AL4 51 SHQ

Petrol lawn mower

This 145cc/51cm petrol lawn mower employs premium Honda power and offers four-in-one mowing as standard. Comes with a 60-litre collector.
  • Capable of bagging, mulching, rear-discharge and side-discharge
  • Powered by a premium Honda OHV engine
  • Sizeable 51cm cut
  • Self-propelled – cover slopes and rough ground with ease
  • Strong and durable steel deck
Tax Included

Product details and specs

Powerful, feature-packed and easy to operate, the high-specification Alpina AL4 51 SHQ will make maintaining your lawn more of a pleasure than a chore!
Producing an impressive 4.2hp is a high-performance 145cc Honda four-stroke OHV engine offering class-leading power and torque; and featuring a transistorised ignition for ultra-dependable starting.
The AL4 51 SHQ is a versatile four-in-one machine – depending on the conditions and your preferred finish, you can choose to either collect, mulch, side-discharge or rear-discharge grass clippings.
It benefits from hassle-free single-point cutting-height adjustment through the six stages provided; and it’s fitted with extra-large 280mm rear-wheels that ensure you’ll have no problems manoeuvring in longer grass.
With its large-capacity grassbox (60 litres) and expansive 51cm cutting-width, the AL4 51 SHQ will cover a substantial area in impressively quick time.
A handy ‘collector full’ indicator helps to avoid chute clogging by alerting you when the grassbox is at capacity; while a self-propelled drive means rough grass and slopes can be traversed with minimal effort expended.
Other stand-out features include a steel deck for solid impact-resistance; and a height-adjustable handlebar that combines with an ergonomically-shaped grip to confer excellent operator-comfort.


Power and ease of use
Powerful, reliable and easy-starting petrol engine
Perfect for large lawns
With its 51cm cut and 60-litre collection capacity.

What's in the box

AL4 51 SHQ
AL4 51 SHQ
Petrol lawn mower
  • lensGrass bag
  • lensMulching plug
  • lensSide deflector
  • lensPin for rear discharge

Technical specs

General info
2.75 kW
Power source
Engine Brand
Engine model
GCVx145 OHV Autochoke
145 cm³
Engine rotation speed
2900 rpm
RPM control
Fixed rpm
Fuel tank capacity
0.95 l
Engine Oil tank capacity
0.4 l
Suggested working area
1800 ㎡
Cutting system
4 in 1 cutting system
Cutting width
51 cm
Deck material
Cutting height adjustment
Cutting height positions
6 positions
Cutting height range
22 - 80 mm
Drive system
Rear-wheel drive
Speed forward
3.7 Km/h
Collector capacity
60 l
Handlebar type
200/280 grooved wheels on bushings
Front handle
Adjustable handlebar
Foldable handlebar
Collector type
Plastic with warn
Vibration and noise data
Guaranteed sound power level (LwA) - dB(A)
Measured sound power level dB(A)
Measured sound pressure level at operator ear dB(A)
Vibration level hand (m/s2)
Overall dimensions
Pack weight
35.1 kg
Product length
1595 mm
Product width
565 mm
Product height
1225 mm
Product weight
32 kg


What features does the Honda engine have?
The engine of this lawnmower has a displacement of 166 cc. The auto-choke system allows for easier starting.
How does the mower start and where are the controls located?
This lawnmower starts to recoil. The yellow lever on the handlebar allows you to activate the blade.
How is the cutting height adjusted on this petrol lawn mower?
For this petrol lawnmower, the cutting height adjustment is carried out centrally thanks to a lever located near the wheels.
How can this petrol lawn mower cut the grass?
This petrol mower is capable of bagging, mulching, rear-discharge and side-discharge

Reach Information

Information on Article 33 of REACH Regulation concerning STIGA Group products. Discover more

Reach Information

AL4 51 SHQ
181003134/0 GEARBOX G.T. CP1 Lead 7439-92-1
Component 1 Component description 1 Substance/s CAS number
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