Craftsman 917270654 42" 15.5-hp lawn tractor Parts

For Craftsman model 917270654, the serial number by itself does not reliably identify the exact model year using one universal format. The most accurate way is to use the product number/model tag information and compare it to the identification guidance in the 917270654 owner’s manual.

Where to find the numbers to use

On most Craftsman front-engine lawn tractors, the model and serial information is on a product identification label located on the frame (often under the seat area or near the rear fender).

• Write down the model number (should match 917270654)
• Write down the serial number exactly as shown (letters and numbers)
• Note any date code or additional numbers printed near the serial
• If the label is dirty or faded, clean it gently so every character is readable

Why “MMDDYY” serial decoding is not a safe rule

Some online tips suggest the serial number starts with a date (month, day, year). That pattern can be true for certain products or certain years, but it is not consistent across all Craftsman tractors, including units in the 917-series.

Quick check table

What you have	What it can tell you	Best next step
Model number 917270654	Confirms the correct parts family	Use it to match parts and manuals
Serial number only	Often identifies production sequence, not a clear year	Use manual guidance and label details
Date code on label	Can indicate build date	Record it exactly and use it for dating

Why it matters

Getting the year wrong can lead to ordering the wrong belt, blade, or safety switch even when the tractor looks similar. Using the model number first keeps parts like a lawn tractor v-belt 532144959 matched correctly.

Last updated: January 2026

For your Craftsman lawn tractor model 917270654, we recommend buying replacement parts by searching with the full model number to ensure fit. We offer model-matched parts and diagrams, and your 917270654 owner’s manual also helps you identify the correct part names and locations.

Best ways to get the right part for model 917270654

• Use the full model number 917270654 when searching; similar Craftsman numbers can use different belts, blades, or hardware.
• Match the part by description and function (for example, blade drive belt vs ground drive belt).
• Compare the part in your tractor to the diagram and notes in the manual before ordering.
• If you are unsure, replace wear items in sets when appropriate (for example, blades as a pair on a 42-inch deck).
• Keep a record of any part numbers you remove so future maintenance is faster.

Common replacement parts customers shop for

These are frequent wear items on 42-inch riding mowers like this model:

Part type	What it affects	Example from this model’s parts list
Blade drive belt	Blade spin and cut quality	Lawn tractor v-belt 532144959
Mulching blade	Cut quality and mulching performance	Husqvarna lawn tractor mulching blade, 21-in 532134149
Safety/interlock switch	Starting and blade engagement safety	Lawn tractor seat switch 532421062

Why it matters

Using the exact model number 917270654 helps prevent returns and downtime. Riding mower parts like belts, mandrel components, and deck hardware can look similar but differ in length, mounting style, or compatibility.

Last updated: January 2026

For Craftsman lawn tractor model 917270654, the owner’s manual identifies it as a 15.5 HP riding lawn tractor, but it does not specify the engine manufacturer or engine model family. We recommend using the engine ID label on the engine itself to confirm the exact engine type. See the 917270654 owner’s manual.

How to identify the exact engine on model 917270654

You can confirm the engine type by checking the engine’s identification label (usually on the blower housing, valve cover, or near the starter).

• Look for engine brand (often Briggs & Stratton, Kohler, or Tecumseh on older units)
• Record the engine model, type, and code (or spec number)
• Match those numbers when buying tune-up parts (spark plug, air filter, fuel filter)
• Check for a single-cylinder layout (one spark plug) versus twin-cylinder (two plugs)
• Verify fuel type: this tractor uses unleaded regular gasoline per the manual

Model 917270654 specs we can confirm from the manual

The manual provides operating and maintenance specs that apply to this tractor even if the engine brand is not listed.

Spec (model 917270654)	Value
Horsepower rating	15.5 HP
Fuel capacity	1.25 gallons
Spark plug type	Champion RC12YC
Spark plug gap	0.030 in

Why it matters

The engine brand and model determine the correct maintenance parts and settings. Using the engine ID numbers helps you avoid ordering the wrong air filter, carburetor parts, or ignition components.

Last updated: January 2026

On the Craftsman 917270654 (42-inch, 15.5-hp) lawn tractor, the most common problems we see are starting or running issues, poor cutting quality, and drive or blade-engagement problems. Many of these trace back to routine wear items (belts, blades) or basic maintenance and adjustments in the 917270654 owner’s manual.

Common issues (and what they usually point to)

• Engine will not start or runs rough: stale fuel, dirty air filter, fouled spark plug, weak battery, or a safety interlock not made.
• Blades will not engage or cut is uneven: worn blade-drive belt, loose belt routing, dull/bent blades, or deck not level.
• Tractor will not move or slips under load: worn ground-drive belt, idler/pulley wear, or linkage adjustment.
• Excess vibration or loud deck noise: damaged blade, worn mandrel bearings, or a loose pulley/fastener.
• Poor discharge or clumping: wet grass, deck packed with debris, or incorrect cutting height.

Quick checks we recommend first

1. Park on level ground; remove the key and disconnect the spark plug wire before working around blades.
2. Confirm tire pressure and deck level; uneven tires can mimic a “bad deck.”
3. Inspect belts for glazing, cracking, or slack.
4. Check blade condition and tightness.
5. Verify the operator-presence and interlock switches are working as intended.

Parts that commonly solve cutting and engagement complaints

If the symptom is belt slip, squeal, or blades that stop in heavy grass, these model-compatible parts are common fixes:

• Lawn tractor v-belt 532144959 (blade drive belt)
• Husqvarna lawn tractor mulching blade, 21-in 532134149 (blade wear or damage)
• Husqvarna lawn tractor mandrel assembly 532130794 (spindle/mandrel wear, noise, wobble)

Symptom-to-likely-cause guide

Symptom	Most likely area	Typical next step
Blades engage slowly or slip	Blade drive belt and idlers	Inspect belt condition and routing; replace worn belt
Uneven cut	Deck level, blades, tire pressure	Level deck; sharpen/replace blades
Vibration from deck	Blade or mandrel	Inspect blade; check mandrel play/noise
Won’t move well	Ground drive belt and linkage	Inspect belt and pulleys; check adjustments

Why it matters

Catching belt and blade wear early helps protect the mandrel assemblies, pulleys, and deck housing, and it keeps your Craftsman 917270654 cutting evenly while reducing vibration and premature drivetrain wear.

Last updated: January 2026