The JUNKIEST MOWERS I've Ever Seen! ...can we FIX them?

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Now comes the two trashiest, junkiest mowers I've ever gotten off the curb. Both are Troy-Bilt. One has severe deck rot and a non-running engine. The other has an engine that is skipping timing. The cam gear seems to have a mind of its own and skips timing inexplicably. Can we fix either of these mowers? Can we fix BOTH? Stay tuned until the end of the video to find out.
#repair #restoration #mechanic
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Опубликовано:

12 сен 2023

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Комментарии : 68

@Fixologist1

NOTE: In the video, I assume the timing of the cam gear and timing gear has gotten off; however, as many keen viewers have pointed out, the timing ratio between those two gears is 2:1. This being a 4-stroke engine, that stands to reason, as the pison has to travel up and down 4x per cycle of the cam gear. In a 2-stroke, the ratio would be 1:1. So the timing being off by 180 degrees means the timing was being thrown off elsewhere. In this case, I now believe the flywheel key had probably sheared off and the firing time was shifting as I pulled the starter cord.

@brainndamage

The cam timing was good when you took it apart. If you rotated the crank 360 degrees you would have seen the two marks align. You can see the cam was 180 degrees off, but that's correct too because they're geared 2:1 so there are actually two correct timing positions for the cam exactly 180 degrees apart. The problem was more likely a rusty valve not seating which is what that backfire through the intake was, actually leaking compression. The other possibility being ignition timing due to a sheared flywheel key. You know that if you have lubricated threads and are torqueing to a spec for a dry thread, you need to only torque to 70% (about 30% less) or you will overtighten the bolt.

@jeffblackwell5493

Brad thanks for including everything successes and failures. Many Tubers don't do that so those of us that fail think something is wrong with us.

@kevinsands6769

First thing you check when the cord wants to rip out of your hand is the timing pin in the top of the flywheel. It's a 10 minute fix.

@joehatch1602

Brad you are so right about that heat in the Midwest. I'm originally from California and couple years ago moved to Oklahoma. Its so hot and humid here compared to California north coast. At least gas and housing is affordable around here but I do miss that California coast weather.

@paultopolski1978

Hey Brad, you might want to look into investing in some Heli coils to fix the stripped threads. It beats junking an engine because you have a stripped thread. You can pick up an 8MM Heli coil kit for around 35 bucks. This includes the insertion tool and tap, sometimes even the correct drill bit. When you run out of the inserts provide all you need to do is buy more inserts for a few dollars. It only takes a few minutes to repair and the repaired threads are stronger than the originals. They work especially good in aluminum. FYI, Heli coil is a brand name, there are many different manufacturers of thread inserts.

@Jonathan-tn7id

Love the fact that’s it’s some late night mower pickup as if it’s a taboo art of mower hookery 😅

@phil36135

Good job, you had a lot of work on that one.

@phil36135

Very nice work, it looks and runs like a new mower. The engine seems like it has not been ran very much. I would save that trashed motor, if nothing else they are lots if parts nuts and bolts. And it probably still fixable if parts are affordable. One more thing, these gas powered mowers and equipment may be hard to come by in the not so distant future. thanks again for the videos and giving this equipment another life.

@James-fu8fj 21 день назад

Brad, you need to check the keyway under the on the flywheel first at your timing along with the cam gear too, but I would check the flywheel keyway first

@BigEightiesNewWave

Welcome to the new era of plastic gears, even plastic camshafts.

@waynestefinashen239

A lengthy one but enjoyed your anguish. I believe there was nothing wrong but would have checked the flywheel key first. Additionally it could have been a stuck valve but the engine swap was the way to go from the start.

@paulcroce7303

Great vid,you are relentless

@KaelynDreyer

The key is broken. It shouldn’t be a two piece short key.

@moontheloon1969

The key on the timing gear is called a " woodrough key" :)

@RyeOnHam

I've worked on a few jacked up engines. Toss the good parts on the spares pile and the bad parts in the scrap pile. Aluminum pays pretty well. Really annoying when people hide problems, even on free or 'junk' mowers. Most of the time around here, the Junk ones are just small problems.