Piston Rings; Crankcase; Removing The Crankshaft - Stihl 034 Series User Manual

5.4

Piston Rings

– Remove the piston - see
– Remove rings from piston.
Use a piece of old piston ring to
scrape the grooves clean.
Warning:
Do not install 1.2 mm rings in
pistons with 1.5 mm grooves.
Install the new piston rings in the
grooves so that the radii at the
ends of the rings face upward.
– Install the piston - see
24
5.5

Crankcase

5.5.1

Removing the Crankshaft

5.3.1. – Remove the chain brake -
and 4.5.
– Remove the oil pump -
– Remove the flywheel -
– Remove the ignition module -
6.5.1
– On machines with handle and/or
carburetor heating, remove the
generator -
– Remove the cylinder and piston -
see 5.3.1.
– Remove the tank housing -
12.8.1.
– Remove the spiked bumper.
Use a 5 mm drift or other suitable
tool to drive out the two dowel
pins from the clutch side.
Unscrew the five mounting
screws which join the two halves
of the crankcase.
5.3.2.
Use a screwdriver to rotate the
see 4.4
see 11.4
see 6.4.1 Note:
Use service tools
see AS 5910 007 2205 and
ZS 5910 007 2200 to remove and
install the crankshaft. Follow the
instructions supplied with the tools.
see 10.5.1. – Back off spindle on service tool
see
Slip service tool
spur gear clockwise until the
tensioner slide butts against the
thrust pad.
AS all the way.
AS 5910 007 2205 over the two
collar studs, fit the hexagon nuts
(for sprocket cover) and tighten
them down by hand.
034, 036, 036 QS