ACS 46 (18")

Petrol chainsaw

Strong and performing 45cm chainsaw, equipped with a 45 cc engine. Automatic oil pump enhances performance.
  • Strong and performing chainsaw, perfect for very demanding works
  • Performing 45 cc petrol engine
  • Robust 18" / 45 cm bar
  • Automatic and adjustable oil pump, enhancing performance
  • Chain type .325'' .058'' (21BPX0-72X)
Tax Included

Product details and specs

The Alpina ACS 46 petrol-powered chainsaw is a performing and easy-to-maintain tool, that will be your best partner for domestic wood cutting. The 45cm cutting bar and the 45 cc petrol engine ensure great performance. The automatic oil pump enhances cutting results.


For domestic wood cutting
Thanks to the 45 cm bar and the 45 cc engine, this chainsaw is just perfect for any domestic wood cutting.
Enhanced performance
Thanks to the automatic oil pump, the lubrication of the chain will always be at its best.
High-quality chain
Thanks to the resistant and strong chain and components, this machine will prove incredibly strong and reliable through time.

What's in the box

ACS 46 (18")
ACS 46 (18")
Petrol chainsaw
  • lensScrewdriver
  • lensChain round file
  • lensSpark plug key

Technical specs

General info
1.8 kW
Power source
Petrol 2-stroke
45.02 cm³
Engine rotation speed
11000 rpm
Maximum engine speed
11000 rpm
Idling speed (+/- 100)
3200 rpm
Easy start recoil
Manual with automatic return
Fuel tank capacity
0.55 l
Carburettor type
Butterfly valve
Ignition coil type
Air filter type
Compressed fiber
Cutting system
Bar type
Sprocket nose
Bar length
45 cm
Bar length (inches)
18 in
Chain type
.325" .058" (21BPX-72X)
Chain speed
21 m/s
Chain brake
Manual and inertial
Chain oil tank capacity
0.26 l
Chain oil pump
Automatic adjustable
Chain tensioning system
Side screw tensioning
Handle type
Rear handle
Vibe Control System (VCS)
Soft grip handle
Tools kit
Included tools kit
Screwdriver, chain round file, spark plug key
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 front handle (m/s2)
Vibration level rear handle (m/s2)
Overall dimensions
Pack weight
8.8 kg
Product weight
7.68 kg
Product weight without bar and chain
6.525 kg
Product length
850 mm
Product width
240 mm
Product height
285 mm


What kind of cutting operations can be carried out with this Alpina petrol chainsaw?
This Alpina chainsaw is suitable for pruning branches in trees and shrubs, but also for domestic wood cutting operations, such as cutting logs for stoves and fireplaces.
How is chain lubrication done?
The lubrication of the chain is automatic but can be adjusted thanks to a special screw to modulate the use according to the type of wood to be cut, the type of work, the surrounding temperature and the type of oil used.
How is the chain tensioned?
The chainsaw is equipped with a side chain tensioner which facilitates the tensioning operation.
What kind of protective gear should I use?
Trousers, jackets and gloves, all made out of cut-resistant material, safety shoes and a protective helmet with sound attenuating ear-muffs and a protective visor are ideal equipment for cutting wood. Among the parts and accessories indicated for this model, there is a wide selection of products which can be used for suitable gear. We recommend that you exercise the utmost care as well as wearing appropriate clothing when using this type of machine, and that you bear in mind the importance of consulting the manual when you make your choice.
How often should the chain be replaced?
The chain will wear down, and how quickly this happens will depends on the frequency and intensity of use, as well as the type of wood cut.
When the cutting performance remains poor despite sharpening, you will need to replace the chain. You will find compatible replacements among the parts and accessories on this page.
Which replacement chain should I use for this petrol chainsaw?
We recommend that you replace the original with a new chain. Each chainsaw model can fit specific types of chains, depending on the characteristics of the machine and the bar length. To know which type you should use with this model, we recommend that you go to the parts and accessories section on the website, or else refer to the manual.
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