Craftsman 917273021 tractor Parts

On the Craftsman lawn tractor model 917273021, we identify the engine by locating the engine model and type numbers stamped on the engine itself (not the tractor frame). On many tractors like this, the stamping is on the sheet metal near the muffler area or on the front of the engine near the air cleaner. For the exact locations and labeling style used on your tractor, use the 917273021 owner's manual.

Where to look on the engine

Check these common spots first (wipe dirt and grass off so you can read the stamping):

• Above or near the muffler on the engine shroud (right or left side)
• Front of the engine near the air cleaner housing
• Valve cover area or nearby sheet metal (sometimes a tag or stamped pad)
• Blower housing (recoil or fan shroud) where cooling air is pulled in
• Under the hood line of sight on the engine, not on the mower deck

What numbers you need (and what they’re used for)

Engine ID formats vary by engine maker, but you typically want all of these:

What you find on the engine	Why it matters	Example use
Model number	Identifies the engine family	Ordering tune-up parts
Type/spec code	Identifies the exact configuration	Matching carburetor or starter
Code/date (if present)	Helps confirm production version	Avoiding wrong revisions

Tips to get a readable engine ID

• Clean the area with a rag and mild degreaser; avoid soaking electrical parts.
• Use a flashlight at a low angle to make stamped numbers stand out.
• Write the numbers down exactly (including dashes and suffix letters).
• Take a photo before ordering parts so nothing is mis-copied.

Why it matters

Your tractor model number (917273021) helps with chassis and deck parts, but the engine model/type is what ensures you get the correct ignition, fuel, and tune-up components for the engine installed on your tractor.

Last updated: February 2026

Craftsman tractors can be equipped with engines from several manufacturers, but for Craftsman model 917273021, the owner’s manual indicates a Kohler Pro 20 engine series. For the exact engine identification details (model and spec numbers), we recommend checking the engine label and the 917273021 owner's manual.

What you will typically see on Craftsman riding tractors

Craftsman has used multiple engine brands across different tractor model years and trim levels. Common engine makers include:

• Briggs & Stratton
• Kohler
• Kawasaki
• Tecumseh (older equipment)
• Other OEM-sourced engines depending on production run

How to confirm the engine brand on your 917273021

Use these quick checks to verify what is installed on your tractor:

• Look for the engine brand badge on the blower housing or valve cover
• Find the engine model and spec tag (often near the starter, valve cover, or shroud)
• Match the engine series callout in the 917273021 owner's manual
• Compare the engine label information to your parts diagrams when ordering tune-up parts

Where the engine ID label is usually located

Engine area	What you are looking for	Why it helps
Blower housing/shroud	Brand and series decal	Confirms manufacturer at a glance
Engine tag/plate	Model and spec numbers	Needed for exact carburetor, starter, and ignition parts
Valve cover area	Brand stamping or label	Helps confirm Kohler vs Briggs & Stratton

Why it matters

Engine brand and spec numbers determine the correct maintenance parts (spark plug, air filter, fuel parts) and repair parts. Even within the same Craftsman tractor model family, engine variations can change what fits.

Last updated: February 2026

On the Craftsman riding lawn tractor model 917273021, the model number is printed on the product identification label located under the seat (typically on the underside of the seat or the seat pan area). Use that exact number when ordering parts or looking up specifications in the 917273021 owner's manual.

Where to look (fast checklist)

• Park on a flat surface, set the parking brake, and turn the key off.
• Lift the seat up and look on the underside of the seat first.
• If you do not see it on the seat, check the seat pan or frame directly under the seat.
• Wipe dust and grass residue off the label so the digits are readable.
• Write down the full model number exactly as shown: 917.273021 (often printed with a dot).

What the label information is used for

The model number helps us match the correct diagrams and parts for your exact tractor configuration (deck, steering, wheels, and drive system).

Label item	What it helps with	Example for this tractor
Model number	Correct parts lookup and manual match	917.273021 (same as 917273021)
Product name/series	General identification	Craftsman front-engine lawn tractor
Serial number	Production run details	Varies by unit

Why it matters

Many Craftsman tractors look similar, but parts like belts, tires, and steering components can vary by model. Using 917273021 prevents ordering the wrong part and speeds up troubleshooting.

Last updated: February 2026

Yes, it’s worth replacing the engine on your Craftsman tractor model 917273021 when the rest of the tractor (deck, transmission, steering, frame) is in good shape and the total repair cost stays well below the price of a comparable replacement tractor. Use the 917273021 owner's manual to confirm maintenance and safety checks before investing in major repairs.

