Easy starting, commercial grade backpack trimmer.

Where to buy

The RM-435SI has been specially designed for professionals who frequently undertake large-scale trimming jobs. The backpack mounted engine reduces fatigue and allows more accuracy when working on uneven terrain. The SI variant comes equipped with ECHO's i-start technology for super easy starting in all conditions.

i-start engine.

i-start engine.

The RB-430SI starts with one light pull thanks to ECHO's patented technology.

Backpack mounted engine.

Backpack mounted engine.

Designed for ultimate maneuverability. The spring support massively reduces vibration, meaning you can trim effortlessly for long periods.

Powerful engine.

Powerful engine.

The 42.7cm³ engine has been made in Japan for ultimate power and dependability.

Best Features.


Features one of ECHO’s most powerful engines.

Ease of use

Power on and get to work. Intuitive controls and features make your job a breeze.


Designed to maximise efficiency and comfort.

Product Details.

Engine displacement (cm³) 42.7
Output (kw) 1.3
Output (ps) 1.8
Dry Weight (kg) 10.8
Fuel tank capacity (l) 1.30
Fuel Consumption At Maximum Engine Power (L/h) 1.2
Carburettor Float
Drive shaft diameter (mm) 7.0
Main pipe diameter (mm) 25.0
Gear reduction ratio 1.25