Owner’s manual
Should I use 87 or 91 gas for lawn mower?
For the Craftsman walk-behind mower model 917376051, we recommend using 87-octane (regular) unleaded gasoline for normal operation. Higher octane (like 91) does not add power in small mower engines; the bigger priority is using fresh, clean fuel and storing it correctly per the 917376051 owner's manual.
- Use 87 octane unleaded gasoline.
- Use fresh fuel; stale fuel is a common no-start cause.
- Keep fuel clean and dry; water in fuel can cause hard starting and rough running.
- Do not keep gasoline from one mowing season to the next.
- Replace rusty gas cans; rust and debris can contaminate fuel.
The manual lists fuel-related causes like out of fuel, stale fuel, and water in fuel. If your mower will not start:
- Drain old gas from the tank and refill with fresh 87 octane.
- Check the air filter; clean or replace if dirty.
- Inspect the spark plug wire connection.
- Check for a loose blade or damaged blade adapter if you hit something.
- If the self-propelled drive is acting up, inspect the drive system; a worn belt can contribute (see belt 532157769 if you are replacing the drive belt).
| Fuel choice | OK to use? | Best for |
|---|---|---|
| 87 octane (regular) | Yes | Everyday mowing, best value |
| 89 octane (mid-grade) | Yes | No benefit in most cases |
| 91+ octane (premium) | Yes | No performance benefit in mower engines |
Most mower problems blamed on “bad gas” come from stale fuel, contamination, or poor storage, not octane rating. Using fresh 87 octane and storing fuel properly helps prevent hard starting and keeps the carburetor and fuel system running cleaner.
Last updated: February 2026
What model number is the Craftsman 917376051?
The model number for this Craftsman walk-behind mower is 917.376051 (often written without the dot as 917376051). You can confirm it on the model tag and in the 917376051 owner's manual.
Check these common locations on Craftsman walk-behind mowers:
- On the rear of the deck near the discharge opening
- On the top of the deck near the engine mounting area
- On the handle bracket area (left or right side)
- In the paperwork that came with the mower (manual and warranty pages)
This mower has a separate engine model number that is different from the mower model number. For Craftsman model 917376051, the manual shows a Briggs & Stratton engine model 125K02-0542-E1.
| What you are identifying | Example for this mower | Used for |
|---|---|---|
| Mower model number | 917.376051 (917376051) | Finding Craftsman chassis, deck, drive, and handle parts |
| Engine model number | 125K02-0542-E1 | Finding Briggs & Stratton engine parts (carburetor, recoil starter, air filter) |
Using the correct model number helps us match the right walk-behind mower parts (like a drive belt, blade, or transmission components) so the fit and mounting hardware are correct for your exact deck and drive system.
Last updated: February 2026
What model number is the Craftsman 917376051?
The model number is 917.376051; it’s the Craftsman walk-behind gas mower model shown on the identification label and on the cover of the 917376051 owner's manual.
We recommend matching the number in at least two places so you order the right Craftsman parts (blade, belt, transmission, and hardware).
- Check the model tag/label on the mower housing or rear deck area
- Match the format exactly, including the dot: 917.376051
- Compare it to the manual cover page for the same model
- Use the model number when searching diagrams for wheels, drive system, and engine controls
Some customers confuse a Sears/Craftsman model number with an engine model number or a retail model name.
| What you’re looking at | Example | What it’s used for |
|---|---|---|
| Mower model number | 917.376051 | Finding correct Craftsman mower parts and diagrams |
| Engine model number | 125K02-0542-E1 (Briggs & Stratton) | Engine-specific tune-up and internal engine parts |
| Marketing/retail name | “M140” style names | Store listings; not reliable for parts matching |
Using the exact model number 917.376051 ensures the parts you choose match your deck and drive setup, such as the correct 22-inch blade and self-propelled drive components.
If you’re replacing wear items, match by model first, then verify by part diagram and measurements.
Last updated: February 2026
What years did they make the Craftsman 917376051?
Craftsman model 917376051 is a specific walk-behind mower model number, and the most reliable way to tie it to a production timeframe is by using the serial number on the mower’s decal and the identification guidance in the 917376051 owner's manual. Model-year ranges can vary by retailer run and engine configuration, even when the model number stays the same.
We use the mower’s ID decal information because it links your exact unit to its manufacturing run.
- Find the model and serial number decal on the rear of the lawn mower housing
- Write down the serial number exactly as shown
- Record the date of purchase if you still have it (helpful for warranty and parts matching)
- Use the serial number when ordering parts like a blade, belt, or transmission
- Keep the numbers with your maintenance notes (oil changes, blade sharpening, belt replacement)
| What you need | Where it is on 917376051 | Why we use it |
|---|---|---|
| Model number | Rear housing decal | Confirms the exact mower family |
| Serial number | Rear housing decal | Identifies the specific production run |
| Date of purchase | Your receipt or notes | Helps narrow the timeframe for your unit |
Craftsman walk-behind mowers can share similar decks and controls across multiple seasons, but parts and subassemblies can change within a model family. Using the serial number helps ensure you get the right items for maintenance and repair, such as the lawn mower blade 532406713 or the belt 532157769.
Last updated: February 2026
