Craftsman 917274751 lawn tractor Parts

The Craftsman lawn tractor model 917274751 is an 18.5 HP front-engine riding mower; the owner’s manual identifies it as a low-emission engine design for this tractor. For the exact engine make, model, and tune-up specs, use the 917274751 owner's manual.

We recommend confirming the engine by reading the engine ID label (usually on the blower housing, valve cover, or near the starter). Match that information to the engine section in the manual.

• Look for engine model, type, and code on the engine label
• Record the numbers before ordering ignition or fuel parts
• Check for a single-cylinder layout (common on tractors in this HP range)
• Verify the deck size separately (this model is listed as a 42-inch mower deck in the manual)
• Use the manual’s maintenance schedule for oil, air filter, and spark plug intervals

Craftsman front-engine lawn tractors in the 18 to 20 HP range commonly use engines from a few major manufacturers. Your tractor’s engine label is the deciding factor.

The correct engine identification prevents wrong parts ordering and helps you use the right oil, spark plug, and air filter. It also speeds up troubleshooting for no-start, hard-start, or poor performance issues.

If you are also servicing the mower deck, blade selection depends on your cutting setup; for example, a mulching configuration may use the husqvarna lawn tractor mulching blade, 21-in 532134149.

Last updated: February 2026

On the Craftsman 917274751 front-engine lawn tractor, the engine is built from fuel, air, ignition, and internal rotating parts that work together to create power; the tractor also uses safety and control components (like the ignition switch and operator-presence system) to run and mow safely. See the 917274751 owner's manual for your exact layout.

• Fuel tank and fuel line: stores and delivers gasoline
• Fuel filter: traps debris before it reaches the carburetor
• Carburetor: mixes fuel and air for combustion
• Air filter: keeps dirt out of the engine (a dirty filter can cause loss of power)
• Spark plug and ignition coil: creates spark to ignite the air-fuel mixture
• Flywheel: helps keep engine speed steady and supports ignition timing
• Crankcase and crankshaft: houses oil and converts piston motion into rotation
• Valves and cylinder: controls airflow in and out of the combustion chamber

Your 917274751 includes controls and interlocks that affect starting and running:

• Ignition switch (starts and stops the engine)
• Throttle/choke control (starting and engine speed)
• Clutch/brake pedal (used for declutching, braking, and starting)
• Operator presence sensing switch (shuts down operation if the operator leaves the seat in certain conditions)

Knowing which parts are “engine” versus “mower deck” helps you troubleshoot faster. For example, power loss often traces to air, fuel, or ignition, while vibration often traces to blades or mandrels.

Last updated: February 2026

To find the right Craftsman parts for model 917274751, match your exact model number first, then use the parts diagrams and the owner’s manual to identify the correct part name and number before ordering. This prevents fit issues on key items like blades, belts, and steering parts.

• Confirm the model number on the tractor’s ID tag matches 917274751.
• Use the exploded views in the 917274751 owner's manual to identify the assembly (mower deck, drive, steering, chassis).
• Write down the part description and any listed part number from the diagram.
• Compare your old part to the diagram notes (length, mounting holes, pulley type, orientation).
• Order by the exact part ID when available to avoid look-alike parts.

These are frequent wear items on a 42-inch deck lawn tractor like the Craftsman 917274751:

Using the correct diagram and part ID helps you avoid ordering the wrong blade style (mulching vs high-lift), the wrong belt length, or steering and deck hardware that looks similar but mounts differently. It also speeds up repairs and reduces downtime during mowing season.

If you are searching for parts because the engine clicks, will not turn over, or spins but will not start, use a symptom-based guide first so you replace only what is needed: riding lawn mower engine clicks but doesnt turn over video.

Last updated: February 2026

For the Craftsman lawn tractor model 917274751, we use 4-cycle engine oil; the tractor is shipped from the factory already filled with summer-weight oil, and you select the correct viscosity for your temperatures using the oil viscosity chart in the 917274751 owner's manual.

Most riding mower engines run best on detergent 4-cycle oil; pick viscosity by outdoor temperature.

• Warm weather mowing: SAE 30 is common
• Mixed temperatures: 10W-30 is common
• Cold weather starting: 5W-30 is common (helps easier starting)
• Use oil labeled for 4-stroke/4-cycle engines
• Keep oil at the FULL mark on the dipstick; do not overfill

We follow the same dipstick method described in the manual.

1. Park on level ground and let the engine cool.
2. Remove the oil fill cap/dipstick, wipe clean.
3. Reinsert and tighten, wait a few seconds.
4. Remove and read the level; add oil to the FULL mark.

Correct oil viscosity protects the engine from wear, reduces overheating during mowing, and improves starting in cold weather. Using the wrong viscosity is a common cause of hard starting and accelerated engine wear.

Last updated: February 2026