Makita EM2651UH vs EM4351UH: petrol brush cutter comparison

The Makita EM2651UH and Makita EM4351UH share the same core idea — a 4-stroke MM4 engine that runs on pure petrol, so there’s no 2-stroke oil to mix in. Beyond that, they’re built for different jobs: one is a light, homeowner-friendly machine for grass and light growth, the other a genuine professional tool sized for long days and tougher ground.

At a glance

	Makita EM2651UH	Makita EM4351UH
Engine	25.4 cc, 4-stroke MM4	43 cc, 4-stroke MM4 (+69% displacement)
Power	~0.77 kW	1.5 kW (2.0 hp)
Weight	~5.5 kg (lighter)	~8.5 kg
Vibration	Not a headline feature	Very low, 1.7–2.2 m/s² (class-leading)
Fuel	Pure petrol, no mixing	Pure petrol, no mixing
User level	Homeowner	Professional
Best for	Grass, light growth, regular maintenance	Heavy, all-day clearing and dense growth
Price position	Entry-to-mid	Premium, professional-tier

Engine and power: two different classes

The gap here isn’t subtle. The EM2651UH’s 25.4 cc engine and roughly 0.77 kW output are sized for grass and light growth — plenty for a normal garden, but with little reserve left over. The EM4351UH steps up to 43 cc and 1.5 kW (2.0 hp), around 69% more displacement, giving it the torque to keep a metal blade turning through thicker, woodier growth without bogging down. If your land is mostly lawn edges and the odd overgrown patch, the smaller engine is more than enough; if you’re cutting scrub or dense brambles as a routine job, the extra size earns its place.

Weight, vibration and all-day comfort

At around 5.5 kg, the EM2651UH is light enough to run with a simple shoulder strap and manage without fatigue over a typical maintenance session. The EM4351UH is a heavier machine at roughly 8.5 kg, and it’s designed around a full harness rather than a light strap — that’s expected for its class, since a bigger engine and more cutting capability come with more mass to carry. What sets the EM4351UH apart is its vibration figure: at 1.7–2.2 m/s², it’s genuinely class-leading for a petrol brush cutter, which matters enormously if you’re running the machine for hours rather than minutes. The EM2651UH doesn’t compete on that front, but it doesn’t need to — for shorter sessions, vibration fatigue simply isn’t the same concern.

No fuel mixing, either way

This is where the two machines agree rather than differ. Both use Makita’s MM4 4-stroke engine, meaning both run on straight petrol with a separate engine oil reservoir instead of a 2-stroke oil-in-fuel mix. That means quieter, cleaner running and none of the hassle of measuring oil into every tank — an advantage that carries across the whole size range, not just the bigger model. The trade-off, common to both, is a little extra weight and one more fluid to check compared with a straight 2-stroke.

Handle and control

Both models use Makita’s double-handle setup rather than a single loop handle, which is standard across this size range once a machine is expected to run a blade. The practical difference in use comes down to what’s attached to that handle: the EM2651UH pairs it with a lighter strap suited to shorter sessions, while the EM4351UH is set up with a full harness to support its extra weight and cutting capability over a full working day.

Price and value

The EM2651UH sits at the entry-to-mid point of Makita’s petrol range — a sensible price for a homeowner who wants mix-free convenience without paying for professional-grade capacity they won’t use. The EM4351UH is a genuine step up in price, positioned as a premium, professional-tier machine. That extra cost buys real torque, low vibration engineering, and durability built for daily commercial use — money well spent if you’re cutting for a living or managing serious land, but overkill for maintaining a normal garden.

Choose the EM2651UH if…

• Your land is grass and light growth, with nothing routinely dense or woody
• You want the lighter, easier-to-handle machine of the two
• You value mix-free running but don’t need professional-grade capacity
• Budget matters and you’d rather not pay for capability you won’t use

Choose the EM4351UH if…

• You cut for hours at a time, professionally or on a large property
• You regularly face denser growth, brambles or scrub that needs real torque
• Low vibration over long sessions is a genuine priority for you
• You’re comfortable with a heavier, harness-supported professional machine

Which should you buy?

For most homeowners, the Makita EM2651UH is the right call — it delivers the mix-free convenience of Makita’s MM4 engine in a lighter, more affordable package that comfortably handles grass and light growth. The Makita EM4351UH only makes sense once your workload genuinely demands it: long professional days, denser growth, or land large enough that the extra torque and low vibration stop being a luxury and start being a necessity. Buying the EM4351UH for a small tidy garden is an expensive machine doing a job it was never sized for; buying the EM2651UH for daily professional clearing will leave you underpowered and reaching for something bigger.