Installing The Drive Wheel Of The Balancer Shaft; Cylinder - Nikasil ® Coating; Checking/Measuring The Cylinder - Husqvarna FE 250 EU 2014 Repair Manual

ENGINE
18
18.4.12

Installing the drive wheel of the balancer shaft

18.4.13 Cylinder - Nikasil
18.4.14

Checking/measuring the cylinder

'--
-
Ensure that woodruff key
-
Warm drive wheel @ of the balancer shaft and push it onto the balancer shaft.
Guideline
1100 °C (212 °F)
303077-10
® coating
is a surface protection layer for a coating procedure developed by Mahle.
®
Nikasil
The name is derived from the two materials used in this procedure - a layer of nickel
into which is embedded the particularly hard silicone carbide.
The most important advantages of the
tivity, resulting in much improved performance, low wear, and a lightweight cylinder.
308787-10
-
Check the cylinder bearing surface for damage.
If the cylinder bearing surface is damaged:
-
Change the cylinder and piston.
-
Measure the cylinder diameter at several locations on the
a micrometer to identify oval wear.
Guideline
Cylinder - drill hole diameter
Size I
Size II
• Info
I
The cylinder size
-
Using a straightedge and the special tool, check the sealing area of the cylinder
head for distortion.
I
Feeler gauge (590290411 00)
Cylinder/cylinder head - distortion of
sealing area
If the measured value does not meet specifications:
-
Change the cylinder.
305004-10
O
is seated properly.
coating are very good heat conduc­
®
Nikasil
78.000 ... 78.012 mm (3.07086 ...
3.07133 in)
78.012 ... 78.025 mm (3.07133 ...
3.07184 in)
O
is marked on the cylinder collar.
(� p. 269)
s; 0.10 mm (::. 0.0039 in)
155
0-
and using
0-axes