Craftsman 917273980 lawn tractor Parts

For Craftsman lawn tractor model 917273980, the fastest way to find the right replacement part is to use the parts diagram and match your exact model number to the component location, then confirm the part ID and description before ordering. Use the 917273980 owner's manual to verify maintenance and service details.

• Confirm the full model number is 917273980 (use the model tag on the tractor frame).
• Identify the system you are working on (mower deck, drive system, steering, electrical).
• Use the parts diagram to locate the exact component and reference number.
• Match the diagram callout to the correct part ID and part number.
• Compare your old part to the listing (mounting holes, pulley grooves, belt width/length).
• Order the part and follow the service steps in the manual for safe replacement.

These are examples of part listings that are commonly replaced on riding mowers like the 917273980:

• Do not rely on tractor appearance alone; Craftsman tractors can look similar across years.
• If a belt is involved, measure the old belt and confirm the routing and keeper locations.
• If a pulley or mandrel is involved, check for wobble, rough bearings, or a bent shaft.
• For electrical parts, inspect battery terminals and wiring connections before replacing parts.

Using the correct model-specific diagram and part ID prevents fit issues, reduces downtime, and helps protect key systems like the mower deck, transaxle drive, and starting circuit.

Last updated: February 2026

On Craftsman lawn tractor model 917273980, we identify the engine by locating the engine’s ID label or stamped numbers on the engine shroud (sheet metal) near the muffler and air cleaner area. Use those numbers to match the correct engine parts and tune-up specs in the 917273980 operator's manual.

Check these common spots with the hood open and the engine cool:

• On the sheet metal shroud directly above the muffler
• On the front of the engine near the air cleaner housing
• Near the valve cover area or blower housing (often a sticker or stamped pad)
• On a label near the starter or flywheel screen
• On the engine itself (not the tractor frame), usually on a flat, easy-to-read surface

Tip: Wipe off grass and oil film first; a flashlight and phone camera zoom help.

Most engines use a model-type-code format. Record everything exactly as shown.

• Match the engine model to the correct parts list (air filter, spark plug, fuel parts)
• Confirm tune-up specs like spark plug type and gap (listed in the manual’s product specifications section)
• Avoid ordering the wrong belt, pulley, or electrical part when multiple engine options exist

Your 917273980 tractor is a 20.0 HP, 42-inch deck riding mower; the tractor model number identifies the chassis, but the engine ID is what ensures you get the correct engine maintenance parts and specifications.

Last updated: February 2026

Yes, it’s worth replacing the engine on your Craftsman lawn tractor model 917273980 when the tractor is otherwise in good shape and you’re not also facing major deck or drive repairs. If the engine replacement plus any needed belts, blades, or electrical parts approaches the cost of a comparable replacement tractor, replacing the tractor is the better value. See the 917273980 owner’s manual for maintenance and safety guidance before any repair.

• The deck, steering, and transmission drive well (no major slipping, grinding, or frame damage).
• You can do the work yourself or have a shop you trust.
• The engine failure is confirmed (not just a battery, solenoid, or safety switch issue).
• You plan to keep the tractor for several more seasons.
• You are already keeping up with routine maintenance (oil, air filter, spark plug, belts).

A simple way we evaluate it is to compare total repair cost to replacement value.

Many no-start complaints are caused by basic service items or starting circuit parts.

• Confirm battery condition and cable connections (clean and tight).
• Check safety interlocks (brake, seat, PTO) and fuses.
• If you hear a click but no crank, test the starter solenoid; the lawn tractor starter solenoid 582042802 is a common fix when the solenoid fails.
• If the engine cranks but won’t fire, focus on fuel, spark plug condition, and air filter.

An engine swap is a big investment, but it can restore years of service if the rest of the 917273980 is solid. The manual’s maintenance schedule (oil type, oil capacity, spark plug spec, belt checks) helps prevent repeat failures and protects your investment.

Last updated: February 2026

The Craftsman lawn tractor model 917273980 uses a 20.0 HP (gross) gas engine and is designed for electric start with a 42-inch mower deck. For the exact engine model and service details (oil type, tune-up specs, and adjustments), use the 917273980 operator's manual.

From the operator documentation for this tractor, the key engine-related specs are:

• 20.0 HP (gross) engine rating (as declared by the engine manufacturer)
• Internal combustion (gas) engine
• Electric start
• Designed for a 42-inch mower deck
• Built with safety interlocks (for example, the operator presence system can shut the engine off if you leave the seat without setting the parking brake)

Many Craftsman riding mowers were built with engines from common suppliers (for example, Briggs & Stratton or Kohler), but the sure way is to read the engine ID label on your specific unit.

• Lift the hood and look for an engine data sticker on the blower housing, valve cover, or near the starter
• Write down the model, type, and code (or serial) from that label
• Match those numbers to the engine parts list and tune-up specs in the manual
• If you are ordering engine-related parts, use the tractor model 917273980 plus the engine ID numbers

Using the correct engine identification prevents wrong-part orders for common maintenance items like spark plugs, air filters, fuel filters, and starter components. It also helps when troubleshooting no-start issues or poor performance.

Last updated: February 2026

For Craftsman model 917273980 with a 42-inch mower deck, the correct belt size depends on which belt you mean (mower blade drive belt vs ground drive belt). Use the belt routing and replacement steps in the 917273980 operator's manual to match the exact belt path and ensure you’re replacing the right belt.

A 42-inch deck uses multiple belts on many tractors. The two most common are:

• Mower blade drive belt: runs around the mandrel pulleys and idler pulleys to spin the blades
• Ground drive belt: drives the tractor’s transmission for forward and reverse movement
• Variation/transaxle belt (on some setups): part of the drive system depending on transmission design

If your blades will not engage or the deck squeals, you’re usually looking at the mower blade drive belt. If the tractor will not move or slips, you’re usually looking at a ground/drive belt.

On this model’s parts list, we show a belt commonly used on the tractor drive system:

For a deck belt replacement, also inspect the deck hardware that guides the belt. A worn pulley or bent guide can shred a new belt quickly.

• Confirm whether the belt came off the deck (mandrel/idler pulleys) or the chassis (transmission/engine drive)
• Compare the old belt’s width (commonly 1/2-inch on many 42-inch decks)
• Check for glazing, cracks, or stretched sections (signs the belt is slipping)
• Spin idler pulleys by hand; replace any that wobble or grind
• Verify belt is routed inside belt guides after installation (called out in the manual)

A belt that is even slightly off in length can ride out of pulley grooves, slip under load, or cause poor cut quality. Correct routing and good pulleys matter as much as the belt itself.

Last updated: February 2026

Craftsman model 917273980 (shown in the operator documentation as 917.27398) was in production by February 21, 2017, which is the print date shown in the manual; that date is the most reliable timestamp we can tie directly to this exact model. For the exact build year of your specific tractor, use the product ID label on the machine and compare it to the details in the 917273980 operator's manual.

We use the tractor’s identification label because the same model number can span more than one production run.

• Look under the seat or on the rear fender/frame area for the product label
• Write down the model number (917273980) and any serial number/date code
• Match the label info to the identification section in the 917273980 operator's manual
• If the label is dirty or faded, clean it gently and take a clear photo
• Keep the label info handy when ordering parts like a belt, blade, or starter solenoid

The manual provides a solid reference point, but it is not always the same as the tractor’s assembly date.

Knowing the build year helps us match the correct configuration for wear items and drive components (for example, the deck belt routing, idler pulley style, or electrical parts like the lawn tractor starter solenoid 582042802). That reduces returns and speeds up repairs.

Last updated: February 2026