change your thermostat
475lbs
683 lbs.
225 to 315 depend on model
The 1997 model Mercury, 225 hp EFI uses a NGK BR8HS plug, gapped to .035 in.
40 lb. ft. w/#271 loctite
Yes. I have a friend who is a Yamaha dealer and I bought a boat from him with this engine and he had his regonal distributor run the numbers to be sure this engine was made by Yamaha.
538 lbs.
1989
The dry weight for a 1996 model, 225 hp Yamaha outboard is listed at 494 lbs for all models except a 225TLRU, which is listed at 417 lbs.
455 lbs
5800 rpm
around 600 pounds