Trouble Shooting - Rotax Fr 125 Max Betriebsanleitung

13. Trouble shooting

Trouble
electric starter does not run when pressing
start button
starter motor rotates but doesn't engage
engine won't start
engine does not idle properly and stops
running
engine performance drops at approximately
7000 r.p.m.
engine shows performance loss
engine does not reach the top speed of
14.000 r.p.m.
engine misfires during kart operation
Seite/page 78/80
Operating Instructions FR 125 MAX
Possible fault
wrong connected wiring
cable harness damaged
battery not connected
inadequately charged battery
starter gear assembly dirty
ON/OFF circuit breaker not actuated
battery not connected
inadequately charged battery
faulty spark plug
not enough fuel in fuel tank
no fuel supply to carburetor
fuel filter clogged
cable harness damaged
lost compression
bad idling adjustment of carburetor
bad mixture preparation adjustment at idling
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
bad jetting of the carburetor
bad contact on connections of battery and the
cable harness
jetting of the carburetor is too lean
FR 125 MAX
Remedy
verify connection, see connections and
routing of cable harness
renew cable harness
verify battery connection
exchange or charge battery, see battery and
charging of battery
clean the starter gear
actuate ON/OFF circuit breaker, see engine
start
verify battery connection
exchange or charge battery, see battery and
charging of battery
exchange spark plug
replenish fuel
verify connections on fuel pump, see
installation of the fuel pump
clean fuel filter (refer to carburetor calibration)
renew cable harness
conduct tear-down inspection of engine
adjust the idle speed (refer to carburetor
calibration)
adjust mixture preparation at idling (refer to
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)
optimize the carburetor jetting (refer to
carburetor calibration)
establish good connections
optimize carburetor jetting (refer to carburetor
calibration)
Ausgabe/edition 07/99