I purchased a used 1996 Evinrude(model E25TEEDA) motor and the first time out the twist-grip separated from the throttle plate on the tiller arm. I have not been able to get the throttle to open up. I cannot find a manual that describes how to repair it. I removed the twist-grip (not the throttle plate)and replaced it but still cannot get the throttle to open up. Some black plastic flanges on the throttle plate had broken off. I purchased a new throttle plate but the repair shop did not have a manual nor could they provide instructions on how to install the new plate. I checked iboats' site for one, too, but don't see what I need. I went to the library and found several manuals but none address this at all. One did discuss the fine tune adjustment at the end of the throttle so I'm at my wits end in trying to get the info to fix this myself. Any suggestions would be appreciated. Thanks.