Quote:
Originally Posted by krat
Anyone ever heard of a startup procedure?
We are dealing with a guy that knows nothing about motorcycles or their engines and you have him dealing with valve lash and compression and crap with no real bearing on a bike with 50 miles, or even 900 miles, that is 6 years old! You guys are skipping steps 1,2,3 and going directly to step 13.
The last thing the previous rider should have done when he turned off the bike was close the fuel valve. So the first thing you check is the fuel petcock. You then turn on the ignition and then check the kill switch. Any of those things will cause a "crank, no start" situation.
The next thing you would suspect on a bike that is 6 years old and has 50 miles is a clogged carb.
No one said a thing about pulling the plug and checking for spark.
No one said check the air box for a rats nest, or the muffler for the same.
Like post #2 said; fuel, spark, air.
Compression and valves have to be way off for one of these little 125cc flat engines to not run. Bad fuel supply, no spark or clogged air flow will stop them dead immediately.
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This times 1 Million. OP responds with "what parts deal with compression" and they want him to be messing around with ignition timing and valve clearances?!
Price, so as krat mentioned...check to make sure nothing small and furry made it's home inside the airbox or muffler. Make sure fuel is turned on and flowing.
Then maybe pull the spark plug and plug it back into the wire, hold the threads of the plug against the metal engine and crank it, see if it sparks (or sparks YOU lol).
I'm willing to bet dollars to donuts that the carburetor is clogged up from sitting. If so, go to Youtube and start watching carburetor cleaning and removal vids.
You're going to have to learn some stuff along the way here, but eventually, you should get it.