Owner’s manual
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Should I use 87 or 93 for lawn mower?
For the Craftsman lawn mower model 917374093, we recommend using fresh, clean regular unleaded gasoline with a minimum of 87 octane (AKI); using 93 octane typically provides no benefit in small mower engines unless your manual specifically calls for it. For exact fuel guidance and any altitude notes, follow the 917374093 owner's manual.
- Use 87 octane (AKI) or higher regular unleaded gas.
- Buy fuel in small quantities; gas can start degrading in about 30 days.
- Use a fuel stabilizer if the mower will sit more than a few weeks.
- Avoid old fuel, water-contaminated fuel, and dirty storage cans.
- If your area sells ethanol-blended fuel, keep it fresh and do not store it long-term.
| Fuel choice | When it makes sense | What you should expect |
|---|---|---|
| 87 octane | Normal mowing, most conditions | Proper performance when the engine is in good tune |
| 93 octane | Only if the manual requires it or you have a specific engine issue being diagnosed | Usually no noticeable power gain; higher cost |
- Drain the tank and refill with fresh 87 octane.
- Check the air filter and spark plug condition.
- Inspect for stale fuel symptoms (hard starting, surging, loss of power).
- If the blade hit something, check for vibration and consider replacing the blade with the correct 22-inch deck blade, such as the husqvarna lawn mower 22-inch deck 3-in-1 blade 532421825.
Correct octane and fresh fuel help prevent hard-starting, surging, and carburetor varnish. In most walk-behind mowers, fuel freshness affects reliability far more than choosing 93 over 87.
For storage best practices, follow how to keep lawn mower gas from going bad.
Last updated: January 2026
What are the most common issues with 917374093?
The most common issues we see on the Craftsman 917374093 walk-behind mower involve poor cutting and bagging performance, self-propel/drive problems, and control or safety-handle concerns. These problems usually trace back to normal wear items like the blade, drive belt/cable, wheels, or discharge and bagging components; use the 917374093 owner's manual for model-specific adjustments and maintenance.
- Cuts unevenly or leaves strips: blade is dull/bent, deck is packed with wet grass, or wheels are worn/uneven.
- Clumps grass or blows out the side: baffle/deflector issues, clogged deck, or bagging parts not sealing.
- Self-propel is weak or won’t pull: worn drive belt, stretched/misadjusted drive cable, or drive pawls slipping.
- Handle controls feel loose or don’t engage: control cable out of adjustment, kinked, or binding.
- Poor bag fill or bag won’t stay on: bag frame fit issue, torn bag, or chute/door not opening fully.
- Shut the mower off, let it cool, and disconnect the spark plug wire.
- Tip the mower safely (air filter and carburetor side up) and clear packed grass from the deck.
- Inspect the blade for nicks, bends, and excessive rounding; replace if damaged.
- Check drive engagement: squeeze the drive control and watch for belt movement and cable tension.
- Verify wheels roll freely and sit at the same height setting.
| Symptom | Likely wear item | Example part for this model |
|---|---|---|
| Poor cut quality | Blade | Husqvarna lawn mower 22-inch deck 3-in-1 blade 532421825 |
| Weak/no self-propel | Drive belt | Lawn mower ground drive belt, 3/8 x 35-3/8-in 532421527 |
| Drive won’t engage smoothly | Drive cable | Lawn mower drive cable 583441401 |
| Bagging/discharge problems | Grass bag or deflector | Lawn mower grass bag 580943401 |
A worn blade and slipping drive system make the mower work harder, reduce cut quality, and can accelerate wear on the deck, wheels, and control components. Keeping the deck clean and the drive adjusted helps the 917374093 mow evenly and self-propel consistently.
Last updated: March 2026
What model number is the Craftsman 917374093?
The model number for this Craftsman walk-behind mower is 917374093. You’ll typically find it on the mower’s model and serial number label; matching that number ensures you get the correct diagrams, parts (like blades and drive belts), and maintenance instructions for your exact unit.
On most Craftsman walk-behind mowers, the model/serial label is located on the mower deck or near the rear of the deck behind the engine.
- Check the top of the deck near the engine mounting area
- Check the rear deck panel near the bagger opening
- Look for a sticker or metal tag labeled Model and Serial
- Wipe off grass and dirt; the label is often hard to read when dirty
- Write down the full model number exactly as shown: 917374093
Using the correct model number helps us match the right part design for your mower’s deck size, drive system, and handle controls.
| What you’re doing | Why the exact model number matters | Example for this model |
|---|---|---|
| Replacing a blade | Deck and adapter patterns vary | Husqvarna lawn mower 22-inch deck 3-in-1 blade 532421825 |
| Fixing self-propel drive | Belt length and routing must match | Lawn mower ground drive belt, 3/8 x 35-3/8-in 532421527 |
| Looking up procedures | Specs and adjustments are model-specific | 917374093 owner's manual |
The model number 917374093 is sometimes confused with other 917-series Craftsman models (including tractors). Use these checks to stay on track:
- Confirm it says gas lawn mower (walk-behind), not tractor
- Match all digits; do not drop or swap numbers
- Use the model number from the mower label, not the engine label
A single digit off can lead to the wrong blade, belt, or control cable, which can cause poor cutting, fit issues, or unsafe operation.
Last updated: January 2026
