Rothenberger ROBLAST JETTER, Manual

SAFE JETTING

PREPARATION FOR USE

1. Be sure to diligently check the oil in the pump,  
    and engine daily. 
 
NOTE there are separate oil reservoirs for the pump and 
engine. 
 
2. With the machine placed upon a level surface, the 
    pump oil level should cover the red dot located in    
    the oil level sight glass on the side of the pump. 
 
If necessary, top-up the oil level (use non foaming type 
of oil [refer to pump manufacturers manual]). Be very 
careful to not mix different oil grades as this may prove 
detrimental to the machine’s performance. If you are 

planning to use alternative oil, be sure to first empty 

the remaining oil by unscrewing the drain plug at the 
bottom of the pump.
 

3. After filling the oil to an adequate level, ensure that 

    the breather plugs is fitted back to the pump.

 
4. Remember to carefully check the engine’s oil level on  
    a daily basis. Please refer to the engine  
    manufacturer’s separate handbook for further  
    guidance.

1. Pull a sufficient amount of water supply hose 

    off the reel and connect this to the water tap. 
 

NOTE the break tank is fitted with a low water cut 

off switch. This means that the engine will not run 
if the water level drops below a certain point. 
 
2. Turn on water supply 

NOTE the tap should be fully on. Please ensure 
that there are no leaks throughout the supply 
hose and/or connections. 
 

3. Ensure that the break tank is full, and the float 

    valve has shut off. 
 
4. Engage the battery isolator and check that the  
    emergency stop button is reset.  
 
5. Ensure that your main hose is connected to the  
    safe starting connector.
 
NOTE If your jetter does not have a safety starting 
connector, you can hold an open-ended hose in 
your hand and simply point it downwards.

Ensure that no nozzle is fitted to the

hose. It must be open flow.

 
6. Ensure that the ball valve is in the  
    

OPEN

 position. 

 
7. Ensure that the engine choke is fully on.     
    Then, proceed to turn the key to 

start the  

    engine

. Please refer to the engine manual  

    for further details.
 
8. Adjust throttle speed as required. 
 
9. Once the engine has been started, 

close the  

    ball valve

, at which point the pump will  

    now go into bypass mode, and 

release the  

    engine choke

.

OIL PROPERTIES 

Oil loses its lubricity over time. Therefore, change the 
pump oil during regular service. Failure to carry out 
the regular maintenance voids warranty. For more 
information, refer to page 17.

BATTERY MAINTENACE 

The ROTHENBERGER jetter is fitted with a lead acid 

battery. It may be necessary to run the jetter for at least 
20 minutes to recharge the battery as required.  

If the battery is flat, it may be recharged using a 

battery charger. Contact a battery specialist for further 
assistance.  

8