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Hi forum, I would like to know where I can find the next spare part, is a fan from a 4 stroke trimmer, it is a Craftsman, but built from MTD, this is the model number: 316.731971. This fan comes with the shortblock, and I do not want to buy a complete shortblock only for this fan. I found the...

Hi, Ok I appreciate all your answers, my question in specific form is: What is the aluminium alloy of the housing of a engine of a lawn? For example, a modern 2014 Briggs and Stratton engine, like the next model 725ex Mow N Stow and those models do not have steel sleeve. Thanks!

Hi forum, hope someone can give a hint about what is the aluminium alloy for the housing for a walk-behind mower, specially for those that do not have steel sleeve. I guess that the common alloy for these issues is A380, but I am not sure. Thanks!!

To fit in most common trimmers and chainsaws, size/diameter for the the same +- commercial chainsaws and trimmers (25 to 45 CC engines)... I guess that the parameters of size/diameter are only to specify the parameters of the heath treatment, indeed the time and depends on the Al alloy. I am...

Hi forum, I just want to know a better opinion, I want to manufacture a piston and a piston ring, I know that the best alloys for this are Al 4032 or 2618, and rings made with grey cast iron. But sometimes is hard to find these Al alloys, I need another opinion or even with which alloy are made...

Hola! Muchas gracias, ya ni me acordaba de este post, pero me hace mucho sentido lo que dices, ya he revisado un caso que tengo ahí, y con unas pruebas al combustible ya se ve que los componentes de la gasolina ya se estaban separando por ser muy viejo, el filtro muy sucio como con aceite y...

The ignition coil do not send the spark, the cylinder, ring and piston are fine, I just want to know if between ignition coils have differences, for power of the spark, for this and that ...

Hi, I just want to know if the ignition coils are different between them. I have two MTD trimmers, one with a 25cc engine and the other with a 31cc engine, the ignition coil of the second just stop working. And I used the ingntion coil of the first but do not work, the cylinder have the...

No doubt, grey cast iron for the sleeve... Thanks so much, both !!! :cheers:

Ok, perfect I understand, and yes I guess Wikipedia have valuable info, but sometimes, just sometimes. Ok I will buy a grey cast iron pipe and try it... I have to ask, cast iron piston rings have no problem with cast iron sleeve, that is right?

Ok, well I have to say, that is a great work, so you bought a cast iron pipe and machine that cylinder, Did you have to temper the piece? I visited the website and it is fine but as you said, one = to expensive. Thanks so much fot the picture.

It is a Craftsman I do not know the model, but it is old, the cylinders have more or less the same shape right? older or newer

Hi forum, I have a little doubt, a friend have a very old chainsaw from its father, and he want to preserve the 2-S cylinder, I mean the original, but he re-plated the cylinder two times and with a very poor result, so... here I am, when no one ask me about the topic, I talked, and I recommended...

Method applied. Thanks !

Update Hi forum, I post a picture about how the intake pipe is shown at the end of the exercise, I find this method (braze) very useful because is cheap and powerful in 15 minutes everybody can weld everything. The intake pipe is strong as new, even I hit it with the plastic hammer and then...

Yes I have, but even a junk tecumseh engine is hard to find here but many brands start to use B&S and Honda motors, but the spare parts of honda are very very expensive here, like if you need to buy a valve, better buy a new B&S motor jeje

Arrowhead, really I appreciate so much your offer, the motor is horizontal you can see a pic of the intake pipe in the first post of this thread, but I found DuraFix welding rods here in the next city, I will try them, and if the process is success, I will notify you, either if not I take your...

Thanks!!

Thank you so much, so I will try them, because really I find a little bit difficult welding the part. :clap:

The problem is that I can not find tecumseh parts here, no one have and are very hard to find them, so that is why I'm asking about welding... somehow I hate tecumseh jeje Thanks!