1982 Ski-Doo Shop Manual, Page 21Get this manual
f!' SECTION 02 ENGINE SUB-SECTION 01 (247 ENGINE TYPE)
CLEANING
Discard all gasketsClean all metal components in non-ferrous metal cleanerScrape off carbon formation from cylinder exhaust port, cylinder head and piston dome using wooden spatula
ASSEMBLY
G) 'A assembly, place the piston over the connecting rod with the letters" AU S" (over an arrow on the piston domel facing in direction of the exhaust port
NOTE: The letters "AUS" (over an arrow on the piston dome) must be visible after cleaningEXHAUST
Clean the piston ring grooves with groove cleaner tool, or with piece of broken ring
DISASSEMBL Y
G)'G) (3)Place clean cloth over crankcase to prevent circlips from falling into crankcase Use pointed tool to remove circlips from piston_ CAUTION: When tapping out gudgeon pins, hold piston firmly in place to eliminate the possibilities of transmitting shock and pressure to the connecting rod(3) To minimize the effect of acceleration forces on circlip, install each circlip so the circlip break is at o'clock as illustratedRemove any burrs on piston caused through circlip installation with very fine emery cloth