Piston Disassembly; Cylinder Check - Husqvarna TC 449 2011 I.E. Workshop Manual

H01754
H01895
ENGINE DISASSEMBLY/REASSEMBLY
TC 449 2011/2012 I.E.
TE 449 - 511 2011/2012 I.E.
TXC 449 - 511 2011/2012 I.E.
SMR 449 2011 I.E.
SMR 511 2011/2012 I.E.

Piston disassembly

• Watch stop rings correct position: ring opening shall be pointing up (arrow).
• Disassemble the following parts:
- Left and right stop rings (1).
- Piston pin (2)
- Piston (3)

Cylinder check

Check
• Check cylinder liner and sealing surface for damages.
• Measure bore using an inside micrometer gauge in three points (A, B, C).
Technical specifications
Cylinder bore diameter
Tolerance group 1
Cylinder bore diameter
Tolerance group 2
Result: Damaged cylinder or outside tolerance values
Action:
• Replace cylinder.
New, 40 mm from
upper edge
New, 40 mm from
upper edge
F1.55
450 cc
+0.012
98.000 mm
- 0
480 cc
+0.012
101.000 mm
- 0
450 cc
+0.012
98.012 mm
- 0
480 cc
+0.012
101.012 mm
- 0
Workshop Manual Ed. 03-2012