Checking The Valve Clearance; Adjusting The Valve Clearance - Husqvarna FS 450 2015 Repair Manual

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17
ENGINE
17.5.27

Checking the valve clearance

17.5.28

Adjusting the valve clearance

-
Position the timing chain tensioner with the gasket.
-
Mount and tighten screws
Guideline
I
Screw, timing chain tensioner
-
Mount and tighten screw plug
Guideline
I
Plug, timing chain tensioner
O.
-
Remove special tool
I
Locking screw (113080802)
-
Crank over the engine repeatedly.
Position the engine at ignition top dead center.
-
Check the valve clearance at all valves between the valve and rocker arm.
Guideline
Valve clearance
Intake at: 20 °C (68 °F)
Exhaust at: 20 °C (68 °F)
I
Feeler gauge (590290411 00)
If the valve clearance does not meet specifications:
-
Adjust the valve clearance.
-
Remove the special tool.
I
Locking screw (113080802)
-
Mount and tighten screw
Guideline
I
Screw plug, crankshaft location
-
Remove the timing chain tensioner.
-
Remove the camshaft.
(Ill:!
O.
f9
@)
with washer
and spring
(a
p. 227)
(a
p. 133)
I
0.10 ... 0.15 mm (0.0039 ... 0.0059 in)
I
0.12 ... 0.17 mm (0.0047 ... 0.0067 in)
(Ill:!
p. 229)
(Ill:!
p. 184)
(Ill:!
p. 227)
8.
(Ill:!
p. 134)
p. 134)
184
10 Nm (7.4 lbf ft)
8 .
I 8 Nm (5.9 lbf ft)
10 Nm (7.4 lbf ft)

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