Berlan BMS520A User Manual Download Page 3

TECHNICAL SPECIFICATIONS 

Page 10 

TROUBLE  SHOOTING 

Problem

 

Cause

 

Remedy

 

Engine does not 

start or cuts off 

again immedi-

ately

 

Polluted or defective spark 

plug

 

Clogged petrol filter

 

Wrongly adjusted carburettor

 

Misaligned spark plug clear-

ance

 

 

Clean or replace spark plug

 

Clean or replace petrol filter

 

Adjust carburettor correctly

 

Engine is run-

ning but does 

not have any 

power

 

Clogged air filter

 

Incorrect position of choke 

lever

 

Polluted silencer

 

Wrongly adjusted carburettor

 

Clean or replace air filter

 

Change lever position

 

Replace or clean silencer

 

Spluttering or 

erratic 

running engine

 

Wrongly adjusted carburettor

 

Adjust carburettor

 

No power under 

load

 

Spark plug defective, polluted 

or incorrectly adjusted

 

Incorrect petrol mix

 

Clean, adjust or replace spark 

plug

 

Strongly smok-

ing exhaust pipe

 

Incorrect petrol mix

 

Discharge tank  and use petrol 

mixture  25:1 

 

Cutting tools 

turning at idle 

running  

Idle running speed too high 

Defective clutch 

Defective main shaft 

Adjust idle running speed 

replace clutch 

Replace main shaft 

Model  

BMS520A 

Engine 

 2-stroke petrol engine, 1 cylinder, air-cooled 

Displacement 

 51.7 cm³ 

Maximum power 

 2.2 KW / 3,0 HP at 7500 turns/min 

Petrol 

Unleaded fuel mixed 1:25 

Maximum idle running speed 

 3000 turns/min 

Tank capacity 

 1200 ml 

Maximum cutting circle 

 430 mm 

Sound pressure level (Lpa) 

 108 dB (A) 

Sound power level( Lwa) 

 110 dB (A) 

Dimensions 

 1830 mm x 610 mm x 420 mm 

Weight 

 7.5 kg 

Page 3 

• 

Wipe away all spilled petrol away from 
tank before starting brush cutter. 

 

Before getting started always check: 

• 

Tightness of fuel system, proper condition 
of  all safety devices  and cutting devices, 
fast seating of all screws. 

• 

Make sure that all bolts and other fasten-
ing elements are correctly tightened and 
none is missing. 

 

Cutter: 

• 

Cutter is very sharp. Please be carefully 
with it. 

• 

To mount cutter correctly please read 
instructions given on it in this user manual. 

• 

Observe! Fastening of cutting blade is a 
left turning thread! 

  

Adjusting cutting height: 

• 

Put on carrying strap.  

• 

Hook your device.  

• 

Adjust cutting and working position on 
carrying strap by using strap adjuster. 

• 

To find the perfect position for yourself  do 
a few swings with device without engine 
running. 

• 

Never carry out following operations us-
ing brush cutter, As those can cause bad 
injuries or damage machine: 

 
-chaffing of hedges and branches 
-Cleaning pavements 
-evening unevenness of ground  
- removing molehills 
- for operating other gardening devices 
 

• 

This device is especially designed for 
private usage and  is not suitable for 
application in hand craft or commercial 
companies. 

 

INTENDED USE  

• 

Using this brush cutter only cut lawn and 
grass land. For cutting bushes and 
branches only use saw tooth blade. 

• 

All other applications can result in bad 
injuries of operator or damage brush cut-
ter. 

 
 

GENERAL SAFETY REGULATIONS 

• 

Exhaust fumes are toxic. Never operate 

this device indoors.  

• 

Petrol is easily inflammable. Stop engine 

before refuelling petrol. 

• 

Never smoke while refuelling or carrying 

out maintenance operations. Pay atten-
tion to nit spilling fuel. 

• 

Device may not be exposed  to perma-

nent dampness and dust. 

• 

Do not remove any of the protective cov-

ers and do never touch moving or hot 
parts.  

• 

Repair and adjusting operations may only 

be carried out according to the given 
instructions in maintenance chart.  

• 

Basic settings on engine as well as rotary 

speed may not be modified unauthorised. 

• 

Start machine on an even, secure place. 

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