Technical Information · issue 48 of 2010
Crankshaft/flywheel; Mounting the flywheel; Summary
IssueTI 48/2010
Engine family 1135
Full text
Page 1 of 2
STIH)
Technical Information 48.2010
Chain saws STIHL MS 361, MS 361 C-Q – Series 1135
Contents
1. Crankshaft/flywheel
2. Mounting the flywheel
3. Summary
1. Crankshaft/flywheel Spare parts/service notes
The tightening torque for the crankshaft/flywheel The previous flywheels will no longer be available
taper interference fit has been increased from from the factory.
28 Nm (20.5 lbf.ft.) to 33 Nm (24.5 lbf.ft.). For this, it The new flywheels can also be used with older
was necessary to modify the spline and hub of the machines. The new flywheels are mounted with an
flywheel as well as the keyway of the crankshaft. increased tightening torque of 33 Nm (24.5 lbf.ft.) –
regardless of the spline and cone of the crankshaft.
1.1 Flywheel
On the new flywheels, the spline is shortened and 1.2 Crankshaft
the hub is reinforced. The spline in the crankshaft is being shortened and
The previous flywheel 1135 400 1200 has been simultaneously the cone is being extended.
replaced by the version 1135 400 1203. The part number of the crankshaft remains
unchanged. The new crankshaft can also be
installed in older machines.
TI_48_2010_30_01_01.fm englisch / English Page 2 of 2
Page 2 Technical Information 48.2010
1.3 Tightening torque of the taper 2. Mounting the flywheel
interference fit
. Clean and degrease the crankshaft stub and the
With the help of the markings, it is possible to bore in the flywheel hub before assembly.
identify the flywheels and determine the permissible
tightening torque. Surfaces that are dirty, greasy or coated with oil
could cause the flywheel to become excessively
prestressed. The permissible surface pressure
would be exceeded – cracking and damage to the
flywheel could result.
. Degrease the crankshaft stub and bore in the
flywheel hub with standard solvent-based
degreasant not containing any chlorinated or
halogenated hydrocarbons.
. Fit the flywheel and position it correctly – the key
must line up with the groove
213TI049 KN
. Attach the nut and tighten it to the specified
torque
Part numbers in Marking Tightening
service torque in
service
Previous flywheel
1135 400 1200 1200 28 Nm
(20.5 lbf.ft.)
New flywheel
1135 400 1203 1203 33 Nm
(24.5 lbf.ft.)
The new flywheels are mounted with 33 Nm
regardless of the spline and cone of the crankshaft.
3. Summary
Item Part Name Previous New Rem.
1 Flywheel 1135 400 1200 1135 400 1203 1)
Modification to be introduced: continuously
Remarks
1) Previous version of part is no longer available from factory
© ANDREAS STIHL AG & Co. KG, 2010 Technical Documentation
D1/MTK-bl
TI_48_2010_30_01_01.fm Extracted from the manufacturer's 2012 service catalogue. Most of these PDFs embed fonts with a shifted character map, so the text above was recovered rather than copied — read it as a faithful but imperfect transcription, and treat the page image above each block as the authority where the two disagree — the figures exist only there, because they are vector drawings that text extraction cannot keep.