Craftsman 917273023 garden tractor Parts

On the Craftsman 917273023 front-engine lawn tractor, the engine system is built around fuel delivery, air intake, ignition, lubrication, and exhaust components that work together to create power and safely drive the mower deck and transmission. For diagrams and maintenance intervals, use the 917273023 owner's manual.

Core engine parts (what they do)

• Fuel tank and fuel lines: store and deliver gasoline to the engine
• In-line fuel filter: traps debris before it reaches the carburetor (typically replaced once per season)
• Carburetor: mixes fuel and air for combustion
• Air cleaner assembly: paper cartridge plus foam pre-cleaner; keeps dirt out of the engine
• Ignition system: spark plug and ignition coil; creates spark to ignite the fuel-air mix
• Lubrication system: engine oil and oil filter; reduces wear and heat
• Muffler: reduces exhaust noise; replace if corroded

Related tractor controls that affect engine operation

These are not internal engine parts, but they directly control how the engine runs and how power is used:

• Throttle control (engine speed)
• Choke control (cold starts)
• Ignition switch and key
• Attachment clutch switch (engages mower blades)

System	Common parts included	Typical symptom if faulty
Fuel delivery	fuel tank, fuel filter, carburetor	hard starting, surging, loss of power
Air intake	air filter cartridge, foam pre-cleaner	black smoke, poor power, rough running
Ignition	spark plug, ignition coil	no-start, misfire
Exhaust	muffler	loud operation, overheating risk

Parts we commonly see customers replace

If you are troubleshooting blade engagement (often confused with an “engine problem”), the PTO circuit is a frequent check:

• Switch.pto.3 582107601 (PTO switch)

Why it matters

Knowing which system you are dealing with helps you troubleshoot faster. For example, the manual’s troubleshooting chart ties loss of power to items like a dirty air filter, dirty fuel filter, stale fuel, or a faulty spark plug, which are all serviceable engine-related components.

Last updated: January 2026

Craftsman engines are made by several manufacturers depending on the specific mower or tractor; for the Craftsman garden tractor model 917273023, the engine is commonly associated with Kohler (the manual’s decals list includes a “blower housing Kohler” reference), while other Craftsman models may use Briggs & Stratton or Kawasaki engines. For exact identification, match the engine model and spec numbers shown in the 917273023 owner's manual.

How to identify the engine manufacturer on your 917273023

Use these quick checks on the tractor itself (best) and then confirm with documentation:

• Look for the engine ID label on the blower housing, valve cover, or near the starter.
• Record the engine model and spec numbers (not just “20.0 HP”).
• Check the hood and frame decals for brand markings.
• Compare what you find to the engine section and parts listings in the manual.
• If the label is missing, use the tractor’s build details (deck size, transmission type) to narrow it down.

Common Craftsman engine suppliers (what you will see across models)

Craftsman has used multiple engine brands over the years. Here is what’s most common:

Engine brand	Where you’ll usually see it	What to look for on the engine
Briggs & Stratton	Many walk-behind mowers and some riders	“Briggs & Stratton” tag, model-type-code format
Kohler	Many riding tractors and garden tractors	“Kohler” tag, model-spec format
Kawasaki	Some higher-end riders and zero-turns	“Kawasaki” tag, FR/FS/FX series markings

Why it matters

The engine manufacturer determines the correct tune-up parts and service specs (spark plug type and gap, oil capacity, filters, and throttle/choke linkage setup). Using the right engine ID also prevents ordering the wrong ignition or fuel-system parts.

Related tractor parts you may replace during service

If you are doing seasonal maintenance or troubleshooting, these model-matched parts are commonly involved:

• Molded ignition key 532140403 (no-start or lost key situations)
• Switch.pto.3 582107601 (PTO engagement issues)
• Riding lawn mower blade drive belt 532148763 (deck drive and cutting performance)

Last updated: January 2026

For a Craftsman riding tractor like model 917273023, a full engine replacement typically costs $260 to $1,800 installed, depending on the engine, labor rates, and whether related fuel or electrical parts need attention during the swap. Use the 917273023 owner's manual for safety steps before any repair.

What drives the total cost

• Engine price (new vs. rebuilt, horsepower, shaft size, charging system)
• Labor time (a riding mower engine swap commonly takes several hours)
• Extra parts often replaced at the same time (belts, fuel parts, wiring)
• Shop supplies (oil, filter, clamps, hardware)
• Pickup/delivery if you do not transport the tractor

Typical cost breakdown

Cost item	Typical range	Notes
Engine (part)	$200 to $1,400	Biggest variable; must match crankshaft and mounting pattern
Labor	$200 to $600	Depends on shop rate and rusted hardware
Fluids and tune-up items	$30 to $120	Oil, filter, spark plug, fuel filter
“While you’re in there” parts	$0 to $300+	Belts, pulleys, wiring repairs

Smart checks before you replace the engine

We recommend ruling out common “no start” or “runs rough” causes first, because they can look like a bad engine:

• Replace stale fuel and check for water in fuel
• Inspect/replace the fuel filter (the manual calls for seasonal replacement)
• Service the air filter and pre-cleaner
• Replace the spark plug (often every season or 100 hours)
• Inspect for loose/damaged wiring and safety interlock issues

If your blades will not engage or stop correctly, that is often a clutch or belt issue, not an engine issue; the switch.pto.3 582107601 is one example of a related control part on this model.

Why it matters

An engine swap is one of the highest-cost repairs on a riding mower. Confirming fuel, ignition, and safety interlock operation first helps you avoid replacing a good engine and gets the tractor back to reliable mowing faster.

Last updated: January 2026

The Craftsman riding mower model 917273023 is a 20.0 HP, electric-start front-engine garden tractor (per the 917273023 owner's manual). The manual excerpt provided does not list the engine manufacturer, so we use the manual’s horsepower rating as the reliable identifier for this model.

How to identify the exact engine on your 917273023

Use these quick checks to match the correct engine parts (air filter, spark plug, carburetor, starter):

• Look for the engine ID label on the blower housing or valve cover (often shows model, type, code).
• Compare the spark plug spec listed for this tractor (Champion RC12YC, 0.030 in gap).
• Confirm oil capacity (3.7 pints without filter; 4.2 pints with filter).
• Verify charging system output (15 amps at 3600 RPM).
• Match the tractor’s deck and drivetrain controls (PTO/attachment clutch switch, motion control lever) to ensure you are working on the correct unit.

Common engine brands used on Craftsman tractors (what to expect)

Craftsman tractors in this family are commonly equipped with engines from major small-engine makers. The exact brand varies by build and engine tag, so the engine label is the deciding factor.

What you have	What it tells you	Best next step
20.0 HP rating on tractor manual	Confirms the tractor’s designed power class	Use engine label to pick exact tune-up parts
Spark plug RC12YC spec	Helps cross-check ignition system compatibility	Replace plug and set gap to 0.030 in
Electric start	Confirms starter/battery system is used	Check battery, cables, and solenoid connections

Why it matters

Ordering engine parts by tractor model alone can lead to mismatches because the same tractor platform can be built with different engine variants. Matching the engine model/type/code prevents wrong air filters, belts routing assumptions, and ignition parts.

Related parts customers often replace

If you are troubleshooting starting or blade engagement issues, these model-matched parts are commonly involved:

• Molded ignition key 532140403 (no-start or intermittent start due to worn key)
• Switch.pto.3 582107601 (blades will not engage or PTO circuit issues)
• Riding lawn mower blade drive belt 532148763 (blades slip, squeal, or stop under load)

Last updated: January 2026