Operation Manual

The table contains a list of all possible combina-
tions between bar and chain, indicating those
which may be used on each machine, marked with 
the symbol  “
”.
WARNING!
In consideration that the
selection, application and usage of bar and
chain are actions made solely by the user, the
latter assumes responsibility for damages of
TROUBLESHOOTING / ACCESSORIES 19
EN
9. TROUBLESHOOTING
1) The engine will not
start or will not keep
running
2) The engine starts but
is lacking in power
3) The engine runs
irregularly and lacks in 
power when revved
4) The engine gives o 
an excessive amount of 
smoke
5) No oil is released
Incorrect starting procedure
–  Dirty spark plug or incorrect distance 
between the electrodes
–  Air lter clogged
Carburetion problems
–  Air lter clogged
Carburetion problems
–  Dirty spark plug or incorrect distance 
between the electrodes
Carburetion problems
–  Incorrect composition of the fuel mixture
Carburetion problems
–  Bad quality oil
Lubrication holes are clogged
–  Follow the instructions (see chapter 6)
–  Check the spark plug (see chapter 8)
–  Clean and/or replace the lter
(see chapter 8)
–  Contact your dealer
–  Clean and/or replace the lter
(see chapter 8)
–  Contact your dealer
–  Check the spark plug (see chapter 8)
–  Contact your dealer
–  Prepare the fuel mixture according
to the instructions (see chap. 5)
–  Contact your dealer
–  Empty the tank, clean it and pipes with 
liquid detergent and change the oil
Clean
PROBLEM LIKELY CAUSE SOLUTION
any kind due to such actions. When in doubt
or if lacking knowledge of the specicity of
each bar or chain, contact your retailer or spe-
cialised gardening centre.
Use of unapproved combinations of bar and
chain can reduce the safety level and the ma-
chine’s original performances, damage the
machine and be dangerous for the operator
and other persons.
10. ACCESSORIES
Bar and chain combinations
Pitch BAR CHAIN Model
Inches
Length
Inches /
cm
Groove width
Inches / mm
Code Code
SPR 255 SPR 255 C A 305 A 305 C
3/8” 10” / 25 cm 0,050” / 1,27 mm
OREGON
100SDEA041
123900360/0
91PX040X
91P040X
123920360/0
3/8” 12” / 30 cm 0,050” / 1,27 mm
OREGON
120SDEA041
123900362/0
91PX045X
91P045X
123920362/0
1/4” 10” / 25 cm 0,050” / 1,27 mm
QIRUI AT10-50
123900361/0
E1-25AP060T
123920361/0