- Turn the engine to move the references to the top
as shown in the figure (intake end).
- Insert the valve lifting device mass stop bell.
- Tighten the retaining screw to the prescribed torque, using the recommended product.
N.B.
THE BELL TIMING IS ENSURED BY THE COUNTERWEIGHT MASS FASTENING SCREW HEAD.
Recommended products
Loctite 243 Medium strength threadlock
Loctite 243 medium-strength threadlock
- Check that the decompression mass is free and
that it is pulled by the spring.
Locking torques (N*m)
Valve lifter mass stop bell fixing screws 30 - 35
- Place the engine with the valve clearance adjustment timing references aligned with the head.
- Check the clearance between valve and rocking lever using a thickness gauge.
PRESCRIBED CLEARANCE
Specification
Desc./Quantity
Inlet 0.15 mm (engine cold)
drainage 0.15 mm (engine cold)
- In case different values are found, adjust by loos-
ening the lock nut and use a screwdriver for the set
screw as shown in the figure.
Nexus 500 euro 3 Engine
ENG - 159
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