Owner’s manual
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How much does it cost to repair a hydrostatic transmission on a lawn mower?
Hydrostatic transmission repairs are typically a riding-mower cost category; the Craftsman 917385123 is a gas walk-behind mower and normally does not use a hydrostatic transmission. For walk-behind drive problems, the repair cost is usually much lower and often involves cables, wheels, or deck hardware instead of a transmission.
Hydrostatic transmission work usually applies to riding mowers and garden tractors.
- Hydrostatic transmission replacement (riding mower): commonly $1,300 to $2,500 installed
- Hydrostatic transmission repair (riding mower): often several hundred dollars depending on parts and labor
- Walk-behind mower drive issue (this model type): commonly $30 to $200 for parts, plus labor if you hire service
| Mower type | Likely “transmission” type | Typical repair scope | Typical cost range |
|---|---|---|---|
| Walk-behind mower (Craftsman 917385123) | Belt/cable/wheel drive components | Cable adjustment, wheel/drive parts | $30 to $200 + labor |
| Riding mower | Hydrostatic transaxle | Replace transaxle or internal repair | $1,300 to $2,500 installed |
On a hydrostatic riding mower, you usually see a forward/reverse pedal or lever controlling speed smoothly (no shifting). On a walk-behind mower like the 917385123, drive issues are more often tied to the handle controls and wheel drive components.
- Drive control feels loose or does not engage
- Mower pulls intermittently or slips under load
- Wheels do not turn even though the engine runs
- Cable routing is kinked, stretched, or out of adjustment
For model-specific adjustment and service checks, follow the 917385123 owner's manual.
If your Craftsman 917385123 will not self-propel, start with the simple mechanical items that fail most often.
- Inspect the wheel assemblies for wear or binding
- Check the drive control cable for damage and proper routing
- Verify fasteners at the handle and brackets are tight
- Confirm the blade and deck area are not packed with debris (drag can feel like drive failure)
If you are replacing a wheel, match the exact assembly used on this model, such as the lawn mower wheel assembly 583720201.
Hydrostatic transmission repairs can be expensive, so confirming the mower type first prevents overpaying for the wrong diagnosis. On the Craftsman 917385123, most “drive” complaints are resolved with adjustments or common wear parts rather than a transmission replacement.
Last updated: January 2026
How old is my mower by serial number?
Your Craftsman walk-behind mower model 917385123 uses a model and serial decal on the rear of the mower housing. The serial number identifies your specific unit, but the most reliable way to determine the mower’s age is to match that serial number to the date-code format shown in the 917385123 owner's manual.
Look for a decal on the rear of the lawn mower housing (behind the deck area). We recommend writing it down exactly as shown.
- Check the rear of the mower housing for the decal
- Record the serial number and your date of purchase
- Copy letters and numbers exactly (no spaces added)
- If the decal is dirty, wipe it gently so every character is readable
Many outdoor power equipment serial numbers include a date code, but the format varies by manufacturer and production run. Use these practical checks:
- Look for a 6-digit block that resembles a date (common patterns include MMDDYY or YYMMDD)
- If you see a 4-digit block, it often represents month and year (for example, MMYY or YYMM)
- Compare the decoded date to your purchase date; the build date is typically earlier
- If the serial includes multiple number groups, the first group is often the date code
| What you see in the serial | Often means | Example interpretation |
|---|---|---|
| 6 digits like 031524 | MMDDYY | March 15, 2024 |
| 6 digits like 240315 | YYMMDD | March 15, 2024 |
| 4 digits like 0921 | MMYY | September 2021 |
Knowing the mower’s age helps us match the correct Craftsman parts and maintenance schedule for your 22-inch deck mower, especially wear items like the blade, blade adapter, and hardware.
| Part | What it affects |
|---|---|
| Lawn mower 22-in deck mulching blade 532406713 | Cut quality, vibration, mulching performance |
| Lawn mower blade adapter 581547901 | Blade fit on the crankshaft, wobble/vibration |
| Lawn mower zone control cable 532183281 | Engine stop control and operator presence control |
Last updated: January 2026
What model number is the Craftsman 917385123?
The model number for this Craftsman walk-behind gas lawn mower is 917.385123 (often written without the dot as 917385123). You’ll see it printed on the mower’s model tag and on the cover page of the 917385123 owner's manual.
Check these common locations on Craftsman walk-behind mowers like model 917385123:
- On the rear of the deck near the discharge area
- On the top of the deck near the engine mounting area
- Near the handle mounting brackets
- On a sticker or metal plate that also lists serial information
Both formats refer to the same mower; the dot is just a formatting style used on some labels and manuals.
| You might see it as | What it means | When it’s used |
|---|---|---|
| 917.385123 | Same model number | Common in the owner’s manual and diagrams |
| 917385123 | Same model number | Common on parts lookups and online searches |
Using the exact model number helps us match the correct diagrams and parts for your mower’s deck, handle, and blade system.
- Blade and blade mounting parts can vary by deck design
- Handle hardware and brackets can differ by production run
- Control cable routing and clamps are model-specific
If you’re replacing blade-related hardware on this model, common related parts include the lawn mower blade adapter 581547901 and the lawn mower 22-in deck mulching blade 532406713.
When searching parts, enter 917385123 (no dot) to get the fastest match.
Last updated: January 2026
