Craftsman M105 21-in 140cc Gas Push Mower Review (2026)
By Nate Sawyer, Editor · Updated July 2026
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- Small yards
- Budget
- Push
Based on specs and owner feedback, this 21-inch Craftsman push mower runs a 140cc Briggs & Stratton engine with auto-choke starting, one of the cheapest full-size gas decks for flat quarter-acre yards. Drawbacks: push-only tires you on slopes or thick grass, the 140cc engine has little headroom in tall turf, and gas upkeep remains.
Pros
- Auto-choke 140cc engine starts without priming or choke fiddling on the spec sheet
- Low-$200s price makes it one of the cheaper ways into a full-size 21-in gas deck
- 3-in-1 deck and 6 height positions cover normal suburban mowing needs
Cons
- Push-only design is tiring on any slope or in thick grass
- Smaller 140cc engine has less headroom than 160cc+ mowers for tall, wet turf
- Still carries gas maintenance and storage chores that battery push mowers avoid
Specifications
| Power | Gas, 140cc Briggs & Stratton engine |
|---|---|
| Deck | 21 in |
| Drive | Push (not self-propelled) |
| Runtime | Refuel to run; no battery limit |
| Cutting height | 1.25-3.75 in, 6 positions |
| Discharge | 3-in-1 bag / mulch / side discharge |
| Best for | Up to ~1/4 acre |
Frequently Asked Questions
- Is a push mower workable on a sloped yard?
- It is tiring. Push-only means you supply all the drive, which gets old on any real slope or in thick grass. On a flat quarter-acre it is fine and saves the cost of a self-propelled unit.
- Is 140cc enough engine?
- For normal suburban mowing, yes. It has less headroom than a 160cc+ mower when the grass is tall or wet, which is when a small engine bogs. The auto-choke start does remove the priming and choke fiddling.
- What does the 3-in-1 deck do?
- It bags, mulches or side-discharges, with six cutting heights from 1.25 to 3.75 in. That covers the normal range of suburban lawn conditions without buying extra attachments.