Base Gasket Information - BOMBARDIER 1996 Ski-doo MX Z440 Handbook

BASE GASKET INFORMATION

MODELS : All 1990 to 1992 SAFARI LC / LCE / GLX and all 1989 to 1993 FORMULA Series.
Serial Nos : All Liquid Cooled Engines from 1989 to 1993.
Subject : A) Cylinder Tightening Torque
B) Cylinder/ Base Gasket
C) Cylinder / Base Gasket on 1991 FORMULA PLUS and 1990 FORMULA MACH 1
Models
A) On engines with screw-mounted cylinders, grease must be applied under screw head prior to
installation. Tightening torque has been increased to 28-30 Nom (21-22 Ibfoft). This is necessary
to ensure good sealing.
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NOTE : On engines with stud-mounted cylinders, the tightening torque remains
20-22 Nom (15-16 Ibf"ft).
B) A new cylinder/ base gasket has been introduced with increased strength and sealing ability.
Refer to the chart on next page.
CAUTION : Proper gasket selection is very important to avoid compression ratio change
which can lead to engine severe damage.
C) On Formula MACH 11990 and PLUS 1991 with the 1.0 mm thick gasket (P/N 420931189 and
P / N 420931188 respectively), a coat of paste gasket (P/ N 4137027 00) (Loctite 515) must be
applied to cylinder and base sealing surface. Primer N (P/ N 4137076 00) should be applied to
sealing surface in order to reduce fixture curing time from 1 hour to 15 minutes (full curing time
without primer N is 12 hours and 2 hours with primer N). Torque cylinders to the new higher
torque.
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NOTE : This is a service tip, no warranty applies.
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