Honda BF40D Manuel D'utilisation page 206

5) Install the top ring and the second ring in the ring grooves
in the piston with the marker marks toward up.
Install the oil ring in the ring groove.
1
• Clean the ring grooves thoroughly before installing the
2
piston rings.
• Install the piston rings with care not to break them.
Take care not to score or scratch the piston.
3
• Do not confuse the top ring and the second ring.
• To install the oil rings, install the spacer first, then install
4
the side rails.
5
6
7
8
9
10
11
12
6) After installing the piston rings, turn each ring by hand to
13
check for smooth movement.
14
7) Stagger the piston ring end gaps as shown.
15
• Do not align with the piston pin, and avoid the direction
that makes a right angle with the piston pin.
16 Stagger the end gaps 120
17
18
19
20
10-22
o
apart right and left.
206
[2]
TOP RING
[1]
MAKER MARK
[5]
OIL RING
[6]
SIDE RAIL
(2)
[7]
SPACER
[1]
TOP RING
o
120
o
120
o
[7]
120
SECOND
RING
[6]
OIL
RING
[4] 20 mm (0.8 in) min. [4] 20 mm (0.8 in) min.
[1]
MAKER MARK
[3]
SECOND
RING
[4]
PISTON
[2]
TOP RING
[3]
SECOND RING
[5]
OIL RING
[2]
SIDE
RAIL (2)
[3]
SPACER
[5]
PISTON