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Straighten A Valve Head


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#1 TerryD OFFLINE  

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Posted August 21, 2013 - 12:23 AM

Looks like my MF10 swallowed a choke plate scre and it hit the exhaust valve. I see a small dent in the top of it. Is there an easy way to straighten a valve that was knocked off of square? A new valve is $68.

Thanks!
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#2 KC9KAS OFFLINE  

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Posted August 21, 2013 - 04:05 AM

I think you would be time & money ahead to just replace the valve.


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#3 superaben OFFLINE  

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Posted August 21, 2013 - 06:17 AM

KC9KAS is right: you can technically heat up the valve and bend it, but you will loose the material strength of it.  $69 now is better than later having to pull the motor apart again. 

 

Ben W.


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#4 TerryD OFFLINE  

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Posted August 21, 2013 - 06:44 AM

Okay. That's what I needed to know.
Thanks.

#5 LilysDad OFFLINE  

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Posted August 21, 2013 - 06:53 AM

What make and model is that engine?



#6 TerryD OFFLINE  

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Posted August 21, 2013 - 06:56 AM

Tecumseh HH100-115097c, 10hp.

Edited by TerryD, August 21, 2013 - 06:57 AM.


#7 Guest_gravely-power_*

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Posted August 21, 2013 - 07:35 AM

Guys are right. Do NOT straighten a valve.


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#8 Alc OFFLINE  

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Posted August 21, 2013 - 10:39 AM

I wonder how a little screw could have bent the exhaut valve ? I'm thinking this is a flat head engine right  ?  Has this happened to anyone before ?



#9 Guest_gravely-power_*

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Posted August 21, 2013 - 11:47 AM

I wonder how a little screw could have bent the exhaut valve ? I'm thinking this is a flat head engine right  ?  Has this happened to anyone before ?

Yup, the screw got caught between the top of the valve and the head.


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#10 Alc ONLINE  

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Posted August 21, 2013 - 12:48 PM

Oh man that stinks ! Must have just caught just the right spot on the valve  ?


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#11 Guest_gravely-power_*

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Posted August 21, 2013 - 01:28 PM

Oh man that stinks ! Must have just caught just the right spot on the valve  ?

Yeah, I couldn't believe it.


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#12 TerryD OFFLINE  

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Posted August 21, 2013 - 02:34 PM

Okay, I've bit the bullet and ordered a new exhaust valve. Should be here in a couple day. On the upside, my carb is back from Carb Rescue!

#13 KC9KAS ONLINE  

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Posted August 21, 2013 - 04:43 PM

Okay, I've bit the bullet and ordered a new exhaust valve. Should be here in a couple day. On the upside, my carb is back from Carb Rescue!

You will be much happier with the results of a new valve!

Be sure to "lap" it when you install it.



#14 TerryD OFFLINE  

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Posted August 21, 2013 - 04:48 PM

Definitely have to lap and adjust clearance. I am hoping for a world of difference when it runs.

#15 olcowhand OFFLINE  

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Posted August 21, 2013 - 04:50 PM

Had it happen to me once, and to 3 others I know.  Luckily none bent the valves though.






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