Re: force 125 conecting rod
Ahhh---The 1000 Islands. Beautiful. I used to live in N.Y. State and cruised the Hudson up to Canada then the St. Lawrence Seaway down to the Eisenhower Locks.--Never got to the islands with my boat though. Is there still an amusement park called La Rhonde at Isle St. Helene in Montreal?
Typically, the engine is running great at full throttle , then suddenly for apparently no reason it starts to lose speed. Then it makes a rattling noise and may stall.---It's too late. The damage has already been done. If you decide to repair the engine, you must look for the reason it went lean on the one cylinder. For some reason, gas was not getting to one carb in enough volume. And even if one carb serves two cylinders, it is also usual for only one of them to be damaged. First action is the remove the head and actually see the damage.
Anyway, if the piston looks dry, chances are relatively good that it was running very lean. I would bet that when you pull the head, you are going to see some sort of melt damage at least on the exhaust port side of the piston. Usually if they get bad enough to stop the engine and if you can hear the rattle, then you are going to need to disassemble the engine and bore the affected cylinder oversized.
Once you remove the head and assess the damage, you can decide on a course of action. These engines are easily repairable by the average handyman and very few special tools are needed. Cost is usually low in comparison to buying a new engine and satisfaction level is high. If you decide to repair, there are many posts in the forum which you can search.
