the lawn tractor ground drive belt, 1/2 x 82-in 532140294 fits the tractor, but spark plugs and air filters must match the engine’s exact model.

Last updated: February 2026

For your Craftsman lawn tractor model 917273621, the most reliable way to identify the build year is to read the product identification tag (model and serial) and decode the serial number date code printed on that tag. Use the 917273621 owner's manual to confirm the tag location and identification details.

On Craftsman riding lawn tractors, the product ID tag is typically in one of these places:

• Under the seat (seat pan area)
• On the rear fender near the seat
• On the frame rail near the engine
• Near the transmission area on the frame

Craftsman serial formats vary by production run, so start by checking for an obvious date code on the tag.

• Look for a line labeled MFG DATE, DATE, or similar
• If the serial begins with six digits, try reading them as a date code
• If the first six digits do not form a valid month and day, use the engine tag date (if present) as a secondary clue

Here is the most common date-code pattern you may see on riding equipment tags:

These steps prevent reading the wrong number:

• Confirm you are using the serial number, not the model number (917273621)
• Write the serial exactly as shown (include letters if present)
• Clean the tag gently so all digits are readable

The build year helps us match the correct parts diagrams and compatible components for your Craftsman tractor, especially for items that can change across production runs.

Last updated: February 2026