1971 Evinrude Fisherman 6HP outboards Service Manual, Page 30Get this manual
Figure 4-8Cleaning Spark Plug Seat If threads are stripped in cylinder head, Heli-Coil inserts are availableCaution should be taken when installing the Heli-Coil insertsTools for inserts are available from your parts distributor280 4
CLEANING BREAKER POINTS Figure 4-6Magneto Attaching Screws aAfter extensive service, the breaker pOints may become worn, dirty, or out of adjustmentInspect the breaker assemblies for corrosion or unusual wearQuestionable breaker pOints should be replacedCheck action of the spring and free movement of the breaker armDO NOT change breaker arm spring tensionbDirt, foreign particles, and oil are very detrimental to contact performanceThe oils and acids from person's hand, even though clean, can affect contact resistanceOil deposits on the points will cause them to burn out after very short period of operationIf points need cleaning, use alcohol or trichlorethyleneNEVER FILE POINTS - replace themcTo remove any traces of dirt from contacts, insert strip of bias tape and work it up and down between the pOintsRepeat entire cleaning procedure for second set of pointsdCheck points for good electrical contact, using ignition analyzer as described under "Breaker Point Testing Check and adjust breaker point setting as necessary as described under "Breaker Point Adjustment