Piston Rings; Piston Rings/Cylinder Clearance - Husqvarna TE 250 Workshop Manual

ENGINE OVERHAULING

Piston rings

The piston rings should not show signs of excessive wear or scoring.
Spacer pistons are supplied complete with rings and gudgeon pins.

Piston rings/cylinder clearance

Introduce the ring into the lower part of the cylinder. (i.e. where there is least
wear), ensure that the ring is squared up and then check the ring end gap.
Piston rings/cylinder clearance
PISTON RING NOMINAL CLEARANCE (H)
"A" TE, TC, TXC 250: 0,20÷0,35 mm
"A" TE-SMR 450, TC, TXC 510: 0,25÷0,40 mm
"A" TE-SMR 510: 0,20÷0,45 mm
"B" TE-SMR 450: 0,40÷0,55 mm
"B" TE-SMR 510: 0,20÷0,45 mm
"C" TE, TC, TXC 250: 0,20÷0,70 mm
"C" TE-SMR 450; TC, TXC 510: 0,20÷0,70 mm
"C" TE-SMR 510: 0,10÷0,20 mm
G.14
(0.00787÷0.0138 in.)
(0.0094÷0.00157 in.)
(0.00787÷0.0177 in.)
(0.00157÷0.0216 in.)
(0.00787÷0.0177 in.)
(0.00787÷0.0275 in.)
(0.00787÷0.0275 in.)
(0.00394÷0.00787 in.)
Part. N. 8000 B0148 (02-2008)
WEAR LIMIT
0,5 mm
(0.0197 in.)
0,7 mm
(0.027 in.)
0,7 mm
(0.027 in.)
1 mm
(0.0394 in.)
0,7 mm
(0.027 in.)
1,2 mm
(0.047 in.)
1,2 mm
(0.047 in.)
0,35 mm
(0.014 in.)