Rotax 125 MAX DD2 Einbauhinweise Und Betriebsanleitung Seite 96

engine performance drops at approximately
7000 r.p.m.
engine shows performance loss
engine does not reach the top speed of
13.800 r.p.m.
engine misfires during kart operation
engine overheats
engine vibrates excessively
centrifugal clutch is slipping at speeds
above 4.000 r.p.m.
centrifugal clutch does not release at idle
speed of engine
Excessive noise emission from exhaust
system
Overload clutch
Overload clutch at clutch drum
Seite/page 96/100
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Operating Instructions 125 MAX DD2
bad mixture preparation adjustment at idling adjust mixture preparation at idling (refer to
incorrect setting of the exhaust valve timing
carbon deposits on the exhaust valve
bad compression
bad jetting of the carburetor
insufficient fuel supply to the carburetor
fuel filter in carburetor clogged
exhaust valve coking
Isolating mat burned away
bad jetting of the carburetor
bad contact on connections of battery and
the cable harness
jetting of the carburetor is too lean
Engine usage at low ambient temperature
(up to 10°C / )
Wrong spark plug gap
Battery voltage to low
Groundig of engine damaget or loose
After muffler isolating mat burned away
inadequate amount of coolant in the cooling
system
inactive cooling circuit
coolant emerges on leakage bore of
crankcase
cooling fins of radiator dirty
Loose engine attachment on frame
Drive of balance gear set incorrectly
Centrifugal clutch damaged
friction lining worn
clutch spring fractured
Damping material in the after-muffler worn
4x bushings in the overload clutch worn out
4x hex screw not torquet correctly
Thrust washer of overload clutch worn
Hex. nut not torquet correctly
manuals search engine
carburetor calibration)
adjust the exhaust valve timing (refer to
carburetor calibration)
clean the exhaust valve
conduct tear-down inspection
optimize the carburetor jetting (refer to
carburetor calibration)
check the fuel supply to the carburetor
clean the fuel filter (refer to carburetor
calibration)
Clean exhaust valve
Replace isolating mat
optimize the carburetor jetting (refer to
carburetor calibration)
establish good connections
optimize carburetor jetting (refer
carburetor calibration)
Usage of a spark plug which is
recommended for this circumstances (for
example.: DENSO IW 27)
Adjust spark plug gap to 0,4 – 0,6 mm /
0,015 – 0,024 in
Charge battery
Tighten or repair grounding
Replace isolating mat
replenish coolant
conduct tear-down inspection
conduct tear-down inspection
clean radiator
Check engine attachment and re-tighten as
required
correct adjustment
Replace damaged parts
renew all 3 fly weights
renew all 3 clutch springs
Renew the damping material
Replace bushings
Torque hex screw with 10 Nm
Replace thrust washers
Torque hex nut accordingly
Ausgabe/edition 01/2006
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