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Repair instructions
Cleaning and inspection
Clean and inspect all parts carefully.
Sealing ring – replacement
Remove the sealing ring from the crankcase using
a small screwdriver.
NOTE!
Take care to avoid damaging the crank-
case.
To fit the sealing ring use the sleeve that is sup-
plied with 502 50 30-16.
The end with the half moon is used for the sealing
ring on the clutch side, which must be fitted flush
with the surface of the crankcase.
The other end of the sleeve is used to fit the
sealing ring on the flywheel side and ensures that
the sleeve is fitted at the correct depth, 1.8 mm.
Lubricate the sealing rings with oil.
Crankshaft bearings 340, 345, 350 –
replacement
Remove:
• The crankshaft complete from the crankcase,
see page 47.
1
Pull off the crankshaft bearing from crankshaft.
2
Fit a new bearing on the crankshaft.
Crankcase and crankshaft –
reassembly 346XP, 351, 353
1
Hold the clutch side of the crankcase in a vice. Pull
the crankshaft into its bearing using assembly tools
502 70 84-01 and 502 70 45-07.
2
Check that the guide pins are in place. Fit a new
gasket to the mating surface of the clutch side of
the crankcase.
3
Place the flywheel side of the crankcase over the
crankshaft and pull the two crankcase halves
together using assembly tools 502 70 84-01 and
502 70 45-06.