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Unread 06-17-2013, 01:36 PM   #1
Budke
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2004 TJ Wrangler 
 
Join Date: Aug 2009
Location: Orange Park, FL
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need help with this old moped/scooter

So I got this old 1990 tomos bullet scooter with the a3 motor and can't get it to start. I got this like like 3-4 years ago and it didn't start so I tried to fix it and couldn't. Had all the wires taken apart and forgot how they went. Can't find a wiring diagram anywhere either. Anyone know anything about these and can help?





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Unread 06-17-2013, 03:05 PM   #2
Budke
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2004 TJ Wrangler 
 
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Found out all the fuel lines were clogged so thats why we weren't getting fuel, cleaned out all of those, haven't figured out how to take the carb off yet though to clean it out.
But still haven't figured out the no spark issue yet.
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Unread 06-17-2013, 08:01 PM   #3
JeepComanche89
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1989 MJ Comanche 
 
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Cant really offer any help, im new to bikes. But that is super cool. I picked up a little project myself.

image-1547716428.jpg
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Unread 06-17-2013, 08:26 PM   #4
TjinTopeka
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2002 WJ 
 
Join Date: May 2010
Location: Topeka, Ks
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http://www.myronsmopeds.com/category/service/

Some good moped info. Weird how you have to kick the pedal back to start the bike. I had an old Sachs similar to what you have and you just pedaled up to speed and let the clutch out. Although a kickstart would have been cool.
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Unread 06-17-2013, 10:42 PM   #5
Budke
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that had some good info but nothing moped specific like I'm looking for.
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Unread 06-18-2013, 06:45 AM   #6
vadslram
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1990 YJ Wrangler 
 
Join Date: Jan 2006
Location: VA Beach
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http://www.tomosusa.com/pages/modellen

Contact them, They should be able to get you schematics and parts.
Those were fairly basic engines. Run through the whole fuel system first to clean out everything. Make sure the electric is solid also. You should only need a wire from the plug to the coil and from the coil to the exciter. the others are for lighting and shutting it off(grounding) if the shut off wire is pinched somewhere it will never start.
BE VERY CAREFUL on the carb. The aluminum is brittle and prone to corroding the metering screws. I've broken quite a few on sleds and once you break it you might as well just throw it away and buy a new one because they will never work right after.
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Unread 06-18-2013, 11:51 AM   #7
Budke
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I'll give that a try. I already cleaned out the fuel system, just need a clean out the tank, from what I've seen the electrics look good but i haven't pulled all the wires out to check them.
I do need the take the carb apart though and clean it. The petcock and fuel line were clogged with gunk so I'm pretty sure the carb is clogged as well.
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Unread 06-18-2013, 12:54 PM   #8
bono426
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2005 LJ Wrangler 
 
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ahh, i had one of these! Take off the carb and clean the hell out of it. Also, check the points and see if you're getting spark

Spray the carb with some ether and see if you can get it to run off that.
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