Does anyone know the difference between the 78 to 82 F100 engines and the later 80's F engines besides the type of carbs they use?
The F100's do take a different coil than the newer F models.
A friend brought me a model 7229 to work on and said it wouldn't start. It was getting spark and gas. It wouldn't even begin to fire with starting fluid.
So I checked compression and it read 0. I thought maybe the tester was not working so I checked compression on one of my Lawn Boys and it read about 90 psi.
So I took the engine off the deck and cracked it open and found out that the wrist pin needle bearings came apart and went everywhere. The top of the piston looked
like a pin cushion with six bearing sticking out. There was 1 bearing stuck in the spark plug by the electrode. One of the rings were broken and the piston and cylinder
were scored pretty good, so I don't think lawn boy will run again.
This 1979 engine looked just like the newer ones I have worked on and was just wondering if there was really any difference. I think they made F engines into the 90's.
Regards
Jerry
The F100's do take a different coil than the newer F models.
A friend brought me a model 7229 to work on and said it wouldn't start. It was getting spark and gas. It wouldn't even begin to fire with starting fluid.
So I checked compression and it read 0. I thought maybe the tester was not working so I checked compression on one of my Lawn Boys and it read about 90 psi.
So I took the engine off the deck and cracked it open and found out that the wrist pin needle bearings came apart and went everywhere. The top of the piston looked
like a pin cushion with six bearing sticking out. There was 1 bearing stuck in the spark plug by the electrode. One of the rings were broken and the piston and cylinder
were scored pretty good, so I don't think lawn boy will run again.
This 1979 engine looked just like the newer ones I have worked on and was just wondering if there was really any difference. I think they made F engines into the 90's.
Regards
Jerry