To adjust the tension of the G4GC engine drive belt, you must:
1. Remove the engine cover.
2. Loosen the four bolts (B) and remove the upper drive belt cover (A).
3. Set the piston of the first cylinder to the top dead center position. To do this, turn the crankshaft pulley and align the recess on the pulley with the "T" mark on the lower cover of the drive belt, as shown in the figure.
4. Loosen the tensioner pulley bolt (A).
5. Turn the crankshaft clockwise (when looking at the engine from the front) by two teeth of the gear (180) of the camshaft sprocket (A).
6. By turning the tensioner in the direction of the arrow (see figure), remove the slack from the drive belt.
7. Tighten the tensioner bolt to a torque of 43-55 Nm.
8. Check the tension of the drive belt by applying a load of 2 kg (20 N) to the location shown in the figure and measuring the deflection, which should be 4-6 mm.
9. Turn the crankshaft two turns clockwise and adjust the position of the camshaft and crankshaft sprockets according to the timing marks.
10. Install the upper drive belt cover (A) and tighten the four bolts (B) to 8-10 Nm.
11. Install the engine cover.
