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50esl75B 2 problems

B

bootss

New member
This motor is new to me.There are 2 wires from exhaust cover purple/yellow stripe and solid purple laying in the bottom of the motor case not hooked up.Do not know what they are or where to put them.Also top cylinder does not fire at all,no spark.130# compression.I replaced coil and power pack.Any help is really appreciated at this point,thanks all.
bootss:cool:
 
Thanks faztbullet,
Motor runs well but only the bottom cyl.I'm going to pull flywheel next and check timer base,trigger and stator for burning. Not to sure how to run the tests in your link.thanks again.
bootss
 
There was a service bulletin showing how to disconnect that choke switch where uses on previous models. So not to worry about that. You probably are barking up the wrong tree with pulling the flywheel. Everything under there is active in firing BOTH cylinders, so if one is firing, both will, as far as those parts are concerned. Then you say you have replaced coil and power pack. Hey, there is nothing else to suspect. What are we missing here?
 
fdrgator said:
There was a service bulletin showing how to disconnect that choke switch where uses on previous models. So not to worry about that. You probably are barking up the wrong tree with pulling the flywheel. Everything under there is active in firing BOTH cylinders, so if one is firing, both will, as far as those parts are concerned. Then you say you have replaced coil and power pack. Hey, there is nothing else to suspect. What are we missing here?
Click to expand...

See the last step in post #2
 
fdrgator said:
There was a service bulletin showing how to disconnect that choke switch where uses on previous models. So not to worry about that. You probably are barking up the wrong tree with pulling the flywheel. Everything under there is active in firing BOTH cylinders, so if one is firing, both will, as far as those parts are concerned. Then you say you have replaced coil and power pack. Hey, there is nothing else to suspect. What are we missing here?
Click to expand...

No fire on one cylinder:

  1. Either a faulty power pack or ignition coil normally causes this. Extremely rare causes include a weak trigger magnet in the flywheel or a timer base.
It sounds like you waqnt me to check trigger and base and magnet on flywheel-stator by the comment above?Both the power pack and top coil ( problem cyl.) are new.i have also cleaned ground wires and terminals.
 
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