Owner’s manual
How to find Craftsman model number?
For your Craftsman electric walk-behind mulching mower, the model number is on the mower’s identification label, typically on the mower deck (often on the underside of the deck). Once you have the model number (for example, 900370511), use it to match the correct parts list and manual.
Check these common label locations first:
- Underside of the mower deck (tilt the mower safely to view)
- Top of the deck near the rear discharge area
- Near the rear wheels or rear deflector mounting area
- On the handle frame near the cord retention area
- On a label plate or sticker that also lists electrical specs (120V information)
Model labels can include punctuation or spacing. Use these tips so you record it accurately:
- Write the model number exactly as shown (example: 900.370511 may appear with a dot)
- Ignore marketing names; use the model number for parts matching
- If a serial number is present, record it too (helpful for version changes)
- Take a clear photo of the label before it gets dirty or faded
| What you see | What it’s used for | Use it to order parts? |
|---|---|---|
| Model number (900370511 or 900.370511) | Identifies the exact mower design | Yes |
| Serial number | Production run identifier | Sometimes helpful |
| Form/document number (example: 90512524) | Manual printing reference | No |
Using the exact model number keeps you from ordering the wrong blade, rear deflector, switch, or wiring components. Even small design changes between similar Craftsman mowers can affect fit and electrical compatibility.
For model-specific label examples and diagrams, use the 900370511 owner's manual.
Last updated: February 2026
What are the common problems with CRAFTSMAN lawn mowers?
Common problems on a Craftsman lawn mower depend on whether it is gas or electric. For the Craftsman 900370511 electric mulching mower, the most common issues are no power (outlet, fuse/breaker, extension cord), the motor slowing from heavy grass or a clogged deck, poor cut from a dull blade, and excessive vibration that signals a mechanical problem; use the 900370511 owner's manual troubleshooting guide to match symptoms to checks.
- Motor will not start: no power at the outlet, tripped fuse/circuit breaker, bad extension cord, or a switch/safety issue.
- Motor keeps slowing down: grass too tall, pushing too fast, or the underside of the deck packed with clippings.
- Runs but poor cut results: blade is dull or unbalanced; cutting height is too low for conditions.
- Excess vibration: blade damage, loose fasteners, or debris caught under the deck (stop immediately).
- Mower leaves clumps or discharge/bag plugging: too much grass for mulching; deck needs cleaning; consider switching to discharge mode.
- Confirm the outlet has power; check the fuse or circuit breaker.
- Test the extension cord with another device; this mower uses a polarized plug, so use a compatible extension cord.
- If the motor slows, turn the mower off, wait for the blade to stop, and unplug; then clear packed clippings from the underside.
- Raise the cutting height and slow your pace in tall or damp grass.
- If vibration is abnormal, release the switch lever, unplug, and inspect the blade area before using it again.
| Symptom | Most likely cause | Best first action |
|---|---|---|
| Won’t start | No power or cord issue | Check breaker, outlet, then extension cord |
| Slows down | Deck clogged or grass too tall | Unplug and clean deck; raise height |
| Poor cut | Dull/unbalanced blade | Inspect blade; sharpen/replace as needed |
| Vibrates | Blade damage or debris | Stop, unplug, inspect immediately |
On the 900370511, slowing, clumping, and poor cut are often caused by mowing conditions and deck buildup, while abnormal vibration is a safety warning. Keeping the deck clean and the blade sharp improves cut quality and reduces strain on the motor.
Last updated: February 2026
What year is CRAFTSMAN Model 900370511?
The Craftsman mulching mower model 900370511 is documented in an owner’s manual printed July 2007, so this model is from the 2007 era. For the most accurate date details tied to your exact unit, use the date code and identification information shown in the 900370511 owner's manual.
We use two pieces of information: the model number (900370511) and the unit’s identification label (often called a nameplate).
- Find the nameplate on the mower deck or housing (commonly near the motor area or rear deck).
- Record the model number and any date code/serial information shown.
- Compare what you see to the identification guidance in the 900370511 owner's manual.
- If the label is worn, clean it gently with a dry cloth so the characters are readable.
- Keep the information with your maintenance notes for future parts lookups.
The owner’s manual for this Craftsman 120-volt convertible mulching mower lists the model number and a print date.
| Item | What it tells you | What to use it for |
|---|---|---|
| Model number: 900370511 | Identifies the mower design family | Matching parts diagrams and specs |
| Manual print date: July 2007 | Confirms the model documentation timeframe | Estimating the mower’s era |
| Nameplate/date code | Identifies your exact production unit | Pinpointing the unit’s build date |
Knowing the correct year or production date helps us match the right electrical components and wear items (like the blade, rear deflector, and switches) and prevents ordering parts that look similar but do not fit.
Last updated: February 2026