Quick decision checklist

• Replace the engine if the tractor has solid compression, good drive performance, and a straight, rust-free deck.
• Replace the tractor if the transmission is slipping, the deck shell is rotted, or multiple major systems are failing.
• Price the full job, not just the engine: labor, belts, filters, battery, and blades add up.
• If the engine failure was caused by neglect (dirty oil, clogged cooling fins, old fuel), plan on a full tune-up after replacement.
• If you rely on the mower weekly, downtime matters; a new tractor can be the faster path back to mowing.

Cost and value guide (practical rule)

A reliable rule is: if the engine replacement totals more than about 50% of the tractor’s current value, replacement is usually the better buy.

Scenario	Typical recommendation	Why
Tractor is otherwise strong; engine is the only major failure	Replace engine	You keep a known-good chassis and deck
Engine plus transmission or deck problems	Replace tractor	Stacked major repairs exceed value
You need maximum reliability and minimal downtime	Replace tractor	Newer machine reduces near-term repair risk

Before you decide: checks that prevent repeat failures

The manual emphasizes safe servicing and routine maintenance that directly affects engine life.

• Let the machine cool before storing; clean oil or fuel spills
• Never adjust or repair with the engine running
• Replace spark plugs at the start of each season or every 100 hours
• Replace the in-line fuel filter once each season
• Replace the engine oil filter every season (or every second oil change if used over 100 hours/year)

For a maintenance baseline after any major engine work, use how to tune up a riding lawn mower video.

Why it matters

An engine swap can be a smart investment, but only when it restores a tractor that is already mechanically sound. If other high-dollar systems (like the transmission or mower deck) are near end-of-life, the engine won’t solve the bigger reliability problem.

Last updated: February 2026

The Craftsman riding lawn tractor model 917273021 uses a Kohler CV20S engine, Type 65551. You can confirm the engine identification on the engine shroud tag and in the engine breakdown section of the 917273021 owner's manual.

Where to find the engine model on the tractor

We recommend checking the engine ID label first because it matches parts to the exact engine family and type.

• Look on the engine shroud/blower housing for the Kohler ID tag
• Record the model (CV20S) and type (65551)
• Use those numbers when ordering Kohler-specific items (starter, carburetor parts, charging parts)
• Use the tractor model (917273021) when ordering chassis and deck parts (belts, steering, wheels)

Tractor model vs. engine model (what to use when ordering parts)

What you’re working on	Use this identifier	Example parts it affects
Engine internal and engine-mounted components	Kohler CV20S-65551	Starter, carburetor, rectifier-regulator, ignition parts
Tractor frame, controls, and drivetrain routing	Craftsman 917273021	Ground drive belt, steering linkage, fuel tank, throttle control

Helpful related parts for this model

If you are troubleshooting a no-crank or PTO issue, these model-matched parts are commonly involved:

• Switch.pto.3 582107601 (PTO engagement switch)
• Molded ignition key 532140403 (key and ignition switch interface)
• Throttle control 532175437 (engine speed control linkage)
• Husqvarna lawn tractor fuel tank 532151346 (fuel supply container for the tractor)

Why it matters

Kohler engines often share the same base model across many tractors, but the type number narrows it to the correct configuration (charging system, controls, and mounting details). Using CV20S-65551 prevents ordering the wrong engine parts.

Last updated: February 2026

The Craftsman riding lawn mower model 917273021 uses a 20.0 HP electric-start engine (as shown on the cover of the 917273021 owner's manual). To identify the exact engine make and model (Briggs & Stratton, Kohler, etc.), match the engine ID tag on your tractor to the manual and parts diagrams.

What we know for model 917273021

These model-specific details are listed in the manual:

• Engine rating: 20.0 HP
• Starting system: electric start
• Fuel type: unleaded regular gasoline
• Fuel capacity: 3.5 gallons
• Oil capacity: 4.2 pints with filter, 3.7 pints without filter
• Battery spec: U1R case size, 35 Ah, 280 CCA

How to identify the engine manufacturer and model

Use this quick checklist to get the right engine parts and tune-up specs:

• Look for the engine ID label on the blower housing, valve cover area, or near the starter.
• Write down the engine model, type, and code (or spec number).
• Compare that information to the engine section in the 917273021 owner's manual.
• Use the engine ID when ordering maintenance items like air filters, oil filters, and spark plugs.

Quick spec table (from the manual)

Item	Spec for 917273021
Horsepower	20.0 HP
Start type	Electric start
Fuel	Unleaded regular, 3.5 gallons
Oil capacity	4.2 pints (with filter), 3.7 pints (without filter)

Why it matters

Craftsman tractors can ship with different engine families across production runs. Using the engine ID tag prevents ordering the wrong tune-up parts and helps you follow the correct maintenance schedule for reliable starting and full power.

Last updated: February 2026