Checking The Valve Clearance - Husqvarna FC 450 2018 Repair Manual

17 .5.27

Checking the valve clearance

-
Position the timing chain tensioner with the gasket.
-
Mount and tighten screws
Guideline
Screw, timing chain
tensioner
- e.
Mount and tighten screw plug
spring
Guideline
Plug, timing chain
tensioner
O.
-
Remove special tool
I
Locking screw (113080802)
-
Crank the engine several times.
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.
O.
M6 10 Nm (7.4 lbf ft)
8 8
with washer and
MS 8 Nm (5.9 lbf ft)
(il!:!I p. 307)
(il!:!I p. 175)
0.10 ... 0.15 mm (0.0039 ...
0.0059 in)
0.12 ... 0.17 mm (0.0047 ...
0.0067 in)
(0 p. 311)
(il!:!I p. 238)
ENGINE 17
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237