Before starting, check that the crankshaft main bearing journals and big-end journals are free of burrs or evident signs of machining: if necessary, clean the surfaces with very fine emery cloth and oil.
Check that the grooves are in perfect condition with no signs of forcing.
Clean the crank pin (o) on the crankshaft (6) thoroughly and lubricate.
Take the bearings (3) necessary to shaft/connecting rod coupling, following the indications provided (sect. 3 - 1.1, Cylinder/piston).
Insert the bearings in the connecting rod seats matching the tooth (m) of the bearings with the corresponding marks (n) on the connecting rod cap (f) and on the connecting rod small end (g). It is essential that the tooth (m) adheres perfectly with its own mark (n).
Warning
In the case of blue and yellow bearing coupling, fit the yellow on the connecting rod and the blue on the connecting rod cap.
Lubricate the bearing (3) fitted on the connecting rod small end.
Check that each connecting rod (2) and cap are fitted with their locating pins (d).
Wash the pins and dry them with compressed air.
Fit the connecting rod on the crankshaft, in the same position in which it was removed.
Insert the connecting rod in the crankshaft, so that the centring pins face the internal side.
Join the connecting rod cap (f) with the corresponding connecting rod small end (g), checking that the progressive number stamped on the two pieces is the same, as shown in the figure.
Important
Check that the progressive numbers of a connecting rod are next to the selection of the other connecting rod.
Fill the recommended grease into the two ends of the hole to lubricate threads and underside of the new screws (1) and the thread of the shaft.
Warning
The grease utilised is an irritant in contact with the skin. Wear protective gloves.
Important
Lubrication of big-end cap screws is essential to obtain the correct coupling and to prevent breakage of the parts.
The big-end cap screws may only be used for one tightening.
Tighten the screws (1) by hand.
If this proves difficult or if the screws jam, undo them and lubricate them again.
Remove excess grease. Tighten the screw by hand until the head seats against the connecting rod.
Fit the spacer (h) of the tool 88713.2878 Between the connecting rods and take up residual axial clearance with the fork feeler gauge (i) of the tool 88713.2878 Which is available in the following thicknesses: 0.1 Mm - 0.2 Mm - 0.3 Mm.
Temporarily fit the gudgeon pin (l) to align the connecting rods, and then tighten the screws.
Tighten the screws (1) with a torque wrench and angle reading (degree wheel) in accordance with the procedure described below (observe the same tightening sequence at each step as that of the previous step):
Important
If the final angle is less than 55 or greater than 75, repeat the procedure using two new screws.
Dds diagnosis instrument
The main functions of the dds diagnosis instrument can be summarised as
follows:
Retrieval of errors (faults) of the ignition-injection system stored in
the engine control unit memory and their subsequent
deletion, if required.
Reading of engine parameters (rpm, coolant and air temperat ...
Abs system operating information
The response of the system is based on the analysis of the speed signals for
front and rear wheels; the system is
automatically deactivated if either of these signals is missing.
Note
In the event of the abs control unit detecting a fault in the abs
electronic management system, it activates ...
Residual range indication when the service is due
After resetting the first oil service warning (triggered at 1000 km), upon
every key-on the system displays the
indication of which type of service should be performed next (oil service or
desmo service) and the residual range.
A (green) warning (1) is activated for 2 seconds on every key-on ...