3-4L43C, 3-4M43, 3-4M43Z Maintenance
HATZ
71Manual
Overview — Adjusting the tappet clearance
Pos. Designation
1 Hex nut
2 Adjusting screw
3 Feeler gauge
Procedure — Adjusting the tappet clearance
Step Activity
1 Check the tappet clearance with the feeler gauge (3). For the
setting, see the chapter 4 Technical data, page 21
2 If the tappet clearance needs to be corrected:
▪ Release the hex nut (1).
▪ Turn the adjustment screw (2) so the feeler gauge (3) can be
pulled through with a barely perceptible resistance after the
hex nut (1) is tightened again.
3 Repeat the above procedure for the entire valve area, taking
special care to use the described adjustment method.
4 Mount the cylinder head cover again:
▪ Always renew the gaskets.
▪ Use the fixing nuts for the cylinder head cover no more than
twice before renewing them.
▪ Tightening torque: 10 Nm.
5 Mount all covers.
NOTE:
▪ Under no circumstances is the engine permitted to be oper-
ated if not all covers are mounted.
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