Checking The Valves; Checking The Valve Springs; Checking The Valve Spring Seat - Husqvarna FC 350 2014 Repair Manual

17 ENGINE
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E"I// £ V 1)",
17.4.22

Checking the valves

17.4.23

Checking the valve springs

17.4.24

Checking the valve spring seat

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Mark the valves corresponding to their installation position.
• Info
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Place the valves in a carton corresponding to their installation position and
label them.
300117-10
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Check the valve plate for run-out.
Valve - run-out
At the valve plate
If the measured value does not meet specifications:
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Change the valve.
200193-10
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Check sealing seat
Valve - sealing seat width
Intake
Valve - sealing seat width
Exhaust
If the sealing seat is not centered on the valve seat or deviates from the speci­
fication:
302809-10
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Rework the valve seat.
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Check the valve springs for breakage and wear (visual check).
• Info
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Intake valves are marked with a green color coding.
Exhaust valves are marked with a brown color coding.
If the valve spring is broken or worn:
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Change the valve spring.
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Measure the length of the valve springs.
305015-10
Valve spring
Minimum length of intake valve
Minimum length of exhaust valve
If the measured value does not meet specifications:
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Change the valve springs.
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Check the valve spring seat for breakage and wear (visual check).
If the valve spring seat is broken or worn:
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Change the valve spring seat.
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Measure the thickness of the valve spring seat.
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Valve spring seat - thickness
If the measured value does not meet specifications:
305014-10
:,; 0.05 mm (:,; 0.002 in)
6)
on the valve.
1 .40 mm (0.0551 in)
1 .40 mm (0.0551 in)
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41.20 mm (1.622 in)
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41.10 mm (1.6181 in)
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1 .40 ... 1.60 mm (0.0551 ... 0.063 in)
156