Stanley 5.5HP 2500PSI PW6655

Solid unit but – after a while it can become difficult to work with. I actually bought the predecessor to this model so some of the modifications required have already been implemented on this model, like fitting a carb that has mixture adjustment. Good points. Inexpensive unit. Variety of jets Supports siphon feed for additives like floor cleaner, liquid soap etc. Does not use oil Economical on fuel, tolerates e10 Easy to service. Hose and trigger action are good units. When the unit is jetted and tuned correctly, has enough power to lift a roto head right off the floor!

Now the undocumented features. Hard to start. If you are running them on e10, the fuel sets like jelly in the small strainer bowl where the fuel tap is. Fortunately this is an easy fix, particularly if you have compressed air. Remove the bowl and blast both the cup and the outlet passages into the carb's main bowl and that rectifies the problem of starving for fuel. Even with the primary bowl/tap arrangement cleaned, still difficult to start on a cold motor. A metre of aquarium air line does the trick. Dip one end of the tubing into the tank and siphon a small amount of fuel into the aquarium line. Remove air filter and with the choke wide open, insert the tubing into the carb and give it a short puff to prime the carb. Now, full choke and it starts first go. Set choke to half for first few minutes of operation. Reassemble air filter elements. If the motor starts starving for fuel, it will be a case of the tap and primary fuel filter bowl assembly having a restriction in it. Refer to previous notes about leaving the unit standing for long periods with e10 in it. With the carb on this model, there is provision for adjusting the mixture screw. I run mine nearly all the way out and it still seems to be running lean. Adjust the mixture screw so that when the unit is running, there is little or no oscillation of the governor/butterfly valve lever. Motor should just run evenly. Sooner or later, unit won't start no matter what you do. It's the tip sensor. Disconnect the wire that runs from this sensor to the on/off switch. It's right near it. Wear hearing protection. So only two negatives really. Difficult to start until you employ outboard motor technique and inject fuel into carb on a cold motor. Any other time, always use choke to start it. Even when hot. Disconnect the tip sensor. Sooner or later it's going to fail and you will be chasing ghosts trying to figure out why you have no spark. Tip: attach a 300mm rigid irrigation tube riser to the end of the siphon pick up if you are running detergent etc through the pick up. A couple of 5/16" nuts or weights of some sort around the tubing also helps keep the pick up in the detergent if you are using it. Suspend the detergent bottle on a hook above engine but away from hot surfaces. Mufflers melt holes through the plastic detergent bottles....apparently.