My friend's mom gave me an old Craftsman mower with a bent crank. Even though I have like 4 other motors in the shed in various states of repair, I just bolted an old adapter to it and beat it with a 2 lb lump hammer until it looked straight, didn't even damage the seal. I also had to weld some fender washers to the deck because the original holes were tore up from the vibration. Been running that mower for 2 years now, although I'm getting tired of dumping the bag every 2 minutes since the blade is not for mulching.
great vid, this gives me the confidences to take one I have has suspected with the similar fault. I like to tinker into things as a hobby. Always been that way
This particular motor is my favorite to work on and never had one lick me till recently. Now I suspect the cam. I just never had one go bad before. Looking forward to making my money back on it.
Cool! I wonder if there is any way of checking plastic gear cam lobe alignment on that plastic camshaft other than checking to see both valves are closed at TDC....If Briggs is gonna use cheap pieces like that cam, the least they can do is make it easy for the tech to inspect for proper alignment visually. Interesting about the plastic crank gear as well...I wonder if that is just used on the cheaper mowers, or if it was a materials change on all similar engines....Hopefully the change was from plastic back to a metal crank gear....
From the donor motor you had a plastic drive gear and plastic cam gear. In the repaired motor you will have a metal drive gear meshed with a plastic cam gear. I wonder if that combination is what caused the original cam gear to fail?
Heya Bruce! Have you ever attempted to straiten the crank shafts and replace the oil seal? It's actually what reputable repair shops do all the time and there is a way to do it without the expensive jig that you see other channels using. I can't count how many I've straitened and they've never come back for any ill effects from the straitening. Just a thought for a future bent crank that you may try. Cheers my Northern Friend! Excellent donor parts for sure! Zip~
Dear Dr Pender, hope your patient does well after its timing gear brain surgery. I am looking forward to part two showing its full recovery. Is there any truth to the rumor that you are developing a procedure to do this operation endoscopically via the spark plug hole? If so could I suggest that you call it the Pender for Bender procedure. ;-) -1 down here this morning. No T shirts for us. Regards Dr Prickle
We will do some research on said item mentioned in the memo. There could be several million dollars need to do the research. Well +30 here today. Western Canada. You are obviously south of the equator.
Hello from the UK looking for some advice please! i have a briggs 3.5hp lawnmower wont start done everything possible plug .coil ,valves.keyway , have 80lbs compression, know leakdown ,good spark dead mans lead on & off,clean carb new diaphragms, wont fire with easystart, carb on carb off, new plug just get a small puff back through the intake port camshaft is okay & timing any ideas please or is it ready for the tip thanks great videos
It was enough. Good idea. What I did was I have an outlet on the compressor upstream of the regulator and I move the reel to that. It seemed to help a lot. I like the idea of a tank or "pig" at the "field end". Thanks
Most likely I would have stayed with the original (metal) drive gear which goes against my rearing, which is the plastic gears were meshed together and should be kept together because, being used, there would be additional friction and wear for the unmatched ones to mesh.
So it's been 5 years since I watched your video. I am in a pickle on another small engine. I have looked at your marks on your engine and notice that the piston is not at TDC. The recoil was ripping out of my hands even though I knew the timing was correct. I had removed the engine again and left it apart on the bench until I figure something out.@@BrucesShop
