Attention! After installing the hydraulic tappets, wait at least 30 minutes before starting the engine (it is recommended to postpone the launch to the next morning), otherwise the risk of pistons colliding with the valves cannot be completely eliminated!
1. The valve tappets on the engine in question are equipped with hydraulic compensators, which eliminates the need for regular adjustment of valve clearances.
2. In the event of an increase in the level of noise emitted by the valve mechanism, the correct functioning of the hydraulic tappets should be checked.
3. Warm up the engine to normal operating temperature. For a couple of minutes, raise the engine speed to 2500 per minute (fast idle speed), then stop the engine. Remove the cylinder head cover (see Section Removal and installation of a cover of a head of cylinders).
4. Turning the engine by the crankshaft bolt, set the cam of the first camshaft cylinder with the working ledge up.
5. Using a blade feeler gauge, measure the gap between the heel of the cam and the end face of the hydraulic pusher assembly. If the measurement result exceeds 0.2 mm, the plunger must be replaced.
6. With a normal clearance (less than 0.2 mm) rest against the upper end of the pusher and press it down until it stops against the valve stem.
Note. Pushing the pusher should be done only with a tool made of soft material (wood, plastic).
7. If the stroke of the pusher against the stop on the valve stem exceeds 0.2 mm, the assembly is faulty and must be replaced.