Actually, I was pissed off. This happens sometimes. You find a problem that matches the complaint then you fix the problem only to find another problem. Some would say that further tested should have been done before starting the repair. Well here's the deal. Labor rates are high. "Further testing" can add a whole lot to a bill. In order to provide a reasonably priced service to our customers, we sometimes have to "go with our gut" on some of these repairs. I gambled and lost on this one. Sort of like playing poker with Frank and John.
So now I had to take the time I was hoping to save and pressure test the engine. To do the test I need to seal the intake and exhaust. This meant making a block off plate and seal for the exhaust port. It also meant bolting a piece of rubber between the intake boot and carb. I also had to expose the crank seals. This means removing the flywheel and associated parts on one side and the clutch and cutting parts on the other side.
So now the ports are all sealed. I removed the spark plug and installed a special adapter that allows me to pump air into the engine. The goal is to pressurized the engine to 7 psi and have it hold that pressure for 1 minute. Spraying a soapy mix around seals and ports will reveal any leaks.
In this picture you can see bubbles forming between the crankcase halves. The bubbles don't look like much but I couldn't even get one pound of pressure to show on my gauge. This is the worst place to have a leak because it means splitting the cases to repair. In most instances this would make the equipment non-repairable because of cost. In this case it may be worth fixing because a new saw retails for $1100. The customer was quoted $400 for the repair which includes all new gaskets and seals, new crank bearings and the new intake boots previously installed. He's thinking about it.
Lets take a closer look at a Husky 562xp that needs to be pressure tested to satisfy a warranty claim.
|Muffler removed and plate installed.|
|Carb removed and plugs/plate installed.|
So there you have it. If this looks like something you want to do on your own then I recommend buying the Mity Vac mv8500 like I've used here. It comes in a hard case along with some plugs and adapters. This tool also works great for bleeding motorcycle clutch and brake systems and that has earned it the Greasy Shop Rag stamp of approval.