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YFM 100 bore size

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Old 02-12-2013, 10:35 AM
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Default YFM 100 bore size

I need to know the standard bore size of a 1987 Yamaha YFM100T Champ 100. Thanks.
 
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Old 02-12-2013, 12:08 PM
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Old 02-13-2013, 10:02 AM
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I was a state certified master motorcycle mechanic and a owner of a state register and certified aftermarket repair facility for 10 years. I have been repairing restoring and customizing motorcycles of all makes and models for 40 years with all machining repair work done in my self sufficient shop by myself. I was always there to help fellow riders with questions or answers pertaining to repairs or diagnosis on their rides.
I posted a question asking for the standard bore size of a YFM100, and of course the only reply was one wanting to sell me a manual.
It's sad that you have to pay someone to ask a question such as this. If I had a manual available on this model I would be glad to have looked it up and answered their question at no cost. I thought that was what these forums were for, to help out fellow riders, but evidently times have changed.
For the people who have a manual and would have helped out with my question I thank you. To those of you who would only have wanted to sell me a manual it goes to show me that making a buck is more important than helping a fellow enthusiast.
Maybe, just maybe, some of these forums and it's subscibers will get back to the main intention of helping people with questions and answers.
 
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Old 02-13-2013, 10:23 AM
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Sorry,Did not not know all of that.

Did I say you had to buy it?

Pretty uncommon Kids ATV and not being made since 1991 and I do not sell manuals.I just found you a link to one (Big Mistake I now find out).
But for $15 not only would you know the bore and stroke but also how to make it a pile of bolts on the floor and put it back together again, not bad for $15 which is what a afternoon 12 pack of beer cost nowadays. I amazed there is still a manual in print for that uncommon ATV.
$15! Get the Plastic out. Beats staring at it and scratching your head.

It sure was not a $70 shop manual like I bought once.

Anybody who can steer me to a shop manual for a pityful $15 I would take it gladly..
 
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Old 04-15-2021, 10:08 AM
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Thumbs up User Manual YFM100T

The bore size is in the manual.
https://www.yamaha-dealers.ca/ymca/w.../?locale=en_CA
 
Attached Files
File Type: pdf
YFM100T 2HX2819970.pdf (8.68 MB, 108 views)
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