BOMBARDIER 1980 Shop Manual page 120

SECTION 03
SUB-SECTION 02, (ENGINES)
@@@Place a clean cloth over crankcase to prevent
clfclips from falling into crankcase then use a pointed
tool to remove circlips from piston.
Drive the gudgeon pins in or out using a suitable drive
punch and hammer.
S
CAUTION: When tapping gudgeon pin in or out
" of piston, hold piston firmly in place to eliminate
the possibilities of transmitting shock and pressure to
the connecting rod.
At assembly. place the pistons over the connecting rods
with the letters AUS (over an arrow on the piston dome)
facing the direction of the exhaust port.
Piston to wall clearance should be:
MINIMUM - MAXIMUM
0.070 - 0.200 mm
(0028 -008")
Once the circlips are installed. turn each circllp so that
the circlip break is not directly in line with piston notch.
Using very fine emery cloth, remove any burrs on piston
caused through circlip installation.
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Piston notch
(464 ENGINE TYPE). PAGE 16
Clrclip break