Owner’s manual
What engine is in a Craftsman lawn mower?
For Craftsman model 917254274, the owner's manual identifies it as an 11 HP, electric-start front-engine lawn tractor with a 4-speed transmission and a 36-inch mower deck. The manual does not list a specific engine brand in the sections provided, so we use the model’s published HP and configuration for identification.
The most reliable way is to match the engine’s ID tag to the tractor model information.
- Look for an engine ID label on the blower housing, valve cover, or near the starter
- Record the engine model, type, and code (or serial number)
- Compare those numbers to the engine section in the owner's manual
- If the label is missing, check for stamped numbers on the engine shroud or block
- Use the parts list for this model first; for broader searching by model number, use Sears PartsDirect
If you are troubleshooting starting or running issues, these checks narrow it down quickly.
| Symptom | Most common cause | What to check first |
|---|---|---|
| Clicks but will not crank | Weak battery or starter circuit issue | Battery terminals, starter solenoid |
| Cranks but will not start | Fuel or ignition issue | Fuel quality, spark plug, air filter |
| Starts then dies | Safety interlock or fuel delivery | Brake switch, fuel cap vent |
Model-matched parts that often apply during no-start diagnostics include the solenoid 532146154 and the lawn tractor ignition switch 532365402.
The exact engine model determines the correct tune-up parts (spark plug, air filter, fuel system parts) and the right maintenance specs (oil type, oil capacity, and service intervals). Using the engine ID prevents ordering the wrong parts.
Last updated: February 2026
What model number is the Craftsman 42 riding mower?
For the Craftsman riding mower on this page, the model number is 917254274. You can confirm it on the tractor’s model plate (typically under the seat) and in the 917254274 owner's manual.
We use the model number to match the correct parts (belts, ignition switch, solenoid) and the right maintenance instructions.
- Look under the seat for the model plate (the manual notes the serial number is found there, and the model plate is in the same area).
- Check the front cover of the manual; it lists MODEL NO. 917.254274.
- If the plate is dirty or faded, wipe it clean and use a flashlight to read stamped characters.
- Record both the model number and serial number for future parts lookups.
The question mentions a “Craftsman 42 riding mower,” but the documentation for model 917254274 describes a 36-inch mower deck. That means “42” may refer to a different Craftsman model, even if the tractor looks similar.
| Item | What we see for model 917254274 | Why it matters |
|---|---|---|
| Model number | 917254274 | Ensures correct parts fit |
| Deck size in manual | 36-inch | Deck size affects belt length, blades, and pulleys |
| Where to verify | Model plate under seat; manual cover | Prevents ordering the wrong parts |
If you are ordering parts, match by 917254274 first, then confirm the part description.
- Ground drive belt: v-belt 532125907
- Blade drive belt: lawn tractor blade drive belt 532106085
- Starter circuit: solenoid 532146154
- Key switch: lawn tractor ignition switch 532365402
Craftsman tractors can share similar frames across years, but deck size and drive systems change belt routing and part dimensions. Using the exact model number prevents repeat repairs and return trips.
To order, use the parts list for model 917254274 on this page, or search by model number on Sears PartsDirect.
Last updated: February 2026
What are the common problems with Craftsman lawn mowers?
Common problems on a Craftsman riding mower like model 917254274 are no-start or click-no-crank issues, rough running from fuel or air restrictions, poor cut quality (uneven cut, vibration, clumping), and drive or deck problems caused by worn belts, idlers, or pulleys. Our 917254274 owner's manual troubleshooting and maintenance sections cover the most frequent checks.
- Engine clicks but won’t turn over: weak battery, loose/corroded cables, bad solenoid, or a safety interlock not made.
- Engine spins but won’t start: stale fuel, dirty air filter, fouled spark plug, or carburetor issues.
- Mower blades won’t rotate: deck belt out of adjustment, belt worn/broken, frozen idler pulley/mandrel.
- Uneven cut or scalping: deck not leveled front-to-rear or side-to-side, tire pressure uneven, blades installed wrong or worn.
- Excessive vibration: bent/unbalanced blade, damaged deck, loose blade hardware.
The manual for this tractor points to these high-impact items for mower performance problems:
| Problem | What to check first | Typical fix |
|---|---|---|
| Blades won’t rotate | Mower drive belt condition and adjustment | Replace or re-adjust belt; inspect idlers/mandrels |
| Uneven cut | Tire air pressure; deck level (front-to-rear and side-to-side) | Inflate tires evenly; level the deck |
| Vibration | Bent or unbalanced blades | Replace blade; balance if sharpening |
When replacing blades, the manual specifies installing the blade with the sharp edge down and tightening blade bolts to 30 to 35 ft-lbs using Grade 5 heat-treated bolts.
If symptoms point to belt or engagement issues, these parts are frequent wear items:
- Ground drive belt (tractor won’t move or slips): v-belt 532125907
- Deck/blade drive belt (blades won’t spin or slip): lawn tractor blade drive belt 532106085
- Starter circuit click-no-crank: solenoid 532146154
- Key switch problems (intermittent power/start): lawn tractor ignition switch 532365402
Catching belt wear, blade balance issues, and safety interlock problems early prevents poor cut quality, repeated no-starts, and avoidable damage to pulleys, mandrels, and the mower deck.
You can order replacement parts for Craftsman 917254274 from the parts list for this model, or search by model number on Sears PartsDirect.
Last updated: February 2026
What year is my Craftsman mower serial number lookup?
For Craftsman tractor model 917254274, the serial number you need for a year lookup is on the model plate under the seat. Use the full model number plus the full serial number to identify the production timeframe, then confirm by matching your tractor’s configuration in the 917254274 owner's manual.
The manual specifies the model plate location under the seat. Record the information exactly as shown:
- Model number: 917254274
- Serial number: copy every character in order
- Date of purchase (if known)
- Engine identification numbers from the engine label (model, type, code)
Craftsman serial-number formats vary by production run, so we use a verification process rather than relying on one universal date-code rule.
- Start with the model plate serial number under the seat
- Cross-check the tractor’s major features against the manual (controls, deck setup, and service procedures)
- Use parts identification to confirm you are on the correct platform before ordering replacements
| Method | Best use | What to do |
|---|---|---|
| Model plate serial number | Primary identifier | Record it exactly; avoid guessing missing characters |
| Manual match | Confirms correct tractor platform | Compare control layout and maintenance sections |
| Parts match | Confirms fit for repairs | Verify common items like starting and drive components |
If you are troubleshooting starting or drive issues while identifying the tractor, these model-linked parts can help confirm fit:
- Solenoid 532146154 (starter solenoid)
- Lawn tractor ignition switch 532365402 (key switch)
- V-belt 532125907 (ground drive belt)
Getting the year and configuration right prevents ordering a part that looks similar but mounts differently; this is especially important for belts, electrical starting parts, and deck components.
After you confirm the model and serial information, order from the parts list for 917254274 on this model page, or search by model number on Sears PartsDirect.
Last updated: February 2026
