Suzuki Wagon R Manual page 3115

6A2-52 ENGINE MECHANICAL (M13 ENGINE)
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Installation
1) Install tappets and shims to cylinder head.
Apply engine oil around tappet and then install it to cylinder
head.
NOTE:
When installing shim, make sure to direct shim No. side
toward tappet.
2) Install camshaft bearing (1) to cylinder head.
CAUTION:
Do not apply engine oil to camshaft bearing back.
Only a upper half bearing of intake camshaft bearing
No.1 has some holes. Other bearings.
3) Install intake camshaft (1) and exhaust camshaft (2).
Align knock pin (3) and match mark (4) with notches (5) as
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shown in the figure.
"a"
"a": Approx. 30°
NOTE:
Before installing camshafts, turn crankshaft until key
faces upward. Refer to "Timing Chain and Chain Ten-
sioner".
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4) Apply engine oil to sliding surface of each camshaft and
camshaft journal then install them as shown in figure.
5) Install camshaft housing pins (1) as shown in figure.