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Joined: Jan 2010
Posts: 234
Apprentice level 3
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Hi everyone, 1st post so here goes! I have been given a tilt a cut by the grandparents in law ( an old one which worked for a short period). After 1 long edging session the edger seemed to just stop suddenly.  I tried to restart the bugger but to no avail. The edger will turn over a few times after i leave the darn thing to 'rest' for a short while after which it again stops abruptly (keeps going for 2 secs or so). I have tinkered with the carby airflow (its the model with the 'slow-fast' dial) and have found the spot where the engine will turn over for 1-2 secs every time i pull start it, but it just does not seem to want to keep going. Checked the spark plug and it is good, Have also checked and cleaned the decompressor as it was a bit of a pain to start the mower (this also helped with the starting but again, does not want to keep going). Anyone with any clues? ( i hope the engine itsself is not stuffed  )
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Joe Carroll
Unregistered
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How does the side of the piston look if you remove the muffler and look down the exhaust port?
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Joined: Jan 2010
Posts: 234
Apprentice level 3
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ill have a look and post this afternoon.
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Joined: Jul 2005
Posts: 6,362 Likes: 10
Administrator - Master Technician
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Hi Johno123, and a big warm welcome to the forum.  It's great to have you aboard as we all love to learn new things and tinker here.  Johno, could you let us know when you post, whether your machine is an early machine (Series 80) full-crank engine or the later half-crank "Powertorque" engine? Once again 
Please do not PM me asking for support. Please post your questions in the appropriate forums, as the replies it may receive may help all members, not just the individual member. Kindest Regards, Darryl
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Joined: Jan 2009
Posts: 6,926 Likes: 10
Pushrod Honda preferrer
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There are two generic causes that might produce your symptoms. The first is that the engine is running on pure petrol rather than 2-stroke fuel, and consequently it keeps seizing up then releasing as it cools off. If that is happening, the outside of the piston is likely to show signs of distress. Hence Joe's initial question. The second generic cause is that the engine is cutting out rather than seizing, which would probably be due to either temporarily lean mixture, or an intermittent ignition fault. It would be a bad idea to assume the second generic cause and try to find an engine fault, if it is really the first generic cause: every attempt to start the engine without oil in the fuel would do additional damage to the piston, rings and bore. Hence Joe (as always) has given excellent advice. The first thing you need to do is eliminate the possibility that the first generic cause applies, by inspecting the outside of the piston.
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Joined: Jan 2010
Posts: 234
Apprentice level 3
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re: machine dating, im not really sure how to tell the difference between an early series and a late series, is there anything that would give it away? As far as fuel, i have been running it pre mixed so i know that i have not been running it without oil, but who knows what the previous owner did  I still have not checked the piston via the exhaust port (but will do tomorrow morning). would a pic help you guys out or will signs of distress be obvious to even a layman as myself? again, thanks for all the help guys!
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Joined: Jan 2009
Posts: 6,926 Likes: 10
Pushrod Honda preferrer
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A picture is very desirable - not only will it tell Joe what he needs to know, but it will be useful to other people who use this forum to illustrate what all the discussion is about.
A damaged piston can affect compression, including crankcase compression, making the engine run badly and be hard to start.
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Joe Carroll
Unregistered
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The first thing I do when scrapping any victa 2 stroke is remove tyhe muffler for the exact reason grumpy describes above, if the piston is only a little scuffed and browned, I keep the motor, any sign of a gouge and it goes straight to the wheelie bin after everything is stripped.
I had one that had been running without oil to the point where the rings had been ground into the piston and the pistons alloy melted over the top of te rings, not a hope in hell of fixing that one.
after initial internal condition of the block can be identified I would be pointing my finger at maybe a blocked jet or depending on the age of the machine maybe a bad spark.
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Joined: Jan 2010
Posts: 234
Apprentice level 3
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sorry bout the late reply guys, but i guess better late then never! these are the best pics i could do of the piston. [img] http://yfrog.com/j1pistonej[/img] Im gonna place my intelligence out there and state that the piston looks ok? (this is a learning curve for me guys but i want to know how to do this right!) Would love to know where do i go from here. 
Last edited by Johno123; 09/01/10 04:32 PM.
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Joined: Jan 2010
Posts: 234
Apprentice level 3
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opps, forgot to mention, i also had a look at the 'back' of the piston (the section before the piston rings) and they looked smooth as a babys bum. (i had some pictures but they came out awful blurry so i did not include them)
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Joe Carroll
Unregistered
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OK, I would be looking more ar a carby blockage then.
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Joined: Jan 2010
Posts: 234
Apprentice level 3
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time to pull it apart and see! ill report how it all goes once i give the carby a cleanout.
thanks for the help Joe!
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Joined: Jul 2005
Posts: 6,362 Likes: 10
Administrator - Master Technician
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Hi Johno, can you please post a pic of the whole machine, I am still interested in what type of engine is fitted. 
Please do not PM me asking for support. Please post your questions in the appropriate forums, as the replies it may receive may help all members, not just the individual member. Kindest Regards, Darryl
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Joined: Jan 2010
Posts: 234
Apprentice level 3
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will try to do so tomorrow deejay (sorry bout that!)
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Joined: Jan 2010
Posts: 234
Apprentice level 3
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heres a pic of the unit, as requested.
Last edited by Bruce; 11/01/10 11:47 PM. Reason: Corrected Link
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Joined: Jul 2005
Posts: 6,362 Likes: 10
Administrator - Master Technician
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Hi Johno, thanks for posting the pic, mate. It is the earlier model, which has the full crank engine. This engine has a full-crankshaft rather than the half-crankshaft of the later "Powertorque" models.... Thanks Bruce and Joe for giving me the heads-up. I had it dead wrong....I forgot about the full-crank gear start engine....Oops!!  It must be the 45 degree temperature here yesterday!! 
Last edited by Deejay; 13/01/10 12:45 AM. Reason: Corrected my mistake
Please do not PM me asking for support. Please post your questions in the appropriate forums, as the replies it may receive may help all members, not just the individual member. Kindest Regards, Darryl
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Joined: Jan 2010
Posts: 234
Apprentice level 3
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just so i know how to recognize it myself, what am i looking for when i am trying to find out whether the engine is a full crank or half crank?
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Joe Carroll
Unregistered
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That one is a full crank, one of the last of them 
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Joined: Jan 2010
Posts: 234
Apprentice level 3
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opps, full crank?
Darryl and Joe, you don't seem to agree on whether it is a full or half crank?
im guessing its a good thing that its a full crank? (if it is indeed).
I have tried to google up the difference between a full and half crank and what it means but i am getting nowhere, can anyone point me in the right direction?
thanks!
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Joined: Dec 1999
Posts: 5,384 Likes: 34
Repair Junkie
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opps, full crank?
Darryl and Joe, you don't seem to agree on whether it is a full or half crank?
im guessing its a good thing that its a full crank? (if it is indeed).
I have tried to google up the difference between a full and half crank and what it means but I am getting nowhere, can anyone point me in the right direction?
thanks! Johno123 it is defiantly a full crank victa gear start engine. If it isn't I will give you a $100 credit to use in the store to buy whatever you want.
Regards, ![[Linked Image]](https://www.outdoorking-forum.com.au/forum/images/members/mower-monsterw.jpg) Bruce Please do not PM me asking for support. Post on the forums as it helps all members not just the individual.
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