Checking and adjustment is performed on a cold engine (at normal temperature).
Be careful, because the locations of the intake and exhaust valves are different from conventional engines.
1. Remove the following parts.
- Engine protection from the bottom
- Intercooler
- Engine cover
- Valve cover
2. Set the piston of the 1st cylinder to TDC of the compression stroke.
Turning the crankshaft clockwise, set the left camshaft pin strictly upwards.
Note: There is no position mark on the crankshaft pulley.
3. Apply alignment marks on the crankshaft pulley and on the oil pump.
4. Looking at the drawing, measure the clearances in the valves marked with the O sign in Table No.1.
Note: Cylinder firing order is 1-3-4-2.
The measurement is carried out using a special JIS probe.
Standard clearances:
On a cold engine:
- Inlet: 0.28±0.04mm
- Issue: 0.30±0.04 mm
On a warm engine (at 80°C):
- Inlet: 0.33±0.056 mm
- Issue: 0.37±0.062 mm
5. Turn the crankshaft one revolution clockwise and set the piston of the 4th cylinder to the TDC position of the compression stroke.
6. Looking at the figure, measure the gaps in the valves marked with the O sign in Table No.2 (see next page.).
Table No.1
Table No.2
7. If the gaps are different from the standard, make adjustments as follows.
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