OutdoorKing Repair Forum Forums Repairs and Maintenance Questions on Hand and Power Tolls Power Tools Shindaiwa HT-20 hedge trimmer

I have had a good look at the machine today and came away with plenty of spark, clean air filter, excellent plug and plenty of compression.

I can't seem to work out a routine starting procedure. This is also the comment from the previous owner.

The machine has a small bulb in the fuel line just before the carby. Under the carb (where most modern machines have their primer bulb) this one has a lever with "press" stamped into it. Also on the throttle is a lock which keeps the throttle open. It also has a choke.

I can't fugure out why there is a primer bulb on the fuel line and a lever which I guess replaces the usual primer bulb. Surely these two items don't serve the same function.

When I squeeze the fuel primer bulb and it pressurizes the machine starts very cleanly and usually on the first pull. Occasionally the primer doesn't feel at though fuel passes and no amout of pulling will fire it up. Obviously there is little or no fuel in the system.

The fuel bulb pressurizes if I release the fuel cap.

The unit does not have a fuel return line via the primer. It simply drips out of an open ended line.

Edit. You can see the push tab on the primer lever in the last photo and the fuel line bulb in the third last shot under the four intake tubes on the airfilter housing.