We have a mid-60's Mercury 3.9 that we got from my girlfriend's grandfather. <br />The serial number is #2078115<br />I recently put in a new plug and fresh gas and oil after it had been sitting unused for about 4 years. Started up fairly easy and ran fine. Took it out on the back of our 12 foot boat and pushed it ok for the engine size.<br />When we stopped for a bit and restarted the motor, the motor started but had no drive to the prop. Pulled the prop and did not find a pin or anything broken. Since that time I have pulled the cover and when you move the gear selector between Forward and Reverse the lever moves in turn moving the cams.<br />My question is: Is this a serious problem or something that can be repaired easily??<br />Most shops in my area won't touch anything over 20 tears old.<br />Thanks for any help.
