Cleaning, Inspection; Analysis And Procedure - Jonsered 2036 Workshop Manual

New piston. Inlet side.
Cylinder and piston
Fit the other parts in the reverse order to
dismantling.

Cleaning, inspection

The different parts are cleaned after dismantling:
1. Scrape off soot deposits on the piston head.
2. Scrape off soot deposits in the cylinder's combustion chamber.
3. Scrape off soot deposits in the cylinder's exhaust channel.
NOTE!
Scrape carefully with an object which is not too sharp so that the soft aluminium parts
are not damaged.
4. Clean the decompression passage in the cylinder wall.
5. Wash all parts clean.
6. Inspect the different parts for damage and wear.
7. Check the adapter and inlet pipe for cracking and to see if leakage has occurred,
etc.
See also the chapter "Analysis and procedure".
Check the piston and cylinder for seizing damage and wear.
See also the chapter "Analysis and procedure".
Check the piston ring for damage or fracture.
See also the chapter "Analysis and procedure".
Check the piston bolt.
– If it shows signs of bluing it should be replaced.
– If it runs too easily in the piston both the piston and piston bolt should be replaced.
Check the needle bearing. If it is discoloured or damaged it should be replaced.
Check the circlips. If they show signs of cracking or are discoloured they should be
replaced.
New piston. Exhaust side.
Fit the other parts in the reverse order to
dismantling.
Mod. 2077/2083
Observe care when fitting the inlet pipe
so that it is not damaged. Lubricate with
oil so that it will slide more easily on the
induction sleeve on the cylinder.
Tighten the clip and check that the
connection is tight.
Tighten the cylinder screws.
Tightening torque: 10-12 Nm.
Analysis and
procedures
The two adjacent illustrations show what
a new piston looks like, on the inlet side
and on the exhaust side. Note that the
milling lines from manufacturing are
clearly visible.
Use these illustrations as reference for
the evaluation of wear and damage.
Experience shows that piston or cylinder
malfunction as a result of manufacturing
faults are unusual.
There are other reasons which dominate
instead, as can be seen from the following.
Note the reasons for the malfunction,
repair the damage and take the necessary
corrective action to prevent repetition.
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