Makita EM2651UH vs EM4351UH: which MM4 four-stroke?
Both use Makita's MM4 four-stroke on unmixed petrol and a bike handle. The EM2651UH is a light garden machine; the EM4351UH a professional all-day clearer.
In short:The Makita EM2651UH has a 25.4 cc MM4 four-stroke rated at 0.77 kW, a cow-horn handle, a shoulder strap, a 5.6 kg weight and 2.4–2.5 m/s² vibration. The EM4351UH is a professional model with a 43 cc MM4 rated at 1.5 kW, a bike handle, a universal guard for blade and line, a tool-less handle clamp, 8.5–8.6 kg and 2.1–2.2 m/s² vibration per UK retailers. Both run on unmixed petrol. Choose the 2651 for gardens, the 4351 for heavy clearing.
The Makita EM2651UH and EM4351UH share Makita’s MM4 four-stroke design — no fuel mixing, very low vibration — at two very different sizes.
At a glance
| Makita EM2651UH | Makita EM4351UH | |
|---|---|---|
| Engine | 25.4 cc MM4 | 43 cc MM4 |
| Power | 0.77 kW | 1.5 kW |
| Weight | 5.6 kg | 8.5–8.6 kg |
| Vibration | 2.4–2.5 m/s² | 2.1–2.2 m/s² |
| Handle | Cow-horn (bike) | Bike, tool-less clamp |
| Guard | — | Universal (blade and line) |
| Rating | 8.0 / 10 | 8.4 / 10 |
Garden vs professional
The EM2651UH is a light garden machine for grass and light growth, with a 230 mm 3-tooth blade listed by Makita. The EM4351UH is built for all-day commercial work: twice the power, a universal guard and a multi-position engine.
Weight vs workload
The EM2651UH is about 3 kg lighter. The EM4351UH’s weight is the price of its capacity; use a proper harness (best brush cutter harnesses).
Which should you buy?
For a garden or small plot, the EM2651UH. For dense growth and long working days, the EM4351UH. Both were unavailable on Amazon.co.uk in October 2026, so check Makita dealers.
Full specifications
| Makita EM2651UH | Makita EM4351UH | |
|---|---|---|
| Type | Petrol | Petrol |
| Engine / power | 25.4 cc · 4-stroke MM4 | 43 cc · 4-stroke MM4 |
| Engine | 25.4 cc, 4-stroke (MM4) | 43 cc, 4-stroke (MM4) |
| Power | 0.77 kW (1.1 hp) | 1.5 kW |
| Handle | Cow-horn (bike), shoulder strap | — |
| Vibration | 2.4–2.5 m/s² (Makita) | 2.1 m/s² line / 2.2 m/s² blade |
| Weight | 5.6 kg (Makita datasheet) | 8.5–8.6 kg (retailers) |
| Fuel | Pure petrol (no mixing) | — |
| Guard | — | Universal, for blade and nylon head |
| Best for | Regular maintenance of grass and light growth without the hassle of 2-stroke mixing. | Professionals and heavy users who want clean, low-vibration 4-stroke power without fuel mixing. |
| Our rating | 8 / 10 | 8.4 / 10 |
Strengths and drawbacks
Makita EM2651UH
- + No fuel mixing — pure petrol convenience
- + Low handle vibration (2.4–2.5 m/s²)
- + Cow-horn handle for controlled sweeps
- − Modest power for dense brush
- − Slightly heavier than a 2-stroke equivalent
- − Separate engine oil to maintain
Makita EM4351UH
- + No fuel mixing — clean 4-stroke running
- + Very low handle vibration for long days
- + Universal guard and tool-less handle clamp
- − Heavy at ~8.5 kg
- − Unavailable on Amazon.co.uk in October 2026
- − Premium price
Frequently asked questions
How much more powerful is the EM4351UH?
About twice: 1.5 kW from 43 cc against 0.77 kW from 25.4 cc. It keeps a blade turning through dense growth all day.
How much heavier is it?
About 3 kg: 8.5–8.6 kg per UK retailers against 5.6 kg for the EM2651UH per Makita.
Do both avoid fuel mixing?
Yes. Both MM4 engines are four-strokes that run on unmixed petrol, with oil in a sump.