Piston Ring Assembly; Piston With Cylinder Assembly - Husqvarna TC449 Workshop Manual

H01931
H01835
1 edition (08-2010) _Rev. 11-2010
st
ENGINE DISASSEMBLY/REASSEMBLY

Piston ring assembly

• Fit piston ring and scraper ring inside annular grooves, offset by 180°.
Warning
Offset garter spring port by approx. 180° compared to scraper ring port. The
"TOP" wording shall be pointing up.
Technical specifications
Piston ring assembly
direction
• Assemble the following parts using a gripper for piston rings:
- Lower scraper ring spring (3)
- Lower scraper ring (2) with the "EK" wording pointing up
- Upper piston ring (1) with the "TOP" wording pointing up

Piston with cylinder assembly

• Position piston ring and scraper ring inside annular grooves, offset by 180°.
Warning
Offset garter spring port by approx. 180° compared to scraper ring port. The
"TOP" wording shall be pointing up.
Technical specifications
Piston ring assembly
direction
• Grease piston ring with piston sides, and insert piston rod inside cylinder.
Consumables
Castrol GPS SAE 10W-40
• Apply a 57-125 mm tightening belt onto piston rings, then tighten belt.
• Assemble piston (1) while 57-125 mm tightening belt is still inside cylinder.
F1.57
"Top" mark pointing
up
"Top" mark pointing
up
Engine oil