Crank Repair

[graygun]

Honda s.p. mower hit a hidden object and it got chewed on. Installed a new blade set but still vibrates. I've been looking into repair but no luck so far...have seen some of the redneck repairs on YT. :shock: :lol: Might have to scrap it or get another engine but thought I'd ask about repair options here. Mower was only used 2 or 3 seasons.

 

[Dave P.]

If you're able to do the labor ( it's pretty easy on Honda's ) you'll find most of their crankshafts
are not very expensive. If it is a model with a blade clutch you should also check those parts and
the blade hub.
Dave

 

[Acorn]

FWIW some mower shops have a jig to straighten a bent crank. Not saying I'd recommend it just sayin.

 

[graygun]

FWIW some mower shops have a jig to straighten a bent crank. Not saying I'd recommend it just sayin.

I was looking along this path...cheap,lol. I talked to a guy today who had one for Briggs and Stratton but he said Honda cranks would not work in it. He worked at a shop but did it at his home(liability issues).

 

[graygun]

If you're able to do the labor ( it's pretty easy on Honda's ) you'll find most of their crankshafts
are not very expensive. If it is a model with a blade clutch you should also check those parts and
the blade hub.
Dave

Thanks,I'll look into prices.

 

[akbluz]

I did a "Bubba" repair years ago after mowing over a metal rod which was not buried quite deep enough. The Briggs & Stratton engine crankshaft was bent. I talked to a guy at the mower repair shop and he said I could either (A) replace the motor, (B) replace the crankshaft, or (C) take a big sledge hammer to the bottom of the crankshaft with the engine laying sideways across my heavy truck bumper and try to straighten it out. Needless to say, I went with el cheapo plan C since I didn't have much to lose. After a couple of well placed blows with the big hammer it seemed to be a lot straighter as verified by pulling on the starting rope. I mounted the blade back on the "bare motor" and rotated the starting rope a couple of more times and the blade was turning really true. I put that mower back together and ran it for another 10 years. The lower shaft seal held oil with no leaks for all that time.
It worked once for me - but YMMV

 

[miniman]

FWIW some mower shops have a jig to straighten a bent crank. Not saying I'd recommend it just sayin.

yep 2 v blocks and a big brass hammer.

 

[CGDustDevil]

FWIW some mower shops have a jig to straighten a bent crank. Not saying I'd recommend it just sayin.

yep 2 v blocks and a big brass hammer.

That's what I'm talkin' about! lol And yeah, it works. You'll also need a dial indicator.

 

[graygun]

Check out this "gal" doing a crankshaft repair.

https://www.youtube.com/watch?v=KDES2USZd8U

 

[CLAYPOOL]

What about the "KEY" being messed up on the crank. Little Half Moon on one side - flat on the other..? Think like the end of your finger (Nail)...

 

[graygun]

The engine starts on one pull so the key is good but thanks for asking.

 

[coach]

You're not the only one, a big rock about the size of an oversize brick "jumped" out in front of my tractor as I was cutting between two bushes. No idea how it got there since I always cut there. I saw it coming about two feet away, but couldn't stop. I actually jammed my foot on the pedal like it was as brake. No brake on the machine only forward and reverse. In my defense this tractor is only a year old and my last tractor I had for twenty years did have a brake. The good news for me is it appears only a blade was bent although as I finished cutting the mower belt broke.

 

[pete44ru]

.

Mowing ? ? ?

PHEW ! You guys are making me tired, what with all this talk about actually working...... :mrgreen:



.

 

[vllyby]

I just inherited a Honda mower in same condition as yours. I found the bracket on the end of the shaft that holds the blade on was bent, not the crankshaft.

 

[graygun]

I have to remount the engine and check things down there.

 

[daveg.inkc]

What about the "KEY" being messed up on the crank. Little Half Moon on one side - flat on the other..? Think like the end of your finger (Nail)...

That's a Woodruff key