Disconnect the negative cable from the battery.
Remove the bottom cover and splash guard (right).
Remove the air filter assembly.
Remove the ignition coils.
Disconnect the ventilation hose.
Remove the cylinder head cover.
Measure the valve clearance.
Turn the crankshaft clockwise so that piston No.1 is at TDC of the compression stroke.
Fig. 2.236. Valve clearance measurement procedure
Measure the valve clearance at point A (fig. 2.236).
If the clearance is not within the standard, replace the valve lifter and adjust the valve clearance to the average value.
Standard valve clearance (on a cold engine): 0.27–0.33 mm.
Note: Record the measured values to select the appropriate valve lifters for replacement.
Rotate the crankshaft 360° clockwise so that piston #4 is at TDC on the compression stroke.
Measure the valve clearance at point B (see fig. 2.236).
If not within the norm, replace the valve lifter and adjust the valve clearance to the average value.
Standard valve clearance (on a cold engine): 0.27–0.33 mm.
Install the cylinder head cover.
Connect the ventilation hose.
Install the ignition coils.
Install the air filter assembly.
Install the bottom cover and splash guard (right).
Content based on information from (mazbook.ru)