18
ENGINE
169
18.4.25 Checking the cam levers
302718-10
–
Check the cam levers and cam lever shafts for damage and wear.
» If there is damage or wear:
–
Change the cam levers and/or cam lever shafts.
18.4.26 Checking the cylinder head
302805-10
–
Check valve guides
using the special tool.
Limit plug gauge (77229026000) (
» If the special tool is easy to insert in the valve guide:
–
Change the valve guide and valve.
–
Check the sealing area of the spark plug thread and the valve seats from damage
and cracking.
» If there is damage or cracking:
–
Change the cylinder head.
305005-10
–
Using a straightedge and the special tool, check the sealing area of the cylinder for
distortion.
Feeler gauge (59029041100) (
Cylinder/cylinder head - distortion of
sealing area
≤
0.10 mm (
≤
0.0039 in)
» If the measured value does not meet specifications:
–
Change the cylinder head.
302808-10
–
Check sealing seat
of the valves.
Valve - sealing seat width
Intake
1.40 mm (0.0551 in)
Valve - sealing seat width
Exhaust
1.40 mm (0.0551 in)
» If the measured value does not meet specifications:
–
Rework the valve seat.
–
Blow compressed air through all oil channels and check that they are clear.
18.4.27 Installing the valves
302712-11
–
Position valve spring seat
. Mount valve stem seal
.
–
Mount the valve corresponding to its installation position.
–
Mount the valve spring with the tighter coil facing downward.
–
Mount the valve spring retainers.
Summary of Contents for 350 EXC-F SIX DAYS EU
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