BOMBARDIER 1980 Shop Manual page 71

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TOP END
CLEANING
Discard all gaskets.
Clean all metal components in a non-ferrous metal
cleaner.
Scrape off carbon formation from cylinder exhaust port,
cylinder head and piston dome using a wooden spatula.
O
NOTE: The letters" AUS" (over an arrow on the
piston dome) must be visible after cleaning.
Clean the piston ring grooves with a groove cleaner tool,
or with a piece of broken ring.
DISASSEMBLY & ASSEMBLY
0 0 0Prior to washer installation, apply silicone sealant
around studs.
Torque cylinder head nuts to 22 N'm (1 6 ft-Ibs) following
illustrated sequence.
®®Because of cap nuts, cylinder head studs have to
be crewed into the cylinder so that they do not protrude
by more than 43 mm (1 ,7DD"). If it is not possible to
obtain this length, add a washer between cylinder head
and cap nut. Shorter threaded part of stud should be
screwed into cylinder.
43mmtdE:f~
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SECTION 03
SUB-SECTION 02, (ENGINES)
When reassembling the cylinders to the crankcase, it is
Important to have them properly aligned so that the
cylinder head holes will match up with the studs. A special
tool (as per illustration) (or cylinder head itself) can be
used to align the cylinders. Cross torque cylinder nuts
to 22 N'm (16 ft-Ibs).
AlIgnmg tools
no, 420 876 575
(354-454 ENGINE TYPES), PAGE 13