Working on a '50's model Onan power plant on a Chris Craft cruiser, about 30 years ago...
It had been sitting for years, owners wanted it running. So I got the engines running, fresh gas, many hours of tinkering.
Then went to the power plant. It was under the back seat, the controls were it the cabin at the front of the boat. I had the flame arrestor off (first mistake) can of either in hand, I went in the cabin and flipped the switch. Ran back, gave the motor a good shot of either, it started, and ran. All looked good...
About that time a huge spray of gasoline and oil shot out of the crankcase breather. It hit the bottom of the hard top and rained down, instantly soaking the entire back of the boat and myself. I instinctively put my hand over the carb to kill it, but it wouldn't die...
Every time it got down to cranking speed, the start circuit would kick in and it would try to recrank!
Now the switch is down in the cabin, I'm not going down there and get trapped. I've got solenoids and relays going crazy. This had the old style spark plug wires with just a fork on the plug, they're arcing.
I'm perched on the back of the boat, by myself in a deserted marina, hand over the carb, ready to jump... It's February...
I finally reached beside the power plant and started ripping wires until I pulled out the start wire.
By the grace of God it didn't explode!
The fuel pump diaphragm was bad, filed the crankcase with gasoline until it shot out the breather. What a mess, but I was grateful to be alive!
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Today's Featured Article - Hydraulics - Cylinder Anatomy - by Curtis von Fange. Let’s make one more addition to our series on hydraulics. I’ve noticed a few questions in the comment section that could pertain to hydraulic cylinders so I thought we could take a short look at this real workhorse of the circuit. Cylinders are the reason for the hydraulic circuit. They take the fluid power delivered from the pump and magically change it into mechanical power. There are many types of cylinders that one might run across on a farm scenario. Each one could take a chapter in
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