AD Boivin 2002 Snow Hawk, Service Manual

Page: 67 / 173

ENGINE / CYLINDERS AND CYLINDER HEADS 7 - 17
Tighten the nuts to 22 N-m (16 lbf-ft) in the order indicated in the
illustration.
To install the primary clutch, see the "Primary transmission"
section.
To install the magneto, see the "Electrical system" section.
CHECKING FOR LEAKS
When dealing with a 2-cylinder engine, it is not possible to check
each cylinder individually because of the leaks at the position of
the labyrinth sleeve at the centre of the crankshaft.
Preparation
1. Remove the calibrated exhaust pipe and the exhaust
manifold.
2. Place plugs on the exhaust flanges and tighten them
using the screws that were removed previously.
3. Remove the carburetors.
4. Insert plugs into the intake flanges. Tighten them using
the ring clamps already in place.
5. Plug the vacuum hoses using the hose pinch clamps
(P/N 529 0099 00).
6. Place the vacuum pump on one of the valves of the
exhaust plug.
l
NOTICE:
If necessary, lubricate the piston of the vacuum pump using a
mild soap.
t t
CAUTION
Hydrocarbon-based lubricants, like motor oil, will damage
the rubber ring of the pump piston.
7. Turn the crankshaft until the piston on the pump side
reaches its lowest point. The exhaust port will then be
open.