2006 SD Johnson 4 Stroke 9.9-15HP Outboards Service Manual, Page 255Get this manual
SAFETY Running outboard with engine cover removed
Engine cover is guardWhen you remove coverguard to work on the outboardremember: loose clothing (open shirt sleeves, neckties), hair, jewelry (rings, watches, bracelets), hands and arms can be caught by the spinning flywheel-
Handling high voltage parts like spark plugs and coils can shock you and may cause you to recoil into the rotating flywheel
Two people working together on live outboard must look out for each otherNever, ever, use the key to start the outboard before signaling your partnerHe may be leaning over the outboard with hands on the flywheel, handling "hot" electrical part, or near the propeller