TOHATSU BFT115A Service Manual page 472

CYLINDER BLOCK
Stagger the piston ring end gaps as shown (top ring)
(1), second ring (2), side rail (top side) (3), spacer (4),
and side rail (skirt side) (5).
Do not align with the piston pin, and avoid the direction
that makes a right angle with the piston pin.
CYLINDER BLOCK/CRANKSHAFT
ASSEMBLY
Apply engine oil to the new O-ring (1) and install it to the
oil jet orifice (2).
Install the oil jet orifice to the cylinder block.
15-24
(1)
(2)
(3)
(4)
(5)
APPROX. 10°
SIDE RAIL END
APPROX. 15°
GAP (TOP SIDE)
(FIXED POSITION)
APPROX. 120°
PISTON
TOP RING
PIN
END GAP
(1)
(2)
SPACER
RING
END GAP
SIDE RAIL
END GAP
(SKIRT SIDE)
APPROX. 120°
SECOND RING
END GAP