What are the most common issues with 247377470?
The most common issues we see on the Craftsman 247377470 walk-behind mower involve drive problems (won’t self-propel or slips), poor cutting or clumping, and bagging or discharge troubles. These usually trace back to wear items like the drive belt, control cables, blade components, or grass bag hardware; use the 247377470 owner's manual for the correct adjustments and diagrams.
Common symptoms and what typically causes them
- Self-propel won’t move or is weak: stretched or worn drive belt, misadjusted or stretched drive cable, transmission wear
- Drive engages but slips: glazed belt, debris around pulleys, cable out of adjustment
- Uneven cut or poor mulching: dull/bent blade, blade adapter wear, deck packed with wet grass
- Bag won’t fill or clogs: wet grass, restricted airflow, damaged bag or frame, rear skirt/door not sealing
- Excess vibration: bent blade, loose blade hardware, damaged blade adapter
Parts on this model that often solve these problems
If your symptoms match, these model-specific parts are common fixes:
| Symptom | Part to check | What it does |
|---|---|---|
| No/weak self-propel | Lawn mower ground drive belt 954-04259A | Transfers power to the drive system |
| Drive won’t engage | Lawn mower drive control cable 946-04655A | Connects the drive lever to the drive mechanism |
| Vibration or poor cut | Lawn mower blade adapter with pulley 687-02539 | Secures blade and drives pulley system |
| Poor bagging | Lawn mower grass bag 964-04154 and mtd lawn mower grass bag frame 647-04271-0637 | Restores proper collection and airflow |
Quick checks we recommend before replacing parts
- Tip the mower safely (spark plug wire off) and clean packed grass from the deck.
- Inspect the belt for cracking, glazing, or stretching.
- Confirm the drive lever fully tensions the cable; adjust per the manual.
- Check the blade and adapter for damage and tightness.
- For bagging, verify the rear door and skirt close properly and the bag isn’t torn.
Why it matters
Drive and cutting complaints on a 21-inch Craftsman mower like model 247377470 are usually maintenance or wear-item related. Fixing the root cause restores traction, improves cut quality, and reduces strain on the transmission and deck components.
Last updated: March 2026
What gas do I put in my lawn mower?
For the Craftsman lawn mower model 247377470, use fresh regular unleaded gasoline; most small 4-cycle mower engines run best on 87 AKI fuel, and E10 (up to 10% ethanol) is the practical limit for reliable starting and storage. For exact fuel guidance for your engine, follow the 247377470 owner's manual.
Fuel recommendations we use for this mower
- Use fresh, clean, regular unleaded gasoline (87 AKI).
- Use E10 or less (up to 10% ethanol); avoid higher-ethanol blends.
- Do not mix oil into the gas (this is a 4-cycle mower setup).
- Buy fuel in small quantities so it is used within 30 days.
- For storage longer than 30 days, use a fuel stabilizer and run the engine briefly to circulate it.
Quick guide: what to use vs. what to avoid
| Fuel choice | Good for 247377470? | Why it matters |
|---|---|---|
| Regular unleaded 87 AKI | Yes | Reliable performance without extra cost |
| E10 (10% ethanol) | Yes | Common pump fuel; acceptable for most small engines |
| E15 or higher ethanol | No | Increases risk of hard starting and fuel-system issues |
| Old gas (over ~30 days) | No | Causes varnish, gum, and starting problems |
Safe fueling and storage basics
The manual emphasizes that gasoline is extremely flammable; we recommend these habits every time you refuel:
- Shut the engine off and let it cool before fueling.
- Refuel outdoors, away from ignition sources.
- Wipe up spills immediately.
- Store gasoline in an approved container.
- For off-season storage, do not store the mower indoors with fuel in the tank; follow the storage steps in the manual.
Why it matters
Using the right gasoline helps prevent hard starting, rough running, and carburetor gumming, especially after the mower sits. Fresh fuel and proper storage practices reduce downtime and extend engine life.
Last updated: January 2026
What model number is a Craftsman 6.75 lawn mower?
A “Craftsman 6.75” label usually refers to the engine rating, not one single mower model number. For Craftsman walk-behind mowers, the model number is printed on the mower’s ID tag; for your Craftsman mower parts page here, the model number is 247377470. Use the 247377470 owner's manual to confirm the exact model series and features.
Where to find the model number on the mower
Check these common ID-tag locations on Craftsman walk-behind mowers:
- Rear of the deck near the discharge opening or rear door
- Top of the deck near the engine mounting area
- On the rear shield or frame behind the engine
- On the handle bracket area (near the lower handle mounts)
What the ID tag typically shows
| Item on tag | What it means | Example |
|---|---|---|
| Model number | Identifies the mower for parts lookup | 247377470 |
| Serial number | Production identifier | Varies |
| Engine model/type/code | Identifies the engine for tune-up parts | Varies |
Why “6.75” can be confusing
“6.75” is commonly used as an engine family or power rating, and multiple Craftsman mower models can use engines in that range. The mower model number (like 247377470) is what we use to match the correct blade, drive belt, wheels, and handle hardware.
If you are trying to match parts for a 6.75 Craftsman mower
Use the mower model number first, then match the part by description:
- Cutting system parts: blade, blade adapter, deck components
- Drive system parts (self-propelled models): drive belt, drive control cable, transmission
- Bagging parts: grass bag and frame
For example, this model’s bagging components include the lawn mower grass bag 964-04154 and the lawn mower grass bag frame 647-04271-0637.
Why it matters
Using the correct model number prevents ordering parts that look similar but do not fit (common issues include wrong wheel size, wrong belt length, or mismatched bag frame geometry).
Last updated: January 2026





