Assembling Piston And Connecting Rod - TOHATSU MFS 9.9 Owner's Manual

Power Unit

40) Assembling Piston and Connecting Rod

Install connecting rod 2, piston pin 3, and piston pin clip 4
1.
to piston 1.
· Point "3RO-UP" mark a of connecting rod and
"UP" mark b of piston at the same direction.
· Be sure to use new piston pin clip, and place
clip gap away from piston pin groove c as
shown.
· Be sure that individual connecting rod cap is
installed to their original connecting rod.
Put expander 5 (#4) into oil ring groove, and check that
2.
ring ends meet correctly as shown.
While holding expander 5 (#4) gap with thumb, put upper
3.
side rail (#3) end into the groove so that the gap is away from
gap of expander 5 (#4) to the left by 90° degrees.
4. In similar way, put lower side rail (#5) into the groove so that
the gap is away from gap of expander 5 (#4) to the right by
90° degrees.
5. Install second ring (#2 taper) and top ring (#1) to piston.
Install the rings so that their side with manufacturer's
identification de (T) faces upward.
6. Bring their gaps are away from each other as shown.
Be careful not to scratch piston surface
and damage rings.
· Install piston rings so that their gaps are away
also from thrust direction of piston and
direction piston pin.
· After installing piston rings, check that they
move smoothly.
5-50
CAUTION
4
3
4st
4st OIL
2
a
4
Do not reuse.
e
#
5
#
4
#
3
U P
b
1
4
c
5
5
45°
45°
#2
#3
#4
UP
#5 #1
#
2
d
#
1
4st 9.9/15/20 2008