Husqvarna NUDA 900 R 2012 Workshop Manual page 160

NUDA 900 2012/2013 - NUDA 900 R 2012/2013
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Workshop Manual Ed. 11-2011
CYLINDER HEAD REMOVAL/DISASSEMBLY
- Using a suitable tool, pre-load the valve spring (5), remove the valve collets
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(6) and then release the valve spring.
- Remove the upper valve spring retainer (7) and the valve spring (5)
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- Remove the bottom valve spring retainer (8).
- Remove the valves (9).
- Remove the valve stem gaskets, using a suitable tool.
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Installation:
- Lubricate the valve stems with engine oil and insert the valves (9) in the head.
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- Insert the gasket (10) on the valve stem, being careful not to ruin the sealing
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- Using a suitable tool, push the gasket (10) in its seat in the cylinder head.
- Repeat the operation also for the other three valves.
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- Fit the lower valve spring retainer (8).
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- Fit the valve spring (5) and the upper valve spring retainer (7).
- With the valve closed, use a suitable tool to pre-load the valve spring (5).
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- Fit the valve (5) collets (6) and release the spring again.
- Then check the correct position of the valve collets (6).
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- Fit the rocker arm pins (4).
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