G.18 Part. N. 8000 B0148 (02-2008)
ENGINE OVERHAULING
0,30÷0,50 mm 0,6 mm
(0.012÷0.020 in.) (0.024 in.)
STANDARD WEAR LIMIT
Clutch unit
Check that all clutch unit components are in good condition. The clutch discs
should not be burnt or scored. Check the thickness of the clutch lining discs.
Thickness of new plate: 0.118 in. Wear limit: 0.114 in.
Check the distortion of each plate (both lined and unlined) by resting on a flat
surface; use a feeler gauge.
Wear limit: 0,2 mm (0.00078 in.).
Clutch housing-friction disc clearance
Clutch spring (excluded SMR 450-R)
Check the free lenght “L” of each spring with a gauge.
New spring: L= 1.61 in. Wear limit: 1.53 in.
Replace any spring which does not meet with this specification.