Adjustment Of Engine Valve Clearance; Tightening Intake Manifold Bolts And Nuts; Tightening Exhaust Manifold Nuts; Replacement Timing Belt - Mazda 121 Workshop Manual

SCHEDULED MAINTENANCE SERVICES
ADJUSTING SCFEW
LOCKNUT
ADJUSTIIENT OF ENGINE VALVE CLEARANCE
Note
. When valve clearance inspection and cylindefiead r
bolts retightening service are ai the same interval, E
tlEhten the cylinder head bolts tlrst.
I
1. Warm up the engine to normal operating temperature.
2. With the piston ofthe No.1 cylinderat TDC ofcompression,
adjust the valve clearances illustrated.
valve clearance (at valve)
lntake : 0.30mm (0.012 in)
Exhaust: 0.30mm (0.012 in)
3. Turn the crankshaft one full turn so that the piston of the
No.4 cylinder is at TDC ol compression, and adjusl the clear-
ances of the remaining valves.
TIGHTENING INTAKE MANIFOLD BOLTS AND NUTS
Tightening torque:
19-25 N.m (1,9-2.6 m-kg, 14-19 ttlb)
TIGHTENING EXHAUST MANIFOLD NUTS
Tightening lorque:
16-23 Nm (1.6-2.3 m-kg, 12-17 ftlb)
REPLACEMENT TIMING BELT
Refer to Section I ot the Workshop Manual for the replace-
ment procedure of the timing belt.
A-5