Sorry if this is off topic. I couldn't find another StackExchange forum it would fit any better with.
I have a gas powered Troy Bilt (model 01902) pressure washer with a 6.5 HP Briggs & Stratton engine. When I try to start it, it is very difficult to pull the cord. I always hook up the hose to it before starting, turn on the water, and let any air pockets out before starting it. I have found that if I squeeze the trigger to spray water, then it is easier to pull. It starts normally. The engine runs poorly though and it vibrates a lot. If I stop squeezing the trigger to let the water out then the engine quits immediately.
Any ideas on what is wrong and how to fix it?