CENTRIFUGAL CLUTCH
English – 23
Cleaning and inspection
Clean all components and check the following:
1. Lining thickness on the clutch shoes should not be less
than 3 mm in the most worn area. See fig. 5. In order to
avoid imbalance, all clutch shoes should be replaced
at the same time.
2. Play between the clutch shoes and the clutch hub should
not be excessive.
3. The chain drive-wheel is not worn.
4. The needle roller bearing is in good condition and the
bearing surface on the crankshaft is not damaged.
5. The clutch drum friction surface and bearing surface are
undamaged.
During reassembly of the centrifugal clutch, the chain brake
should be in the off position.
Reassembly
Fig. 5
Fig. 6
NOTE!
The clutch springs should not be opened out
more than necessary. Risk of deformation.
1. Locate the clutch shoes on the hub and fit the springs with
the help of circlip pliers. See fig. 4.
2. Screw the clutch hub onto the crankshaft and tighten with
the clutch tool. Note - left-hand thread. See fig. 6.
3. Remove the piston stop and replace the spark plug and
HT lead.
4. Fit the clutch drum (C) together with the needle roller
bearing (D) and chain drive-wheel (E). Grease the needle
roller bearing before assembly. See fig. 2.
5. Fit the washer and circlip (B). See fig. 2.
6. Refit the cylinder cover, chain and guide bar. See
instruction book.
min 3 mm
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