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#2268307 - 05/22/11 07:06 PM Stripped Thread on Honda HRX217HXA Block
amleeling Offline


Registered: 05/18/11
Posts: 5
Loc: Omaha, NE
Tonight I was adjusting the idle speed on my HRX217HXA because on low speed it was way too low. I have a Sendec hour meter / rpm guage and it was idling in slow at about 1200 RPM. It was hard to get in even with a longer screwdriver to adjust the carb but I got that dialed in perfect and only burned my finger once as the mower was up to operating temps. In the process, I knocked the breather hose off the back of the air cleaner housing and could not get it back on. I had to loosen the bolts for the air cleaner housing, and the throttle control bracket in order to get enough room to put the hose back on. When I tightened the bolts back down, I followed the torque spec per the shop manual I have for the mower, which is 7.2 ft lbs. All 3 inside the air cleaner tightened down normally to spec, but the one below decided to strip out. It happened so fast it was too late to "stop". The bolt will still get "snug" but definately may work loose.

After saying a few choice words, I mowed the lawn and put it away. It's got 72.2 hours on the mower now, it's a 2007 model.

I'm a very handy guy, but I'm kind of worried that this won't be an easy fix. Has anyone ever used these Helicoil repair kits? If so, any tips?

My other thought would be to just put some loc tight on the thread and get it "snug", and hopefully it won't work out again.

I have a feeling it stripped out because the block was hot and the aluminum was softer. I should have waited for it to cool off before torquing it I guess frown

Andrew

[img:left]https://docs.google.com/leaf?id=0B_RfvYn...list&num=50[/img]
[img:left]https://docs.google.com/leaf?id=0B_RfvYn...list&num=50[/img]
[img:left]https://docs.google.com/leaf?id=0B_RfvYn...list&num=50[/img]
[img:left]https://docs.google.com/leaf?id=0B_RfvYn...list&num=50[/img]


Edited by amleeling (05/22/11 07:11 PM)
_________________________
2007 Honda HRX217HXA - 71.3 hours Sendec Hour Meter
2007 Honda HHT25S
Genuine Honda Power Equipment Oil
Premium Fuel with Stabil

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#2268311 - 05/22/11 07:10 PM Re: Stripped Thread on Honda HRX217HXA Block [Re: amleeling]
mrichards Offline


Registered: 10/11/09
Posts: 69
Loc: Dundee , Michigan
Helicoils are fairly easy to use, thats the way I would do it to ensure it won't come loose. Just buy the kit and use the drill bit and tap that are in it and you shouldn't have any problems.
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14' Silverado 44k 4.3 v6
12' Chrysler T&C 82k 3.6 V6

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#2268321 - 05/22/11 07:21 PM Re: Stripped Thread on Honda HRX217HXA Block [Re: amleeling]
rpn453 Offline


Registered: 11/06/02
Posts: 4844
Loc: Saskatchewan
Heli-coils work great. If you're capable of tapping a thread, you can use one.
_________________________
2004 Mazda3 GT Hatch 75k

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#2268323 - 05/22/11 07:22 PM Re: Stripped Thread on Honda HRX217HXA Block [Re: amleeling]
Trav Offline


Registered: 11/20/06
Posts: 16433
Loc: MA, Mittelfranken.de
The Fix-A-Thred kits at AA work well and cost $20.
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ASE L1, Master. Deutsch Meisterbrief.

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#2268359 - 05/22/11 08:07 PM Re: Stripped Thread on Honda HRX217HXA Block [Re: amleeling]
rpn453 Offline


Registered: 11/06/02
Posts: 4844
Loc: Saskatchewan
Originally Posted By: amleeling
I have a feeling it stripped out because the block was hot and the aluminum was softer. I should have waited for it to cool off before torquing it I guess frown


That may have been a factor. Aluminum also galls very easily if the threads are not lubricated, and they may have not been lubricated from the factory. Use some anti-seize on them in the future.
_________________________
2004 Mazda3 GT Hatch 75k

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#2268380 - 05/22/11 08:28 PM Re: Stripped Thread on Honda HRX217HXA Block [Re: amleeling]
Steve S Offline


Registered: 01/20/03
Posts: 18449
Loc: East of IGO
all of the above!!!
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Why do people post I want the best for my car,,, When there isn't anything that is the best on the car to begin with.

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#2268400 - 05/22/11 08:41 PM Re: Stripped Thread on Honda HRX217HXA Block [Re: amleeling]
amleeling Offline


Registered: 05/18/11
Posts: 5
Loc: Omaha, NE
Appreciate the feedback! One question - after I do the Heli-Coil, should I avoid tightening to torque spec? Not sure if that might be too risky even if I do it with some anti-sieze and when the block is cold.
_________________________
2007 Honda HRX217HXA - 71.3 hours Sendec Hour Meter
2007 Honda HHT25S
Genuine Honda Power Equipment Oil
Premium Fuel with Stabil

Top
#2268415 - 05/22/11 09:01 PM Re: Stripped Thread on Honda HRX217HXA Block [Re: amleeling]
Steve S Offline


Registered: 01/20/03
Posts: 18449
Loc: East of IGO
helicoil type repairs are stronger than original because the threaded area is greater . Use the original recommended torque compensating for the lube used on the threads . Aluminum is easy to strip. It just happens.
_________________________
Why do people post I want the best for my car,,, When there isn't anything that is the best on the car to begin with.

