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14. Troubleshooting
Problem
Unit wonʼt start or starts but
will not run.
Unit starts, but engine has low
power.
Engine hesitates.
No power under load.
Runs erratically.
Smokes excessively.
Poor performance when
operated
Engine dies
Insufficient chain lubrication
(the cutter rail and chain get
hot)
15. Admitted saw chain and chain bar combination
Saw chain
325.058-76BL
Guide bar
BE20-76-5812P
Saw chain
Oregon 21BPX078X
Oregon 208PXBK095
Guide bar
(7910100718)
52 | GB
Probable cause
Incorrect starting procedures.
Incorrect carburetor mixture
adjustment setting.
Fouled spark plug.
Fuel filter plugged.
Dirty air filter.
Incorrect carburetor mixture
adjustment setting.
Incorrect carburetor mixture
adjustment setting.
Incorrectly gapped spark plug.
Incorrect carburetor mixture
adjustment setting.
Incorrect fuel mixture.
Blunt chain
Loose chain
Empty petrol tank
Fuel filter in the wrong position in
the tank
Empty oil tank for the chain
Oil lubrication openings moved
www.scheppach.com
Corrective Action
Follow instructions in the User Manual.
Have carburetor adjusted by an Authorized
Service Center.
Clean / gap or replace plug.
Replace fuel filter.
Remove, clean and reinstall filter.
Have carburetor adjusted by an Authorized
Service Center.
Have carburetor adjusted by an Authorized
Service Center.
Clean / gap or replace plug.
Have carburetor adjusted by an Authorized
Service Center.
Use properly mixed fuel (40:1 mixture).
Sharpen or replace the chain
Tension the chain
Fill up the petrol tank
Completely fill the petrol tank or or re-position
the fuel filter in the petrol tank
Top up the oil tank for the chain
Clean the oil lubrication hole in the cutter bar
Clean the groove in the cutter bar
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