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Problem	Corrective Action
Waste tank full	Empty waste tank
Out of fuel	Refill gas tank
Machine overheated	Check jet and filter in water box for clog
Water supply turned off	Check for kinks in hose or clogged incoming water filters
Oil level low	Add oil

Problem	Corrective Action
Battery bad	Replace or recharge (be sure to check water level )
Starter fuse blown	Fuse located inline near starter in yellow fuse holder
Battery cable bad	Replace or clean
Ignition switch is bad	Test if bad replace
Vacuum blower seized	Repair or replace
Starter solenoid defective	Test if bad replace

Problem	Corrective Action
Out of fuel	Refill tank an check for obstructions
Fuel filter clogged	Replace fuel filter
Air filter clogged	Replace air filter
Spark plugs fouled	Clean or replace as needed
Cylinder compression low	Test compression if low take to Kohler Service Center or Replace engine

Problem	Corrective Action
2 lb sensor problems fuse # 3
Dirty inlet filter causing 2 lb sensor to prevent starting	Check inlet hose strainer and inlet y-strainer behind front panel
Low inlet water pressure causing 2 lb sensor to prevent starting	Check for supply hose kinks or blockage- if using fresh water tank check water pump
2 lb sensor bad	Remove sensor fuse #3 if motor starts, test sensor replace if bad

Waste tank float fuse # 4
Float bad	Remove fuse #4 if motor starts test float if bad replace

High temp kill sensor fuse # 5
Water box too hot (temp back up older units without water box)	Remove bypass jet and filter from waste tank or water box clean and replace
Temp solenoid not opening	Check fuse, disassemble clean, test replace if bad
High temp sensor or switch gauge	Remove sensor fuse #5 if motor starts, test sensor replace if bad
Low oil pressure Sensor	Check oil, remove sensor wire if motor starts-stop motor check sensor and oil pressure with a pressure gauge, replace sensor if bad. If pressure is low take to Kohler Service Center.

Problem	Corrective Action
Blower won't Turn	Check waste tank filter for clog or collapse
	Check operation of relief valve is correct
	Lube well and turn with wrench or contact Roots Blower division

Problem	Corrective Action
Vacuum low at tool	Check hoses and tool for clog
Vacuum low at tank	Check tank filter, check drain valve for leaks, check for bad or missing gasket clean or replace as needed

Problem	Corrective Action
Water supply is off	Turn on water, check for kinks in hose or clogs
Water filter clogged	Check hose strainer, y-strainer and water box strainer
Water box jet missing or worn	Reinstall or replace
Debris clogging pressure hoses or quick connects	Check all clean or replace
Low volume	Check volume of water coming from pump outlet (3.0gpm-hypro.....4.0gpm cat) Rebuild if low
Belt loose or broken	Replace or tighten
Pressure regulator sticking or not adjusted	Lube or replace and lube o-rings adj. for 400 psi.
Pressure gauge bad	Replace Gauge
Tool filter or tips clogged	Inspect tool for clogs or dirty filters

Problem	Corrective Action
Jet in tool worn or too large	Replace jet in tool
Bypass jet in water box worn or missing	Replace or reinstall jet
Bypass on wand or tool left open	Close bypass valve

Problem	Corrective Action
Water box bypass jet or filter clogged	Remove jet and filter clean or replace
Water bypass solenoid clogged or stuck	Clean or replace
Thermostat bad or out of adjustment	Adjust or replace

Problem	Corrective Action
No chemical	Refill container
Prime knob turned off or to prime	Turn knob to point at meter valve knob
Check valves not sealing or stuck	Clean or replace chemical pump check valves
Chemical pump diaphragm ruptured	Replace bad chemical pump diaphragm
Air leak	Tighten or replace chemical hose

Problem	Corrective Action
No chemical	Refill container
Valve not turned to prime setting	Arrow should point to the left
Pump too dry	Put chemical prime hose (the hose without the strainer) into the vacuum and seal with hand to suck the chemicals through the system
Diaphragm ruptured	Replace bad chemical pump diaphragm
Check valves not sealing or stuck	Clean or replace chemical pump check valves
Air leak	Tighten or replace chemical hoses
Water pump not operating correctly	Repair water pump

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