Can you use 10% ethanol gas in a lawn mower?
Yes. For a Craftsman walk-behind mower like model 917370681, you can use gasoline with up to 10% ethanol (E10). Avoid fuel blends higher than 10% ethanol because they can pull in moisture, run lean, and accelerate wear in the carburetor and fuel system.
What fuel to use (and what to avoid)
- Use fresh, unleaded gasoline with 10% ethanol or less.
- Avoid E15, E20, E85 or any “flex fuel” blends.
- Avoid old gas; fuel that sits can cause hard starting and surging.
- If you store fuel, use a stabilizer and rotate it regularly.
- Keep the gas can sealed to reduce water contamination.
Quick checklist if the mower runs rough after E10
- Drain and replace old fuel with fresh E10.
- Check the air filter and replace if dirty.
- Inspect the spark plug; replace if fouled.
- Clean the deck to reduce load on the engine.
- If it still surges or won’t idle, the carburetor may need cleaning.
Typical fuel blend comparison
| Fuel blend | Common label | Recommended for 917370681? | Why |
|---|---|---|---|
| 0% ethanol | “E0” | Yes | Best for storage and consistent running |
| 10% ethanol | “E10” | Yes | Common pump gas; works when fresh |
| 15% ethanol | “E15” | No | Higher moisture risk; can cause running issues |
| 85% ethanol | “E85” | No | Not compatible with small-engine fuel systems |
Why it matters
Small engines on walk-behind mowers are sensitive to fuel quality. Higher-ethanol blends can separate in the tank, attract water, and leave varnish deposits that clog jets and passages, leading to hard starting, stalling, or loss of power.
For model-specific operating and storage guidance, follow the fuel and maintenance sections in the owner's manual.
Last updated: February 2026
What year is Craftsman Model 917370681?
Craftsman model 917370681 is a model number, not a date code, so it does not directly tell you the mower’s year. To identify the year, we use the mower’s product identification label (often showing a serial number or date code) and decode that information using the owner's manual.
Where to find the build date information
On most Craftsman walk-behind mowers, the date-related info is on the product label located in one of these common spots:
- Rear of the deck near the discharge opening
- Top of the deck near the engine mounting area
- Back of the mower near the height adjusters
- Handle bracket area (near where the handle bolts to the deck)
How to decode it (what to look for)
Once you find the label, look for a serial number or a date code. Common formats include:
- MMDDYY (month, day, year)
- YYMMDD (year, month, day)
- A longer serial number where the first 6 digits represent a date
Quick examples
| Code format | Example | What it means |
|---|---|---|
| MMDDYY | 072811 | July 28, 2011 |
| YYMMDD | 110728 | July 28, 2011 |
Why it matters
Knowing the build year helps us match the correct Craftsman parts and diagrams for wear items like the blade, wheels, and drive system. For example, if you are servicing the cutting system, matching the correct 22-inch blade style is key (see husqvarna lawn mower 22-inch deck 3-in-1 blade 532421825).
Last updated: February 2026
Why is my self-propelled lawn mower pulling to one side?
If your Craftsman 917370681 self-propelled mower pulls to one side, the most common causes are uneven wheel traction (tire pressure, worn wheel tread, or a dragging wheel) or a drive system issue on one side (cable adjustment, pawl/pinion wear). Start with the wheels because they are the fastest checks.
Quick checks that fix most “pulling” problems
- Check tire pressure and inflate both drive wheels evenly.
- Inspect both rear wheels for uneven tread wear, wobble, or binding.
- Clean packed grass and debris from around the wheels and axle ends.
- Verify the mower rolls straight with the drive disengaged.
- Confirm the drive control fully releases when you let go.
Drive-side causes (when tire pressure is fine)
On many walk-behind self-propelled mowers, one wheel can stop driving as strongly if the wheel drive parts are worn or slipping.
Common culprits:
- Worn wheel and tire: replace the affected wheel if tread is smooth or the hub is damaged (use the correct size wheel such as lawn mower wheel and tire, 8 x 1.75-in 583719501).
- Worn drive pawl or gear: a slipping pawl can make one side “freewheel” under load (check drive pawl 532404845 and the mating gear such as pinion.14.te 532403849).
- Drive cable out of adjustment or stretched: if the cable does not pull the transmission engagement fully, drive can be uneven side-to-side (inspect lawn mower drive cable 586638001 routing and condition).
A simple test to pinpoint the side
| Test | What to do | What it means |
|---|---|---|
| Push test (drive off) | Push mower on flat ground | If it still pulls, a wheel is dragging or misaligned |
| Lift-and-spin test | Lift rear; spin each wheel by hand | The “hard to spin” side is binding or rubbing |
| Drive test (light load) | Engage drive on pavement | If one wheel lags, suspect pawl/pinion/cable on that side |
Why it matters
A mower that pulls to one side is harder to control and can accelerate wear on the transmission, wheels, and drive components. Fixing traction or a slipping drive part restores straight tracking and consistent self-propelled speed.
Model-specific reference
For control locations, drive engagement checks, and any adjustment procedure used on the Craftsman 917370681, follow the diagrams and operating steps in the owner's manual.
Last updated: February 2026
What are the common problems with Craftsman lawn mowers?
Common problems on the Craftsman 917370681 gas walk-behind mower are no-start conditions (fuel, spark, air), poor cutting (dull or damaged blade, deck clogging), and self-propel issues (cable, drive parts, transmission). We recommend starting with quick safety and maintenance checks from the owner's manual.
Most common symptoms and what usually causes them
- Won't start or starts then dies: stale fuel, dirty carburetor, fouled spark plug, clogged air filter
- Hard to pull the starter rope: blade obstruction, debris jammed under the deck, engine hydro-locked from overfilling oil
- Cuts unevenly or leaves strips: dull/bent blade, blade installed incorrectly, deck packed with wet grass
- Excess vibration: bent blade, loose blade hardware, damaged crankshaft (after impact)
- Self-propel won't move or slips: stretched/broken drive cable, worn drive wheel components, transmission wear
Quick checks we use first (fast, high success)
- Disconnect the spark plug wire before working near the blade.
- Tip the mower with the air filter and carburetor side up (prevents fuel/oil flooding).
- Check fuel freshness; drain old fuel if it smells sour or looks dark.
- Inspect the underside of the deck for packed grass and sticks.
- Check the blade for damage; replace if bent or badly nicked.
Parts that commonly solve these issues on model 917370681
| Problem | Common fix | Example part on this model |
|---|---|---|
| Poor cut, vibration, scalping | Replace blade | Husqvarna lawn mower 22-inch deck 3-in-1 blade 532421825 |
| Self-propel weak or not engaging | Inspect/adjust/replace drive cable | Lawn mower drive cable 586638001 |
| Mower pulls to one side, drive traction issues | Replace worn wheel/tire | Lawn mower wheel and tire, 8 x 1.75-in 583719501 |
| Discharge/mulch performance problems | Repair chute/door hardware | Lawn mower clipping deflector 532426129 |
Why it matters
Catching small issues early (like a dull blade or stretched cable) prevents bigger failures, improves cut quality, and reduces strain on the engine and drive system.
Helpful DIY guides
- Use a proper tool and safe method for blade service: lawn mower blade removal tool
- Keep the cut clean and reduce vibration: how to sharpen a lawn mower blade
- If the mower will not drive: lawn mower wont move troubleshooting video motion drive failure
Last updated: February 2026





