Owner’s manual
View engine
Should I use 87 or 91 gas for lawn mower?
For the Craftsman gas walk-behind lawn mower model 917377130, we recommend using fresh 87-octane (regular) unleaded gasoline for normal mowing. Higher octane (like 91) does not add power in small mower engines; fuel freshness and correct storage matter more than octane.
What to use (and what to avoid)
- Use 87 octane unleaded gasoline from a busy station (fresher fuel).
- Use fresh fuel; most mower starting and running issues come from old gas.
- Avoid stale gas (especially fuel left in the tank or can for weeks or months).
- Avoid high-ethanol blends (anything above E10) because they attract moisture and can cause hard starting.
- If your mower will sit, use a fuel stabilizer and run the engine briefly to circulate treated fuel.
Quick comparison: 87 vs 91 for a walk-behind mower
| Fuel choice | Best use case | What you will notice |
|---|---|---|
| 87 octane (regular) | Everyday mowing | Normal power and normal starting when fuel is fresh |
| 91 octane (premium) | Not required for typical mower engines | Usually no performance gain; costs more |
Why it matters
Using the right fuel helps prevent carburetor varnish, clogged jets, and hard-start symptoms. Octane mainly prevents knock in high-compression engines; most walk-behind mower engines are designed to run correctly on regular 87.
Tips to prevent fuel problems
- Buy only what you will use in 30 days.
- Store gas in an approved container, tightly sealed.
- Before the off-season, follow the steps in the 917377130 owner's manual.
- If the mower starts but runs rough, a tune-up is often the fastest fix; the briggs & statton tune-up kit 5140B is a common maintenance item for many mower engines.
Last updated: January 2026
What are the most common issues with 917377130?
The most common problems we see on the Craftsman 917377130 gas walk-behind lawn mower involve starting and power loss, uneven cutting, and self-propel/drive issues. These usually trace back to routine wear items (blade, belt, wheels) or basic tune-up needs outlined in the owner's manual.
Common symptoms and what they usually mean
- Hard to start or won’t start: stale fuel, dirty spark plug/air filter, or carburetor varnish; a tune-up often restores normal starting.
- Runs rough or lacks power: clogged air filter, old fuel, or ignition maintenance needed.
- Uneven cut or poor mulching: dull/bent blade, debris buildup under the deck, or incorrect height setting.
- Vibration: damaged blade, loose fasteners, or a worn blade adapter.
- Self-propel won’t pull: worn or stretched drive belt, drive gear wear, or wheel traction/drive components slipping.
Parts that commonly fix these issues
If your symptoms match, these model-compatible parts are frequent solutions:
- Briggs & statton tune-up kit 5140B for basic engine maintenance items
- Lawn mower blade 532406713 for uneven cutting, vibration, or poor bagging
- Belt 532157769 for self-propel/drive problems
- Lawn mower wheel 582976701 if a wheel is worn, wobbly, or losing traction
- Lawn mower blade adapter 581547901 if the blade won’t stay tight or the mower vibrates after blade replacement
Quick checks before you buy parts
- Drain old fuel and refill with fresh fuel (use the correct fuel type noted in the manual).
- Inspect the blade for bends, cracks, or heavy rounding; replace if damaged.
- Tip the mower safely (spark plug wire disconnected) and clear packed grass from the deck.
- Check the drive belt area for glazing, cracking, or slack.
- Verify wheel height adjusters match side-to-side.
Symptom-to-part guide
| Symptom | Most likely area | Common part match on this model |
|---|---|---|
| Uneven cut, vibration | Cutting system | Blade, blade adapter |
| Won’t self-propel | Drive system | Belt, drive gears, wheels |
| Hard starting, surging | Engine tune-up | Tune-up kit |
Why it matters
Catching wear early prevents secondary damage, like a loose blade damaging the crankshaft area or a slipping belt overheating and wearing drive components faster.
Last updated: March 2026
What model number is the Craftsman 917377130?
The model number for this Craftsman gas walk-behind lawn mower is 917377130. Use 917377130 when looking up parts diagrams, ordering replacement parts, and matching the correct Craftsman specifications in the 917377130 owner's manual.
Where to find the model number on the mower
On most Craftsman walk-behind mowers, the model and serial tag is on the mower deck or rear housing. Look for a sticker or metal plate and copy the number exactly.
- Check the rear of the deck near the bagger door
- Check the left or right side of the deck near the wheels
- Wipe off grass and dirt so all digits are readable
- Record the full model number and the serial number
Why the exact model number matters
Craftsman mowers can look similar across years, but parts can differ by model. Using 917377130 helps ensure the correct fit for common service items like the blade, drive belt, wheels, and controls.
| What you are doing | What to use | Why it helps |
|---|---|---|
| Ordering parts | Model number 917377130 | Matches the correct parts list and diagrams |
| Checking maintenance specs | 917377130 owner's manual | Confirms oil type, blade service, and adjustments |
| Replacing wear items | Example: lawn mower blade 532406713 | Helps avoid wrong size or mounting style |
Quick tip for parts matching
If you are replacing a cutting or drive component, compare the old part to the diagram and confirm mounting style before ordering.
- Blade: confirm length and center hole pattern
- Blade adapter: confirm shaft shape and keying
- Drive belt: confirm routing and belt profile
Why it matters
The right model number prevents returns, saves time, and keeps your mower cutting and self-propelling correctly after repairs.
Last updated: January 2026
