UMC425 Power Head
The world's lightest OHC engine, the Honda Mini 4-stroke engine requires no fuel/oil mixing, and runs at approximately half the operating cost of comparable 2-stroke engines.
A full 360° "any-side-up" operation means you can use and store the UMC425 in any position, and take advantage of the exclusive rotary-slinger lubrication system.
The carburetor is equipped with an accelerator pump for fast, easy acceleration, and an efficient port configuration and large diameter valves maximise power output.
Fuel Efficient, High Output Operation.
Lighter, more rigid valve train.
Powered by Honda's famous 25cc 4-Stroke Engine, this VersaTool powerhead already comes standard on most of Honda's range of handheld power equipment
Suitable for the residential user, this powerhead delivers the 'starts-first-time every-time' reliability that Honda is known for, and offers superior performance no matter what attachment is connected.
A lightweight and ergonomic design, paired with the power that comes standard with a Honda, results in a power source that you can rely on day in, day out.
VERSATOOL COMPATIBLE Yes
TYPE 4-stroke, overhead cam, single-cylinder, horizontal shaft
BORE & STROKE 35 x 26 mm (1.4 x 1.0 in)
DISPLACEMENT 25cm3 (1.5 cu in)
COMPRESSION RATIO 8.0:1
NET POWER 0.72kW (1.0HP) at 7,000 rpm
MAXIMUM NET TORQUE 1.0 Nm (0.74 lbs ft) at 5,000 rpm
IGNITION SYSTEM Transistorised magneto ignition
STARTING SYSTEM Recoil Starter
COOLING SYSTEM Forced-air
PTO SHAFT ROTATION Counter-clockwise (from P.T.O. side)
FUEL CONSUMPTION AT RATED POWER 0.54 L/h at 7,000 rpm
RECOMMENDED FUEL Unleaded
LUBRICATION SYSTEM Oil Mist
OIL CAPACITY 0.08l
FUEL TANK CAPACITY 0.55l
DIMENSIONS 192mm x 221mm x 230mm
DRY WEIGHT 2.78kg (w/o clutch)
OTHER SPECS Infinite Operating Angles