Crankcase And Crankshaft - Husqvarna 340 Workshop Manual

Repair instructions
Crankcase and crankshaft on
350/345/340 – dismantling
1
Remove the following:
guide bar and chain
clutch cover
cylinder cover
starter assembly and cable guide page 20
ignition system
centrifugal clutch
oil pump
carburettor
silencer
piston and cylinder
fuel tank
NOTE!
Take care to prevent dirt or foreign parti-
cles getting into the bearings.
2
Undo and remove the four bolts from the bearing
housing on the underside of the crankcase. Re-
move the earth terminal.
3
Lift out the crankshaft.
44
– English
4
page 23
page 26
page 28
page 31
page 14
page 40
page 38
Pull off the bearings, using puller 504 90 90-02 if
necessary. The bearings are a slip-fit.
Cleaning and inspection
Clean all the components and scrape off any
traces of old gasket from the mating faces of the
crankcase and bearing housing.
Check that:
• There is no radial play in the big end bearing.
• The big end bearing has no score marks or
discoloration at the sides.
• The little end bearing surface is not scored or
discoloured.
• There is no play or noise in the crankshaft
bearings.
• The sealing surfaces of the crankcase seals on
the crankshaft are not worn and the rubber has
not hardened.
• That the crankcase does not show signs of
cracking.
• See also Husqvarna's Analysis guide for faults
and causes.