Triumph 2010 Tiger 800, Service Manual

Page: 83 / 508

Valve Clearances
Camshaft, valve, valve shim and valve seat wear affects the
valve clearances. The effect of this wear is to change the
gap between the camshaft and tappet bucket, causing
engine noise and improper running. If the valve
clearances become too small, permanent damage to the
valve and valve seat will take place. If the valve clearance
becomes too great, the engine will become noisy and will
not run correctly.
·
Valve Clearance Measurement
Note:
• Valve clearance measurement must be
carried out with the engine cold.
1.
Remove the camshaft cover (see page
3-6).
2.
Remove the spark plugs to reduce compression
resistance when turning the engine.
3. Select a high gear and, using the rear wheel, turn the
engine until a pair of camshaft lobes are positioned
pointing away from the valves.
4. Using feeler gauges, measure and record the
clearances for this pair of valves only.
5. Repeat the process until the valve clearances for all
valves have been checked.
Cylinder Head
Note:
•
If the measurement does not fall within the
specified range, adjustment must be made.
•
The correct valve clearances are in the
range given below:
Inlet: 0.10 - 0.20 mm
0.3 2 5 - 0.375 mm
Exhaust:
If the valve clearances are not checked and corrected,
wear could cause the valves to remain partly open,
which lowers performance, burns the valves and valve
seats and may cause serious engine damage.
6. Record the measured valve clearances on a chart
similar to the example shown.
Typical Valve Clearance Chart
(
Inlet Valve No.
Gap Measured
1 as measured (mm)
2
as measured (mm)
3 as measured (mm) ·
·
4 as measured (mm)
5 as measured (mm)
6
as measured <mm>
Exhaust Valve No. Gap Measured
1
as measured (mm)
2
as measured <mm>
3
as measured (mm)
4 as measured (mm>
5
as measured (mm)
6
as measured (mm)
SeJVice Manual
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Tiger 800 and Tiger 800XC
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