Owner’s manual
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What are the parts of a tractor engine?
On the Craftsman 917276903 front-engine lawn tractor, the engine is built from core internal parts (like the cylinder, piston, and crankshaft) plus supporting systems (fuel, ignition, lubrication, cooling, and exhaust) that work together to start, run smoothly, and deliver power to the drivetrain and mower deck. For model-specific service points and safety rules, use the 917276903 owner's manual.
Main engine parts (internal “hard parts”)
These parts create compression and convert combustion into rotating power:
- Cylinder block and cylinder head
- Piston and piston rings
- Connecting rod and rod bearings
- Crankshaft and main bearings
- Camshaft, lifters, and timing components
- Valves, valve springs, and valve guides
Supporting systems you will service most often
These systems are usually involved when a tractor will not start, runs rough, or loses power:
- Fuel system: fuel tank, fuel lines, fuel filter, carburetor (or injection on some engines)
- Ignition system: ignition switch, safety interlocks, coil/module, spark plug
- Lubrication: oil sump, oil pump (if equipped), oil filter (if equipped)
- Air intake: air filter, intake tube, choke linkage
- Charging/starting: battery, starter, starter solenoid
- Exhaust: muffler, spark arrester (where required)
Quick “what it does” reference
| Engine area | What it does | Common symptom when it fails |
|---|---|---|
| Compression parts (piston/rings/valves) | Builds power | Hard starting, low power, smoke |
| Fuel + air | Feeds combustion | Surging, stalling, no-start |
| Ignition | Creates spark at the right time | Cranks but will not start |
| Lubrication | Prevents wear/overheating | Knocking, seizure risk |
| Starting circuit | Spins engine to start | Clicks, slow crank, no crank |
Why it matters
Knowing which “system” a part belongs to helps you troubleshoot faster. For example, a no-crank problem often points to the starting circuit; on this model, a common service item in that circuit is the lawn tractor starter solenoid 582042802.
Last updated: February 2026
What kind of engine does a Craftsman riding lawn mower have?
For Craftsman lawn tractor model 917276903, the operator’s manual lists a 26.0 HP tractor with electric start and a 54-inch mower deck. To identify the exact engine make and engine model (Briggs & Stratton, Kohler, etc.), match the numbers on the engine ID tag to the specifications in the 917276903 owner’s manual.
What the manual tells you for model 917276903
These are the key, model-specific details we use when confirming the tractor configuration:
- 26.0 HP engine rating shown on the manual cover
- Electric start
- 54-inch cutting deck size
- Operate the throttle at full speed (fast) for best mowing performance
- Use the choke for cold starts (do not use choke to stop the engine)
How to find the exact engine manufacturer and model
Craftsman tractors can be built with different engine suppliers; the engine tag is the deciding factor.
- Lift the hood and locate the engine ID label (often on the blower housing, valve cover, or near the starter)
- Record all numbers shown (commonly model, type/spec, and code/serial)
- Use those numbers to select the correct tune-up parts (spark plug, air filter, fuel filter)
- Cross-check the tractor’s configuration details in the 917276903 owner’s manual
Quick identification table
| Item to check | Where you’ll see it | What it confirms |
|---|---|---|
| Tractor model number | Tractor frame tag (usually under seat or on frame) | You have model 917276903 |
| Engine model/type/code | Engine ID label under hood | Exact engine make and model family |
| Deck size | Deck shell label or manual | 54-inch deck configuration |
Why it matters
The engine make and model determine the correct maintenance parts and settings. Using the wrong spark plug, air filter, or fuel filter can cause hard starting, rough running, and loss of power.
Last updated: February 2026
What model number is a Craftsman 6.75 lawn mower?
Craftsman “6.75” is an engine-size label used on multiple walk-behind mowers, so it is not a single model number. If you are asking about our Craftsman riding tractor shown here, the model number is 917276903; it’s a 26.0 HP, 54-inch front-engine tractor (see the 917276903 owner's manual).
How to identify the model number on a Craftsman 6.75 walk-behind mower
Use the equipment ID tag, not the engine decal.
- Look for a model/product label on the mower deck (often near the rear discharge area) or on the rear of the deck
- Write down the full model number and product number exactly as shown
- Record the serial number; it helps match the correct parts revision
- Use that model number to pull the correct diagrams for blades, belts, wheels, and controls
If you meant the Craftsman riding tractor model 917276903
This tractor’s model identification and key specs are listed in the manual.
- Model number: 917276903
- Engine rating shown in manual: 26.0 HP
- Mower deck size shown in manual: 54 in.
- Typical model tag locations: under the seat, on the frame rail, or near the engine compartment
| You have | What “6.75” usually means | What 917276903 is |
|---|---|---|
| Walk-behind mower | Engine label used across many models | Not applicable |
| Riding lawn tractor | Not typically labeled “6.75” | 26.0 HP, 54 in. deck |
Why it matters
Parts are matched by the full model number, not the engine label. Using the correct model number prevents ordering the wrong blade, belt, ignition parts, or deck hardware.
Common parts people mix up on 917276903
If you are ordering tractor parts, match by diagram and location.
- Deck spindle and housing parts (mandrel area); example: lawn tractor mandrel housing 587819701
- Blade engagement electrical parts; example: switch.pto 582107601
- Starting circuit components; example: lawn tractor starter solenoid 582042802
Last updated: February 2026
What brand engine does Craftsman use?
Craftsman uses multiple engine brands across its riding mowers and tractors, including Briggs & Stratton and Kohler. For Craftsman model 917276903, confirm the exact engine brand and engine model numbers by reading the engine ID label and cross-checking the specifications section in the 917276903 owner's manual.
How to identify the engine brand on model 917276903
Use these quick checks (no disassembly needed):
- Look for the brand decal on the engine shroud (top or side of the engine).
- Find the engine identification label; it lists the manufacturer plus model and serial details.
- Check the emissions label near the muffler or on the shroud; it often names the engine maker.
- Write down every field on the label (model, spec/type, and code/serial).
- Match those numbers to the tractor documentation and use them when ordering tune-up parts.
Common engine ID label formats
These are the most common label layouts you will see on Craftsman tractors:
| Engine brand | Label fields you typically see | What to record |
|---|---|---|
| Briggs & Stratton | Model / Type / Code | All three fields |
| Kohler | Model / Spec / Serial | All three fields |
| Kawasaki | Model / Spec / Serial | All three fields |
Why it matters
The engine brand and engine model code determine the correct maintenance parts (air filter, oil filter, spark plug) and help with starting and charging diagnostics. If you are troubleshooting a click but no crank condition, the starter circuit often includes the lawn tractor starter solenoid 582042802.
Last updated: February 2026
