Twin cylinder, four-stroke, 90 "l" type, longitudinal, with deep sump die-cast crankcase.
Bore, mm: 106
Stroke, mm: 67.9
Total displacement, cu. Cm: 1198
Compression ratio: 11.5В±0.5:1
Max power at crankshaft (95/1/ec), kw/hp: 119 kw/162 hp at 9,500 rpm
Max torque at crankshaft (95/1/ec): 13 kgm/128 nm at 8,000 rpm
Maximum rpm: 10,800
Important
Do not exceed the specified rpm limits in any running conditions.
Cylinder compression test
Note
The on-screen icons used during this procedure are explained in a table at
the end of this section.
Engine performance is directly correlated to the pressure that can be
measured in the combustion chambers of the two
cylinders. Pressure which is too high/low or an excessive difference be ...
Refitting the lubrication system
Note
Before fitting the pipes (7), it is recommended to check the presence of
the o-rings (e). Lubricate them by using engine
oil.
If the nipples (5) have been removed from the radiator insert a washer (6) on
each nipple (5) and apply specific
threadlocker on threads on the radiator side ...
Spark plugs replacement
Check the colour of the ceramic insulation around the central electrode:
an even, light brown colour indicates the engine is in good condition and
running at the right temperature.
Inspect the centre electrode for wear and check spark plug gap, which should be:
0.8+/-0.1 Mm.
Important
...