87 yamaha 150hp<br /><br />hopefully in the future if someone has this problem of a slow cranking yamaha that will not start due to no spark, they have used the search function and find this.<br /><br />had a mechanic look at it and $400 later it is running perfectly.<br /><br />there is a bushing in the top of the lower unit that corrodes up causing the motor to appear 'siezed'. because it is cranking too slowly the pickups cannot develop the necessary current to produce a spark.<br /><br />remedy is to partially remove the L/U and apply heat to the bushing. i am not sure which bushing this is or where it is since the mechanic did not specify. apparently this is common, he knew right away what to do.<br /><br />now the motor cranks faster than it ever had in the 8 years i've owned it. the previous owner had replaced the powerhead due to it being "siezed". i bet this bushing is what had siezed up. so beware of Norwest Marine in Norwalk, CT... they did this.<br /><br />i would also like to comment that the corrosion protection and materials used on these non-saltwater series yamahas is about as bad as it gets. broken bolts are commonplace. steel parts used in the tilt-lock ($60 for new parts) and the shift rod are crap. same with the tilt motor housing. even the grade of stainless the prop is made from allows for surface rust. for a $10000 product i would expect better quality. do they not have saltwater in japan?<br /><br />I own a '59 3hp Evinrude, '58 7.5 hp Johnson, and '69 Johnson 55hp. All owned 30 years plus, used in saltwater and never had any trouble with deterioration such as this. next motor will be an OMC.
