Ariens head gasket - Snowblower Forum : Snow Blower Forums
 
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post #1 of 8 Old 12-10-2016, 09:26 AM Thread Starter
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Ariens head gasket

Hi all,

Hope all is going well!

I have been working on a old Ariens 910002(H70) for the past couple of months and have had no real problems with it. I was adjusting the carb the other day anticipating some snow soon. I noticed when I had the carb cover off that the engine seems to be leaking gas around the head gasket on the carb side.

The engine has 63 psi when I compression tested it. I have no idea if the head is actually flat and not warped. So would I be better off using on OEM headgasket or using some permatex head gasket repair and forget about the gasket altogether?

Happy Saturday!

Dustin
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2005 MTD Yard Machine 26inch-8hp
1971 Arines-Sno-Thro-24in-7hp
2001 Craftsman-22"-5hp
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post #2 of 8 Old 12-10-2016, 09:50 AM
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I would try any new head gasket, OEM or aftermarket


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post #3 of 8 Old 12-10-2016, 09:54 AM
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Head Gaskets are Fairly Cheap. Most Repair Shops Stock them, or Buy one Online.
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post #4 of 8 Old 12-10-2016, 10:05 AM
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You can't substitute tube goo for a head gasket.

Why is gas coming out there? Shouldn't be. Float valve sticking open?

Either that or it's just shot. Remove head, resurface with some wet 220 grit on a piece of glass, clean clean clean then reassemble with new goods.


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post #5 of 8 Old 12-10-2016, 01:13 PM
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it's possible that the head bolt(s) are simply loose.

1st check the torque for each head bolt per the l-head service manual. If i recall, it's 200 inch-lbs (NOT TO BE CONFUSED WITH FOOT POUNDS!)

I'd still remove the head, clean-off the carbon from the head, piston and valves. Since you're this far, you may as well check / adjust valve clearances by removing the muffler, carb/intake & breather.

Before putting the head back on WITH A NEW HEAD GASKET, I recommend putting the head on a flat surface (like an old window or flat windshield) and checking for warpage by going around with your feeler gauge.

Then dress the head using a sheet of emery cloth and honing oil. The entire gasket surface should be scratched by the paper. (EDIT: Like yanmar recommended above )

Torque the head bolts in the correct order in 50 inch-lb increments.

Retorque the head bolts after a few heating/cooling cycles.


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post #6 of 8 Old 12-10-2016, 02:58 PM Thread Starter
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Thanks for the help!

Last week I noticed that the carb was leaking fuel while sitting so I took the carb off to re-seat the float and that solved the problem. I know I need to put on a new head gasket.

I found this one on Amazon:




It looks to be what I need.

Thanks Again!

Dustin

2005 MTD Yard Machine 26inch-8hp
1971 Arines-Sno-Thro-24in-7hp
2001 Craftsman-22"-5hp
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post #7 of 8 Old 12-11-2016, 10:33 AM
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Just be careful when removing head bolts. Sometimes they get corrosion it's hard tuning and one could snap off. Use plenty of spray lubricant.

New Jersey, Toro 8/24, Ariens 5/22, small engine repairs
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post #8 of 8 Old 12-12-2016, 05:17 PM Thread Starter
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Thanks everyone! I found that the carb float was not seating correctly and haven't had the problem since I set the float right.

2005 MTD Yard Machine 26inch-8hp
1971 Arines-Sno-Thro-24in-7hp
2001 Craftsman-22"-5hp
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