REGULAR MAINTENANCE
ENGLISH
79
2) Valve clearance adjustment
- Adjust the air intake valve and the exhaust valve of the cylinder 1.
- Adjust the air intake valve of the cylinder 2.
- Adjust the exhaust valve of the cylinder 3.
- Rotate the engine crank shaft one time (360°) and adjust it to "0" marked on the crank shaft
pulley. (top dead center of cylinder 4)
- Adjust the air intake valve and the exhaust valve of the cylinder 4.
- Adjust the air intake valve of the cylinder 3.
- Adjust the exhaust valve of the cylinder 2.
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The valve clearance adjustment proceeds as follows.
- Check if the push rod is easily moved by hand, and unfasten the check nut.
Loosen the jack bolt a little bit using a screwdriver and insert the THICKNESS GAUGE.
Turn the jack bolt to adjust the valve clearance. After completing the adjustment, fasten the
jack bolt and the check nut. (Figure 3)
- The valve clearance should be adjusted in cold. (air intake/exhaust clearance cold 0.25mm)
- Check nut tightening torque: 27~34 N·m
Jack bolt
Check nut
Exhaust
Air intake
Figure 1. Check the top dead center (1)
Figure 2. Check the top dead center (1)
Figure 3. Valve clearance adjustment
Summary of Contents for GP-W500B6C
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