merc 200 cooling problems

[FiShNuT9]

Passage clear , new impeller installed yet no water cooling, help anyone

 

[Wingedwheel]

Re: merc 200 cooling problems

What did the cup and the plate in the water-pump look like when you replaced the impellor? Even tiny scratches will keep it from pumping properly.

 

[FiShNuT9]

Re: merc 200 cooling problems

remove impeller and grease both plate and cup generously , seem to have made a big difference lots of water in telltale and motor stays cool. see how long that last . Thanks for clues

 

[fastback4]

Re: merc 200 cooling problems

remove impeller and grease both plate and cup generously , seem to have made a big difference lots of water in telltale and motor stays cool. see how long that last . Thanks for clues

Not long. Your grease (axle perhaps) filled in low spots and scratches in the cup and created better sealing results..........Tom

 

[FiShNuT9]

Re: merc 200 cooling problems

Well took her out on the lake for two hours, still good , I'm going to run her like that while looking for parts real difficult to find parts other than seals bearings and impeller.Have other issues with gear shift , only have forward no neutral & no reverse on 1961 merc 200 any ideas before I get over my head .
Got her fixed ,all in the spring, it needs to preloaded with one just catching the rear pawl then the other on the forward pawl.