NATIONAL® HYDRO 70" TRIPLEX
10—TROUBLE SHOOTING GUIDE
10.1—ENGINE WILL NOT START
Check fuel in tank.
Check if fuel is at end of fuel line at carburetor.
If not, clean filter on fuel shutoff on bottom of tank.
If not, replace fuel filter.
Check spark plugs.
Check for spark at spark plug.
Check for foul condition.
Replace spark plug if necessary, refer to Briggs and Stratton engine manual for recommended spark plug number and gap.
Check position of reel engagement lever and traction pedal, both must be in disengaged (lever) and neutral (pedal) position.
Check electrical wiring and switch operation.
Check positioning of reel control safety switch and traction pedal neutral safety switch. Both must be adjusted to allow current flow from the “s” terminal to the starter solenoid.
Refer to Page 26 for circuit diagram.
Check for continuity of each safety switch. Replace switch as required.
Check battery for charge level. Replace or charge if necessary.
Check for corrosion on battery terminals, clean as necessary.
slippage still occurs as a result of belt wear and belt stretch, replace the belt.
Check drive belts between engine and countershaft pulley. If adjustment is necessary, this can be accomplished by adjusting the clevis on the reel engagement lever for more tension on the belts. If clevis needs to be adjusted beyond the thread length available, replace the belt.
10.4—REEL WILL NOT CUT
Check reel to bedknife clearance with paper, (common newspaper), the reel should cut the entire length of the bedknife. If adjustment is necessary adjust clearance by turning (equal turns on each side of the reel) hex reel adjusters located on each side of the reel. Turn a 1/8 turn at time, periodically checking with paper.
Inspect condition of the reel and bedknife and service as necessary.
To avoid possible serious injury, before making any adjustments or performing maintenance, place all controls in neutral, fully lower cutting units to the ground, turn ignition switch “OFF” and remove key.
10.2—TRACTOR WILL NOT MOVE
Disengage parking brake.
Check towing valve assuring that the valve is totally closed.
Check linkage from traction pedal to the pump control mechanism to assure complete attachment of all linkages.
10.3—REEL NOT TURNING:
Check for debris jammed between reel and bedknife.
Check for proper belt tension. Tensioning on belts for countershaft to reel is
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