Craftsman 917273800 tractor Parts

Yes, replacing the engine on your Craftsman 917273800 front-engine lawn tractor is worth it when the tractor’s deck, chassis, steering, and drive system are still solid and you want to extend the machine’s life for less than the cost of a comparable replacement tractor. Use the owner's manual to confirm maintenance and safety steps before any major repair.

When an engine replacement makes sense

We recommend an engine swap when the rest of the tractor is in good condition and you can address the root cause of the failure (overheating, dirty cooling fins, fuel issues, poor maintenance).

• The mower deck is structurally sound and still cuts well after blade service
• The tractor still drives properly (no chronic belt slip or transmission issues)
• You can complete basic tune-up and troubleshooting steps first (fuel, spark, air)
• You can do the work safely (the manual warns against adjustments with the engine running)
• You plan to keep the tractor several more seasons

When replacing the tractor is the better value

If multiple major systems are worn, an engine swap often turns into a larger rebuild.

• Deck shell is rusted through or badly damaged
• Steering or front axle wear is severe (wandering, excessive play)
• Repeated drive problems (belt wear, loss of drive, brake issues)
• You need several high-cost repairs at the same time
• You want a faster, lower-effort solution than a full engine swap

Quick cost-to-value check

Use this simple comparison to decide.

What you’re comparing	Engine replacement usually wins when…	Replacement tractor usually wins when…
Total repair cost	Under about half the cost of a comparable tractor	Near or above half the cost
Condition of deck and frame	Solid, not cracked or rusted through	Structural damage or heavy corrosion
Time and tools	You can DIY and troubleshoot confidently	You need it running immediately
Future reliability	You can also fix fuel/air/cooling causes	Multiple systems are aging out

Why it matters

A new engine can restore reliability, but it will not fix cutting or drive issues caused by worn deck components, belts, or mandrels. For example, if you are already dealing with blade or deck performance problems, you may also be looking at parts such as the lawn tractor ground drive belt, 1/2 x 82-in 532140294 or deck hardware.

Last updated: February 2026

Craftsman model 917273800 is from the LT1000-era, and it’s typically dated to the early 1990s, with 1991 commonly used as the start year for this model family. For the most accurate date range tied to your exact tractor, match the product/serial information in the 917273800 owner's manual.

How to confirm the exact year on your tractor

We recommend using the tractor’s product identification details (not just the model number), because the same model family can span multiple production runs.

• Find the model and serial tag (usually under the seat, on the frame rail, or near the engine area)
• Write down the full model number and the serial number exactly as shown
• Compare the numbers to the identification guidance in the 917273800 owner's manual
• If decals are missing or unreadable, use parts on the tractor (like ignition key style or deck components) to help confirm the build period

Quick reference: model number vs. build date

Item	What it tells you	Why it matters
Model number (917273800)	Product family and configuration	Helps you pick correct parts diagrams and assemblies
Serial number	Production sequence and build period	Best way to narrow down the exact year
Engine model/type	Engine variant used during certain years	Helps when ordering engine-related maintenance parts

Why it matters

The build year affects small but important fit details on riding mowers, especially for deck hardware, steering parts, and electrical items. Confirming the year helps you avoid ordering the wrong blade, belt, or ignition components.

Example parts that can vary by production run

• Mower blades (deck style and lift profile)
• Ground drive belt length and routing
• Steering hardware and axle components
• Electrical parts such as the ignition key and interlock switch

Last updated: February 2026

On Craftsman riding lawn tractors like model 917273800, the model number is typically printed on an ID label on the tractor frame under the seat area. Confirm the exact location and label format using the 917273800 owner's manual.

