Operation manual - Spider ILD0147 / 54 rev. 07-01-01-201012 TROUBLESHOOTINGProblem Possible cause CorrectionNothing appears on the display RC battery is exhausted Replace the battery with a chargedEngine does not startAccumulator is discharged Charge the batteryAccumulator is disconnected Attach terminal connectors to theCable lines are broken Check/replace the cable linesCheck the fuseSpark plug does not spark Clean the spark plugFuel filter is clogged Change itNot enough fuel RefuelNot enough oil in engine Refill oil up to the required levelNo signal or the mower is out of thesignal rangeCheck the aerial attachment / Movecloser to the mowerEmergency button on the mower ispressed Unlock the buttonThe mower does not travelproperly/at allNot enough oil in the hydraulic Refill oil and de-aerate properlyOil is overheated Clean the fan area, wait tilloil cools downHydraulic pump filter is clogged Change itMechanic elements of thehydraulic drive are worn out Change themThe mower cannot climb slopesV-belts are worn Replace themV-belts are not tensioned enough Tension themDamaged hydraulic pumpservomotor Change itThe mower vibrates when startedBlade carrier shaft is curved Replace the shaftBlade is damaged Replace the bladeBlade is not attached properly Change the blade bolts and tightenUnevenly worn out or damaged Replace itBad mowing qualityGrass is overgrown, too highMow only grass which is maximum3x taller that the pre-set stubbleheight. We recommend to mow theWorn/blunt cutting edge of the Sharpen or replace the bladeGrass is too wet Wait till the grass driesLow engine speed Set the engine speed to maximumToo high driving speed Lower the driving speed