Consult your shop manual, there is a specific order that the head bolts must be torqued.
75 degrees
THis ain't no question
75-90 ft lbs.
If it is a V8 it is 65FT.- LBS.
75-82 ft lbs
75 lbs--rods 45 lbs
The dry weight for a 1986 Evinrude 9.9hp outboard is 75 to 88lbs. depending on the model.
Hi, The most likely cause is a defective head gasket. They normally fail where the push rods pass through from the cylinder to the head. A new gasket is around 20 dollars and is a relatively straight forward job. I normally charge around 75 dollars in my shop to replace a single head gasket, about one hour labor plus the gasket. If you do not feel confident doing the repair, bring it to a reputable shop. It will be done correctly. Then again, it would be a good learning experience. It is critical to have a torque wrench for a newbie doing the job. Torque the head bolts to 25 lb. ft. by progressively tightening little by little. always tighten bolts opposite of each other similar to putting a wheel in a car. Get them all up to about 20 lbs then finalize to 25. run the engine for an hour and recheck. DO NOT use lubricant or never seize on the head bolts. the torque figures are with dry bolts.
i got a 75 hp evinrude with a 6.6 gallon fuel tank it use 16 onces of oil
The torque specs and pattern on the head bolts of a 1991 Toyota pickup with a 3.0 engine are 5, 4, 6, 3, 2, 7, 1, and 8. This sequence is started from the center of the head and requires 75 foot pounds of torque on each bolt.
51-54 ft. lbs. (70-75 Nm)
The correct plug gap for the 1975 model, 75 hp Evinrude, is .032 in.