Disassembling Crankcase And Removing Crankshaft - Stihl MS 500i Service Manual

28.4 Disassembling Crankcase and Removing Cranks-
haft
2
The scavenging ramp on the crankcase can be damaged
during disassembly. A damaged scavenging ramp can
result in serious engine damage.
Carefully disassemble the crankcase so that the two
halves of the scavenging ramp (arrows) on the two halves
of the crankcase (2 and 7) are not damaged.
Preparations, @ 3.1.
N
Remove the filter cover.
N
Remove the air filter.
N
Remove the shroud.
N
Pull off the spark plug boot.
N
Remove the spark plug.
N
Remove the chain sprocket cover.
N
Remove the chain catcher, @ 5.2.
N
Remove the spiked bumper, @ 5.4.
N
Remove the chain tensioner, @ 12.2.
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Remove the chain brake, @ 13.2.
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Remove the clutch, @ 11.2.
N
Remove the worm, @ 14.4.
N
Remove the oil pump, @ 14.5.
N
Remove the flywheel, @ 18.2.
N
Remove the rewind starter, @ 10.2.
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Remove the filter base, @ 15.2.
N
Remove the throttle body and sleeve, @ 15.4.
N
Remove the handlebar, @ 9.2.
N
Remove the antivibration elements, @ 17.2.
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Remove the generator, @ 22.2.
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Remove the sensor, @ 22.3.
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Remove the controller, @ 19.7.
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Remove the fuel hose, @ 20.4.
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Remove the fuel return hose, @ 20.6.
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Remove impulse hose from guide in tank housing and
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pull it off the crankcase, @ 20.8.
Remove the tank housing, @ 23.8.
N
60
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N
N
N
N
7
N
N
N
N
N
N
N
N
N
N
N
N
The crankshaft (4) is removed from outer side of
crankcase (2) with puller 5910 890 4505.
N
N
Remove the manifold, @ 25.3.
Remove the airflow shroud, @ 25.2.
Remove the injection module, @ 25.8.
Remove the muffler and heat shield, @ 26.2.
Remove the cylinder, @ 27.2.
Remove the piston, @ 27.3.
Removing grommets from crankcase, @ 24.4.
Remove stop buffer, @ 24.6.
Unlock and remove the cover (10).
Remove the oil seals (1 and 8), @ 28.2.
Take out the screws (11).
19
18
Push the service tool 5910 890 2222 (19) onto the
collar studs (arrows) as far as stop, and back off the
spindle (18) at the same time so that it no longer butts
against the crankshaft stub.
Fit and tighten down the nuts.
Turn the spindle (18) clockwise until the crankshaft
(4) is pushed out of the ball bearing (5).
Remove the service tool 5910 890 2222 (19).
Remove crankcase (7) from crankcase (2).
Remove the gasket (6).
25
22
24
Screw guide 5910 895 0901 (23) onto spindle (2) of
puller 5910 890 4505.
Back off the spindle (20) of puller 5910 890 4505.
7
20
21
2
22
23
MS 500i