Manuals by Motomatrix / www.motomatrix.co.uk / The Solution For Lost Motorcycle Coded Keys.
CRANKSHAFT/PISTON/CYLINDER
Cross reference the main journal and bearing sup-
port codes to determine the replacement bearing
color code.
MAIN JOURNAL BEARING SELECTION TABLE:
MAIN JOURNAL
O.D. CODE
BEARING THICKNESS:
Black:
Brown:
Green:
Yellow:
Pink:
After selecting new bearings, recheck the clearance
with a plastigauge. Incorrect clearance can cause
severe engine damage.
BEARING INSTALLATION
Clean the bearing outer surfaces and crankcase
bearing supports.
Apply molybdenum oil solution to the main journal
bearing sliding surfaces on the upper crankcase.
Install the main journal bearing inserts onto the
crankcase bearing supports, aligning each tabs with
each grooves.
12-10
email: info@motomatrix.co.uk
34.000 – 34.006 mm
(1.3386 – 1.3388 in)
1 30.999 – 31.005 mm
(1.2204 – 1.2207 in)
2 30.993 – 30.999 mm
(1.2202 – 1.2204 in)
3 30.987 – 30.993 mm
(1.2200 – 1.2202 in)
Thickest
Thinnest
BEARING SUPPORT I.D.CODE
A
B
34.006 – 34.012 mm
(1.3388 – 1.3391 in)
Pink
Yellow
Yellow
Green
Green
Brown
IDENTIFICATION COLOR
MAIN JOURNAL BEARINGS
C
34.012 – 34.018 mm
(1.3391 – 1.3393 in)
Green
Brown
Black