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My motor does not have the power it use to had. I rebuild it and has great compression, I changed the black box, the trigger and the captor that were failing. And i find out that it was blowind air out from the carburetor throug the air filter. Somewhere i read that the reason for that may be that it could be triggering the spark out of time. The plate housing the captor and the trigger has a screw regulation linking it with the accelerator and I think someone play with that. I though that regulation of that plate could be my problem of advanced o retarded spark fire.If your motor is a J8RERE, it is a 1994 model.
I have one.
I don’t believe there is any adjustment, it’s fixed. Timing does not go out unless the flywheel key is sheared, or ignition module is pooched.
What is your motor doing/not doing?
Here is a page from factory service manual.
[email protected]Pm me your email address. I’ll send you the factory service manual. It will give you the link & synch procedure