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#2268416 - 05/22/11 09:05 PM Re: Stripped Thread on Honda HRX217HXA Block [Re: amleeling]
amleeling Offline


Registered: 05/18/11
Posts: 5
Loc: Omaha, NE
Thanks! I'll post back once I get the parts, putting an order online now.
_________________________
2007 Honda HRX217HXA - 71.3 hours Sendec Hour Meter
2007 Honda HHT25S
Genuine Honda Power Equipment Oil
Premium Fuel with Stabil

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#2268435 - 05/22/11 09:25 PM Re: Stripped Thread on Honda HRX217HXA Block [Re: amleeling]
Steve S Offline


Registered: 01/20/03
Posts: 18449
Loc: East of IGO
How do you hook up the hr /tach? I have seen them at the lawn mower shop.
_________________________
Why do people post I want the best for my car,,, When there isn't anything that is the best on the car to begin with.

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#2268438 - 05/22/11 09:27 PM Re: Stripped Thread on Honda HRX217HXA Block [Re: amleeling]
Steve S Offline


Registered: 01/20/03
Posts: 18449
Loc: East of IGO
A late thought ft lbs or inch lbs.
_________________________
Why do people post I want the best for my car,,, When there isn't anything that is the best on the car to begin with.

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#2268449 - 05/22/11 09:37 PM Re: Stripped Thread on Honda HRX217HXA Block [Re: amleeling]
amleeling Offline


Registered: 05/18/11
Posts: 5
Loc: Omaha, NE
All torque values are ft lbs in the shop manual. The hour meter / tach has a single wire which runs down to wrap around the spark plug wire. I attached it to my control cover as pictured in my photos above with 3M heavy duty red double sided tape. (Didn't want to screw into the cover).

The meter shows engine RPM while the engine is running, and when it's off it displays the total operating hours.

Andrew
_________________________
2007 Honda HRX217HXA - 71.3 hours Sendec Hour Meter
2007 Honda HHT25S
Genuine Honda Power Equipment Oil
Premium Fuel with Stabil

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#2268502 - 05/22/11 10:58 PM Re: Stripped Thread on Honda HRX217HXA Block [Re: amleeling]
spackard Offline


Registered: 03/24/11
Posts: 1580
Loc: CA
What I've read is Helicoil works fine in iron or steel, while Time-Sert is better for Aluminum.
In limited practice I've had a Helicoil come out of Aluminum (it took Aluminum threads with it, looking like a coil or a spring). I haven't had problems using Time-Serts. Also, the Helicoil needs more depth than a Time-Sert does.

You can try a Helicoil first as it's cheaper, and, I think for the same size fastener if the Helicoil fails and you go to a Time-Sert you'll have to remove a little more metal. Just treat the Helicoil gently, and make sure you have enough depth for the entire Helicoil before you drill.

Also, that "happened so fast it was too late"? That's what Aluminum is like. It's crystalline. There's no elastic point before failure. I use a 1/4" torque wrench made by Utica for low torque like 7.2 lb-ft.

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#2268644 - 05/23/11 07:25 AM Re: Stripped Thread on Honda HRX217HXA Block [Re: amleeling]
Vikas Offline


Registered: 07/22/05
Posts: 11097
Loc: NorthEast
The picture does NOT look like a 1/4 inch lb-inch torque wrench. It is NEVER a good idea to use 3/8 inch ft-lb(5-80) at it lower end.

- Vikas

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#2272741 - 05/27/11 09:17 PM Re: Stripped Thread on Honda HRX217HXA Block [Re: amleeling]
amleeling Offline


Registered: 05/18/11
Posts: 5
Loc: Omaha, NE
I got the bolt hole fixed - was super easy :-) I just have to order new gaskets and a spacer that developed a crack. I know they say you should replace the gaskets everytime you remove the carb anyway, and it's a good thing I found the cracked spacer. It was probably letting a bit of air through it, which could of explained why my idle speed was all jacked up. Also it would have let unfiltered air into the engine, probably not much but still glad I caught this when I did. Will be another weekend without mowing, oh well smile

Links to pics below:

https://docs.google.com/leaf?id=0B_RfvYn...Jk&hl=en_US

https://docs.google.com/leaf?id=0B_RfvYn...kz&hl=en_US

https://docs.google.com/leaf?id=0B_RfvYn...Iw&hl=en_US

https://docs.google.com/leaf?id=0B_RfvYn...I2&hl=en_US

https://docs.google.com/leaf?id=0B_RfvYn...c3&hl=en_US

https://docs.google.com/leaf?id=0B_RfvYn...ky&hl=en_US

https://docs.google.com/leaf?id=0B_RfvYn...E1&hl=en_US

Andrew




Edited by amleeling (05/27/11 09:19 PM)
_________________________
2007 Honda HRX217HXA - 71.3 hours Sendec Hour Meter
2007 Honda HHT25S
Genuine Honda Power Equipment Oil
Premium Fuel with Stabil

Top
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