Where to look on the tractor

Check these common ID-tag locations first:

• On the frame directly under the seat (lift the seat to view the frame rail)
• On the underside of the seat pan
• Near the rear fender or seat mounting bracket area
• On the chassis frame close to the transmission tunnel
• On a label near the engine compartment opening (less common)

What the label looks like (and what to write down)

For this Craftsman tractor, the manual identifies the model as 917.273800 (often shown without the dot as 917273800). Record:

• Model number (example: 917273800)
• Serial number (if shown)
• Any product number or manufacturing code on the same tag

Label item	Why it matters
Model number	Ensures you get the correct parts diagrams and part matches
Serial number	Helps confirm production variation and correct part revisions
Engine info (if listed)	Helps match tune-up and engine-related parts

Why it matters

Using the exact model number prevents ordering the wrong blades, belts, and deck parts. For example, this model commonly uses 42-inch deck components such as the lawn tractor 42-in deck high-lift blade 532138971 and the lawn tractor ground drive belt, 1/2 x 82-in 532140294.

Last updated: February 2026

Craftsman riding mower model 917.273800 is a 16.0 HP lawn tractor with a 42-inch mower deck, electric start, and an automatic transmission; those are the engine-related specs called out in the 917273800 owner's manual. To identify the exact engine make and model installed on your tractor, use the engine ID label on the engine itself.

How to identify the exact engine on your 917.273800

We use the engine’s ID tag because it provides the precise manufacturer and model code needed for tune-up and fuel parts.

• Park on a level surface, set the parking brake, and remove the key
• Let the engine cool completely
• Find the engine ID label (commonly on the blower housing, valve cover, or near the starter)
• Write down the model, type/spec, and code/serial from the label
• Use those numbers to match the correct spark plug, air filter, fuel filter, and carburetor parts

What we can confirm from the manual for this model

The manual confirms the tractor configuration and power rating for model 917.273800.

Item	Craftsman 917.273800
Power rating	16.0 HP
Deck size	42 in
Starting	Electric start
Transmission	Automatic

Why it matters

The tractor model number 917.273800 is best for matching chassis, deck, steering, and drive components; the engine ID label is what ensures you get the right engine maintenance parts and troubleshooting steps.

Parts that commonly affect mowing performance

If you are chasing poor cut quality (streaking, ragged grass tips, uneven cut), these deck parts are frequent wear items:

• Lawn tractor 42-in deck high-lift blade 532138971
• Husqvarna lawn tractor mandrel assembly 532130794
• Lawn tractor ground drive belt, 1/2 x 82-in 532140294

Last updated: February 2026

For a Craftsman riding tractor like model 917273800, a full engine replacement typically costs $260 to $1,800 installed, depending on engine type, what hardware you reuse (pulleys, wiring), and local labor rates. Plan on about 6 labor hours for a typical riding mower engine swap.

What drives the total cost

• Engine price: varies by horsepower, crankshaft size, and charging system
• Labor: removal, transfer of parts, installation, and setup checks
• Extra parts: belts, keys, and hardware often get replaced during the job
• Condition issues: rusted fasteners, damaged wiring, or contaminated fuel add time

Typical cost breakdown (installed)

Cost item	Typical range	Notes
Engine (part)	$200 to $1,400	Must match crankshaft specs and mounting pattern
Labor	$300 to $900	Commonly based on about 6 hours
Misc. parts and supplies	$20 to $200	Belts, hardware, oil, shop supplies
Estimated total	$260 to $1,800	Most jobs land mid-range when no surprises appear

Parts commonly replaced during an engine swap

If wear items are questionable, replacing them during the engine job helps avoid paying labor twice.

• Molded ignition key 532140403 (if yours is worn or missing)
• Lawn tractor ground drive belt 532140294 (if glazed, cracked, or stretched)
• Lock nut 532409149 (for stripped or seized fasteners)

Why it matters

An engine swap only pays off when the replacement engine matches the tractor’s crankshaft and mounting specs and the drive system is in good shape; worn belts or hardware can still cause poor performance after installation.

Before you approve the repair

Use the owner's manual to review safety interlock behavior and basic maintenance checks (oil level, belts, fasteners) so you can separate a true engine failure from a cheaper no-start repair.

Last updated: February 2026