Old Hydroswift
New member
Our 1959 Evinrude Lark 35 hp...33516 was overhauled by the "Boat MD" late last summer. We just put it in the water yesterday (7/15/2010). Oh by the way....it was on dry land in a garage for 30 years before the overhaul. But, the motor and boat are very clean and look good.
After we finally got the motor running, we had these problems:
1.) The motor would not continue to run in low throttle...we were trying to troll
2.) After we stopped for lunch, we had no thrust. We barely moved forward with full throttle and went to the docks....discovered one of our almost new sparkplugs was "fowled" and the other was very dirty. Why?.... we hadn't been running the motor prior to 7/15. We had Champion J4C plugs in the motor......we heard we should have J6C but our local parts store said J6C is being replaced by J4C. Is this the right plug? Did we burn up our plugs trying to get it started?
3.) We have been using a 50:1 oil to gas mixture......is this right? Some of the other boaters at the dock said it should be 30:1 and I read in a blog here that 16:1 was being used.
We are both newbies because the last time we were in this boat we were kids and did not pay attention to the details of actually operating the motor.
Any advise? We want to understand how to properly treat and enjoy this good old antique!!
Can someone help us?....thanks in advance our "Old Hydroswift"
After we finally got the motor running, we had these problems:
1.) The motor would not continue to run in low throttle...we were trying to troll
2.) After we stopped for lunch, we had no thrust. We barely moved forward with full throttle and went to the docks....discovered one of our almost new sparkplugs was "fowled" and the other was very dirty. Why?.... we hadn't been running the motor prior to 7/15. We had Champion J4C plugs in the motor......we heard we should have J6C but our local parts store said J6C is being replaced by J4C. Is this the right plug? Did we burn up our plugs trying to get it started?
3.) We have been using a 50:1 oil to gas mixture......is this right? Some of the other boaters at the dock said it should be 30:1 and I read in a blog here that 16:1 was being used.
We are both newbies because the last time we were in this boat we were kids and did not pay attention to the details of actually operating the motor.
Any advise? We want to understand how to properly treat and enjoy this good old antique!!
Can someone help us?....thanks in advance our "Old Hydroswift"