Jonsered 2095 Workshop Manual

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7
Cylinder and piston
Procedure:
In severe cases - replace the cylinder.
Repair the thread with Heli-Coil.
Rub the damaged part with fine emery cloth to remove
adhered aluminium.
With deeper seizure scratches the cylinder and piston should
be replaced.
Replace cylinder and piston.
Rub the damaged part carefully with a fine file or emery cloth.
Before the piston is fitted the cylinder should be rubbed as
above. With deeper scratches the piston and where necessary
also the cylinder should be replaced.
Carefully loosen the piston ring and clean the groove very
carefully before replacing. Check the wear on the piston ring
by placing it in the lower part of the cylinder.
Service tips
Defect:
Broken cooling fins, damaged threads or broken screw at
exhaust port.
Seizure marks in the cylinder bore (especially at the exhaust
port).
The surface lining in the cylinder bore is worn (primarily at
the head of the cylinder).
The piston displays seizure scratches.
The piston ring is stucked in its groove.
Wear tolerances
Cylinder bore
Piston ring gap
The surface finish in worn away
revealing the aluminium.
Max. 1.0 mm with the piston ring
pushed into the lower part of the
cylinder.
Max. 0.15 mm. Clean the groove
carefully before checking the mea-
surement.
Max. 1.6 mm. Clean the groove
carefully before checking the mea-
surement.
Piston ring groove
Piston ring play

Jonsered 2095 Specifications

General

Brand	Jonsered
Model	2095
Category	Chainsaw
Language	English