Ryobi 725R Gas Trimmer

	Ryobi 725R Gas Trimmer

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Subject

Author

Date

Ryobi 725R Gas Trimmer

kc_wallace

07-03-2006

Re: Ryobi 725R Gas Trimmer

m Ransley

07-03-2006

Re: Ryobi 725R Gas Trimmer

John Lawrence

07-03-2006

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Posted by on July 3, 2006, 1:43 am

I ran my gas trimmer by accident without pouring in my pre-mix of 32:1
gas to oil. The engine seized after about 30 minutes. Not sure if I
have to buy both a new piston/rod and cylinder assembly (about $50
total cost) or if I should just run out and buy a new one. Is there a
chance that more things are broken that what meets the eye such as
where the piston rod connects with the fly wheel.

Here is what I've done so far: when I pulled the cord, it didn't budge
an inch, so I took it apart and got access to the piston. Even with
coating the piston with oil, it doesn't want to move very smoothly
within the chamber. I'm guessing one or the other is warped. Physical
examination with the naked eye however doesn't show any such signs of
warpage nor any scoring so I'm not sure. Is warpage measured in
milimeters so that it is not distinguishable by just looking?

Anyone wanting to own up to a similar occurance would be most welcome.

Posted by m Ransley on July 3, 2006, 7:04 am

If you cant get it to pull smoothly after coating it with oil its trash
and not worth the fix, you also damaged the bearings and the crankshaft.
Put it together and try to run it for awhile, if it doesnt perform buy
another one and keep this unit for spare parts.

Posted by John Lawrence on July 3, 2006, 7:22 am

Good advice. The cost of a complete rebuild would be more that the cost of a
new unit.

> If you cant get it to pull smoothly after coating it with oil its trash

> and not worth the fix, you also damaged the bearings and the crankshaft.

> Put it together and try to run it for awhile, if it doesnt perform buy

> another one and keep this unit for spare parts.

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