Chainsaw Repair

All this information was already posted in various places around the forum. I tried to make it short and sweet and in one place.

For a pressure tester, it has been mentioned that a old blood pressure tester squeeze bulb and gauge could be adapted for this purpose.

Also the cheap plastic MityVac normally used for just vacuum will easily make 10 psi through the port sicking out the top but there is no pressure gauge. You would have to adapt a Tee in the line with a low value pressure gauge. You can get clear plastic tubing at the hardware or farm store, black rubber at the auto parts, or use yellow Tygon from the chainsaw store. The farm stores usually have the low value pressure gauges and tees you can get at either of these stores.

MityVac makes a nice all metal combination pressure/vacuum with a combination gauge but at $70 - is not very cost effective for occasional use.

Remember that actually all you need to check the carb is 10 psi. And even to test a crankcase you only need 1/2 atmosphere pressure and vacuum. That would be 7 psi pressure and 14" vacuum. That would be close to +/- 50 KPa for you metric guys.

Some people use their air compressor with a regulator from the farm store.