'85 90 hp plug gap?

[bdwernychuk]

Clymer's says .034-.036 gap. The factory decal on the engine says .040. Which is right?

BDD

[CLL2437]

My Yamaha service manual states .035-.039 and the Seloc manual states .039. Hope that helps

-Charles

[bdwernychuk]

Thanks. I'll try the .040 for a set of plugs. The bigger gap should help at idle, particularly cold.
BDD

[Spitfire]

Sounds like some of you have manuals for a 1985 90 hp..I ordered mine the other day..not here yet..does your manual give the compression test acceptable limits?? My results are, 80-70-80..that seems low to me?? Thanks Mike