Checking The Valves - Husqvarna FS 450 2019 Repair Manual

17 .4.29

Checking the valves

Info
The valve stem is hard-chrome plated; wear generally appears at the valve guide.
Press the small camshaft bearing in until flush using special
8.
tool
Pressing tool (75029044020)
D04987-10
Press the large camshaft bearing in all the way using special
0.
tool
Pressing tool (75029044010)
D04988-10
Check the valve plate for run-out.
Valve
Run-out at valve plate
If the measured value does not meet specifications:
- Change the valve.
Check sealing seat
If the sealing surface is damaged or worn:
Machine the valve seat.
302808-10
(IUI p. 315)
(IUI p. 315)
::; 0.05 mm (='> 0.002 in)
f)
on valve for damage and wear.
ENGINE 17
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