PISTON AND CYLINDER
Cleaning and Inspection
Clean all parts, scrape off any gasket
residue remove carbon deposits from the
following areas:
1.
2.
3.
4.
The piston crown.
The top of the cylinder bore.
The cylinder exhaust port.
The decompression valve channel.
Check the following:
1.
That the cylinder’s surface coating is not
worn, especially the upper part of the
cylinder.
2.
3.
That the cylinder is free of score marks.
That the piston is free of score marks.
See ”Faults and causes” on the next page.
Small scratches can be polished off using
fine emery paper.
4.
5.
That the piston ring is not stuck into its
groove.
Max 1 mm
Measure the piston ring wear by placing it
in the bottom of the cylinder bore and
measuring the gap and which should not
exceed 1 mm.
6.
7.
That the needle bearing is undamaged.
That the intake manifold is undamaged.
Pressure test the decompression valve as
follows:
1.
Connect the tool 502 50 38-01 to the
decompression valve
2.
3.
4.
Pump up the pressure to 80 kPa (0.8 bar).
Wait 30 seconds.
The pressure should not drop below 60 kPa
(0.6 bar).
English –
109
| Categories | Chainsaw Manuals, Husqvarna Chainsaw Manuals |
|---|---|
| Tags | Husqvarna 242XP, Husqvarna 246, Husqvarna 254XP, Husqvarna 257, Husqvarna 262XP, Husqvarna 268, Husqvarna 268K, Husqvarna 272K, Husqvarna 272S, Husqvarna 272XP, Husqvarna 281XP, Husqvarna 288XP, Husqvarna 3120XP, Husqvarna 36, Husqvarna 394XP, Husqvarna 40, Husqvarna 41, Husqvarna 42, Husqvarna 45, Husqvarna 51, Husqvarna 55, Husqvarna 61 |
| Model Year | 1997, 1998, 1999, 2000, 2001, 2002 |
| Download File |
|
| Document Type | Operator's Manual |
| Language | English |
| Product Brand | Husqvarna, Chainsaw |
| Document File Type | |
| Publisher | husqvarna.com |
| Wikipedia's Page | Husqvarna |
| Copyright | Attribution Non-commercial |
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