Checking The Timing Chain Tensioner; Checking The Timing Chain; Checking The Cylinder Head - Yamaha F200C Service Manual

POWR
3. Measure the camshaft runout. Replace if
out of specification.
Camshaft runout limit:
0.03 mm (0.0012 in)
4. Measure the camshaft journal diameter
c and cylinder head journal inside diam-
eter d. Replace the camshaft and cylin-
der head if out of specification.
Camshaft journal diameter c:
24.96–24.98 mm
(0.9827–0.9834 in)
Camshaft cap inside diameter d:
25.00–25.02 mm
(0.9843–0.9850 in)
5. Calculate the camshaft oil clearance e
as follows. Replace the camshaft and
cylinder head as a set if out of specifica-
tion.
5-39
Power unit
S69J5970
Camshaft oil clearance e =
Camshaft cap inside diameter d –
Camshaft journal diameter c:
0.02–0.06 mm (0.0008–0.0023 in)

Checking the timing chain tensioner

1. Measure the plunger extended length a.
Replace if out of specification.
NOTE:
Check the timing chain tensioner every 400
hours of operation.
Timing chain tensioner wear limit a:
1.0 mm (0.04 in) from standard

Checking the timing chain

1. Check the timing chain for damage or
wear. Replace if necessary.

Checking the cylinder head

1. Eliminate carbon deposits from the com-
bustion chambers and check for deterio-
ration.
69J1D11