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46 – English
Crankshaft bearings – replacement
346XP, 351, 353
If the crankshaft bearings are to be replaced, tap
them out gently using drift 502 70 84-01.
The new bearings must be shrunk-fit into the
crankcase using a hot air gun.
Cleaning and inspection
Clean and inspect all parts carefully.
Sealing ring – replacement
Remove the sealing ring from the magnet side
using tool 502 50 55-01.
Sealing ring replacement - drive side
Remove the oil pump.
1
Pry up the sealing ring from the bearing by using a
small screwdriver or the like.
Note. The sealing ring can be replaced without the
need of removing the bearing.
2
Press the new sealing ring into the bearing.
Repair instructions
Crankshaft complete - dismantling
340, 345, 350
1
Remove the following:
• chain and bar
• clutch cover
• cylinder cover
• starter assembly*
• ignition system*
• generator
• centrifugal clutch*
• throttle pushrod
• carburettor*
• silencer*
• piston and cylinder*
• fuel tank*
* See special instructions.
2
Lift the crankshaft completely out of the crankcase.
350:
Unbolt the four bolts from underneath and lift off
the spacer.
Lift the crankshaft completely out of the crankcase.