I bought an 87 ex500 in July and had clean out the carbs. It was a lot simplier than I thought and had no problem doing it. This was the first time I have ever done engine work other than the typical oil change or spark plug. Just follow the repair manual and you will be fine.

 

only one got rebuilt? ive learned to go ahead and do them all while your there. i learned the hard way.

 

How can you say that on the information given?

A U/S battery or regulator/rectifier are more likely. Carry out basic checks with a multimeter. Look for about 13.5V across the battery with the bike at around 5K rpm. If you don't get it, then suspect the regulator before the alternator. Alternator can be checked by disconnecting the three output wires and measuring the a.c (NOT d.c.) voltage across each pair. Don't know the figure for this bike, but expect about 50 - 60 Vac at around 5K rpm. If any one pair is significantly different, then you can suspect the generator.

The carb issue (hesitation ?) could be a plug problem Replace them all as a first step, Then check the fuel filter and check that the jets aren't gummed up. After that, check carb synchronistaion with a set of vacum guages. The idea is to tune the degree of opening of each carb so that it matches the cylinder it's feeding. All carbs hould show the same depression on the guages. If one carb has been removed from the stack and rebuilt, then synchronisation is probably out, but may not be the cause of the hesitation. A low battery not supplying sufficient power for the ignition is a likely suspect.

Rob

 

i have already purchased a new magneto for my bike so i am putting that in today..i am also going to clean my carbs today and we will see what happens.

 

rebuild all 4.
A carb is a carb. Just smaller on a bike.
Save some $$$ and time, take the carbs off and let the shop rebuild 'em.

 

What education is there in that quote?