Removing
Loosen the alternator mounting bolts and remove the alternator drive belt.
Remove the crankshaft pulley.
Remove toothed belt guards.
Disconnect the high voltage wire harness.
Remove spark plugs from cylinder head sockets.
Turn the crankshaft to the TDC position on the compression stroke of the 1st cylinder, aligning the mark on the flywheel with the alignment protrusion on the clutch housing and putting the mark on the camshaft pulley at the level of the cylinder head gasket (see photo).
Loosen the nut securing the idler axle.
Remove the camshaft timing belt.
Installation
Note. Do not turn the camshaft when any of the pistons is at TDC.
Set the camshaft to the TDC position of the ignition stroke of the 1st cylinder, placing a mark on the camshaft pulley at the level of the cylinder head gasket.
Rotate the countershaft sprocket so that the mark on it aligns with the TDC mark on the 1st cylinder piston on the crankshaft pulley.
Set the crankshaft to the position corresponding to the TDC of the compression stroke of the piston of the 1st cylinder according to the marks on the flywheel and on the clutch cover.
Fit the camshaft timing belt onto the pulleys.
Adjust the tension of the toothed belt by turning the tension roller on the axle in the direction opposite to the direction of rotation of the toothed belt.
Rotate the crankshaft two turns and check that the toothed belt tension is correctly adjusted.
Remove the crankshaft pulley and install the toothed belt guards.
Install the crankshaft pulley.
Put on the alternator drive belt and adjust its tension.
Tighten the alternator mounting bolts.
Screw in the spark plugs and connect the high voltage wires.
Check and, if necessary, adjust the ignition timing.
Timing mechanism details:
1 - crankshaft;
2 — a gear pulley of a cranked shaft;
3 - camshaft drive belt;
4 - a gear pulley of an intermediate shaft;
5 - intermediate shaft;
6 — a gear pulley of a camshaft;
7 — a tension roller of a toothed belt;
8 - camshaft;
9 - pusher;
10 - valve springs;
11 - plates of springs;
12 - valves;
13 - adjusting washer;
14 - upper and lower front protective covers of the toothed belt;
15 - stuffing box;
16 - sealing gaskets.
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