L.T. Rich Products Z-Plug, Owner'S Manual

Troubleshooting 
 
 

Engine: 



Not starting. There are a few reasons as to why your engine fails to start. If 
the engine does not turn over, then the battery could be dead, bad 
connection to the battery wires, key switch may be bad, 30 AMP fuse on 
the wiring harness (orange wire) may be blown or the starter solenoid may 
be bad (you will hear the starter solenoid trying to click on, but nothing is 
happening). Another common reason for a unit not starting is after unit has 
been washed. Water gets into the spark plug boot and gets the spark plug 
wet. Pull spark plug boot and dry (spray WD-40).   



Engine turns over but doesn’t start. There are a few reasons as to why your 
engine will turn over but not start. If the fuel valve is turned off (under 
fuel tank), loose or bad spark plug, water in fuel, choke partially closed or 
wet and/or foul plugs. 



Engine won’t stay running. Few things to look for if your engine does not 
stay running are clogged fuel filter, clogged and/or dirty air filter, fuel 
valve partially closed or water in fuel. 

Hydraulics: 



Hydraulic system making loud noise when running. This could be caused 
by a couple of things. The most common is if there is air in the system. 
This can be caused when changing out a hydro pump, replacing a 
hydraulic hose or having a loose fitting on the intake lines. If air is not 
present, check for low levels in the system. This happens when there is a 
leak in the hydraulic system somewhere or hydraulic fluids were just 
changed and did not get back to the proper fill level.  



Need to tow my unit; what do I need to do in order to not ruin my hydro 
pumps?? There are tow valves on each of the hydro pumps (hex head with 
hole running through it on the left side rear of the hydraulic pump) that 
needs to be turn at least 1 ½ revolutions counter-clockwise to open the 
hydraulic system. Once the unit is brought to a desired location, remember 
to tighten the tow valves back tight (clockwise). 

Tracking: 



Unit not tracking straight when pushing both control arms to the speed 

bar. This is caused when the linkage to the hydraulic pump is not even or 
a hydraulic pump is going bad. Traditionally the linkage needs to be 
adjusted so that they both have the same amount of pull. If it is pulling to 
the left, the left hydraulic pump linkage is longer than the right; you can 
either adjust the right to a longer linkage, or adjust the left to a shorter 
linkage to match the right. 

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