Owner’s manual
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What kind of engine does a Craftsman riding lawn mower have?
The Craftsman riding lawn mower model 917270940 uses a 20.0 HP, low-emission, electric-start gasoline engine (as specified in the 917270940 owner's manual). This model is an automatic 42-inch mower lawn tractor, and it should be operated at full throttle for best cutting and charging performance.
What “kind of engine” means on this model
On the 917270940, “kind of engine” typically refers to starting type, emissions design, and general configuration called out in the manual.
- 20.0 HP engine rating
- Low-emission engine design (operates differently than older engines)
- Electric start with an ignition key
- Gasoline engine (fuel freshness matters)
- Designed to run at full throttle during mowing for best performance
Quick spec snapshot (model 917270940)
| Item | What you have | What to check if you need more detail |
|---|---|---|
| Horsepower | 20.0 HP | Engine ID label on the engine shroud |
| Starting | Electric start | Battery condition, key switch, starter circuit |
| Emissions | Low-emission design | Fuel quality and correct operating procedure |
| Tractor type | Automatic lawn tractor | Drive control operation in the manual |
If you are trying to identify the engine brand or exact engine model
The fastest way is to match the engine’s ID tag (model, type, code) to your tractor model.
- Look for an engine label on the blower housing or valve cover area
- Record the engine model/type/code exactly as printed
- Compare operating and maintenance notes in the 917270940 owner's manual
- Use fresh fuel (most small-engine fuel is best used within about 30 days)
- If the engine cranks slowly or clicks, start with the battery and connections
Why it matters
Correct engine identification helps you buy the right tune-up parts (spark plug, air filter, fuel filter) and follow the right starting and throttle procedure, which improves starting reliability and cut quality.
Last updated: February 2026
Where can I find the Craftsman riding mower model number?
On the Craftsman riding mower model 917270940, the model number is printed on the product identification label located under the seat. Lift the seat and look for a label that lists the model and other tractor information; our 917270940 owner's manual also shows where key identification information is referenced.
Where to look (quick checklist)
- Park on a flat surface, set the parking brake, and turn the key off
- Lift the seat fully and look on the underside of the seat pan and nearby frame surfaces
- Wipe dirt and grass off the label so the numbers are readable
- Write the model number exactly as shown (for example: 917.270940 may appear with a dot)
- Take a clear photo of the label for future parts lookups
What the label typically includes
Most Craftsman tractor ID labels include several fields. Use the model number field for parts diagrams and ordering.
| Label field | What it’s used for | Example you might see |
|---|---|---|
| Model number | Finding correct parts and diagrams | 917.270940 or 917270940 |
| Serial number | Identifying production run | Varies |
| Engine info | Engine parts and tune-up specs | Varies |
Why it matters
We use the model number to match the correct mower deck, drive system, and steering parts for your exact tractor. For example, deck components like the husqvarna lawn tractor mulching blade, 21-in 532134149 and belt routing can vary by model and deck configuration.
Tip if the label is missing or unreadable
- Check for a second label on the frame near the seat mounting area
- Compare your deck and chassis parts to the exploded views in the manual
- Use the mower deck parts list to confirm common deck items (housing, mandrel, blade, idlers)
Last updated: February 2026
What year did Craftsman make the 917270940 tractor?
Craftsman model 917270940 is from the early 2000s era; the most reliable way to pin down the exact build year is to match your tractor’s product ID and decal set to the parts and identification details in the 917270940 owner's manual.
How to identify the exact year on your tractor
Use these checks on the machine itself (they work even if decals are worn):
- Look under the seat or on the rear fender pan for a model and serial/product ID label.
- Compare your hood and fender decals to the decal listing in the manual (the decal set changes by production run).
- Confirm whether your tractor has a 42-inch mower deck; the manual’s mower deck breakdown for 917270940 lists a 42-inch deck blade.
- Match key deck parts to your tractor, such as the husqvarna lawn tractor mulching blade, 21-in 532134149.
- If your tractor has a hydro bypass decal or lever, compare it to the manual’s decal section.
What we can confirm from the model documentation
The documentation confirms the model number and provides detailed parts breakdowns (chassis, decals, lift assembly, mower deck), which is what you use to verify the production run.
| What you have | What it tells us | Where to check |
|---|---|---|
| Model number 917270940 | Correct family of tractor | ID label on tractor |
| Serial/product ID | Exact build run (best for year) | ID label under seat/fender |
| Decal set | Narrows to a specific production period | Manual decal pages |
| Deck parts match | Confirms deck configuration | Deck housing and blade |
Why it matters
The build year affects which Craftsman parts fit correctly, especially mower deck components (blade, mandrel, belt routing decals) and chassis items. Confirming the exact run helps prevent ordering the wrong blade, mandrel assembly, or drive belt.
Last updated: February 2026
What model number is a Craftsman 917270940 lawn mower?
The model number for this Craftsman riding lawn tractor is 917.270940 (often written without the dot as 917270940). You can confirm it on the product ID label and in the 917270940 owner's manual, which lists the tractor as a 20.0 HP electric start, 42-inch mower.
Where to find the model number on the tractor
Check these common locations first:
- Under the seat on the fender pan or seat deck area
- On the frame near the engine compartment
- Near the rear hitch plate or drawbar area
- On a sticker or metal tag that also lists the serial number
How the model number is typically formatted
Craftsman model numbers are commonly shown two ways; both refer to the same tractor.
| You might see | It means |
|---|---|
| 917.270940 | Standard manual and parts diagram format |
| 917270940 | Same model number without punctuation (common in online searches) |
Why it matters
Using the exact model number ensures you get the right diagrams, maintenance specs, and parts for your 42-inch mower deck and chassis. For example, the mower deck parts list for model 917.270940 includes items like the husqvarna lawn tractor mulching blade, 21-in 532134149 and other deck hardware that can vary by model.
Quick tips when ordering parts for 917270940
- Match the model number exactly: 917270940
- Use the deck size and configuration (42-inch deck) to narrow results
- Compare the part ID on the diagram to the part you are replacing
- If your label is damaged, use the manual diagrams to identify assemblies (deck, chassis, steering)
Last updated: February 2026
What model number is the Craftsman 917270940 engine?
The Craftsman tractor model 917270940 is equipped with a Briggs & Stratton engine model 461707 with type number 0145-E3. This engine identification appears in the engine breakdown for this tractor in the 917270940 owner's manual.
Where to confirm the engine model and type
Use these reliable spots on a Craftsman riding mower to match the exact engine for parts and service:
- The Briggs & Stratton engine ID label (commonly on the blower housing or near the valve cover)
- The engine breakdown pages in the 917270940 owner's manual
- The engine shroud stamping or tag (varies by engine family)
- Your tractor frame tag (confirms tractor model 917270940, not the engine model)
Quick reference: tractor model vs. engine model
These numbers are used for different kinds of parts ordering.
| Identifier | What it identifies | For this unit |
|---|---|---|
| Tractor model number | The Craftsman tractor and chassis | 917270940 |
| Engine model number | The Briggs & Stratton engine family | 461707 |
| Engine type number | The exact engine build configuration | 0145-E3 |
Why it matters
Briggs & Stratton engines often share the same model number across multiple tractors; the type number is what ensures you get the correct carburetor parts, starter components, gaskets, and ignition parts for your exact build.
If you are ordering tractor and deck parts (not engine-internal parts), use the tractor model number 917270940. For example, deck maintenance commonly includes replacing a worn blade such as the husqvarna lawn tractor mulching blade, 21-in 532134149.
Last updated: February 2026
