3.16
ENGINE
3. Visually inspect each cam lobe and bearing for wear,
chafing or damage.
4. Thoroughly clean the cam shaft.
5. Measure height of each cam lobe using a micrometer.
Replace cam if worn below minimum height.
Replace camshaft if damaged or if any part is worn excessively.
Cylinder Head Removal
NOTE: Cam chain and tensioner must be removed. If
no crankshaft service is being performed, secure
cam chain with mechanics wire to avoid chain falling
into the crankcase.
1. Verify the valve cover and tensioner are removed.
2. Remove the two 6mm cylinder/head base screws.
3. Loosen each of the four cylinder head nuts evenly 1/4 turn
each time in a cross pattern until loose.
4. Remove the nuts and tap the rocker assembly with a plastic
hammer until loose. Remove.
5. After removing the camshaft and securing the cam chain,
tap the cylinder head lightly with a plastic hammer until
loose. CAUTION: Tap only in reinforced areas or on
thick parts of cylinder head casting to avoid damaging
casting.
6. Remove cylinder head (A) and head gasket (B).
Cam Lobe Height:
Intake
Std: 1.1730” (29.795 mm)
Limit: 1.1574” (29.40 mm)
Exhaust
Std: 1.1637” (29.56 mm)
Limit: 1.1480” (29.16 mm)
Compression Release-One-way stop
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