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I have used a Champion RJ19LM or J19LM, both work fine.
Johnson model number J10RCCD, is a 1988 year model, 9.9 hp outboard.
The tech website says that all plugs on tecumsah engines is .030
Put lots of oil in the cylinder through the spark plug hole, and let it sit overnight.
I have a mint 10hp ducati outboard and have been asking the same question without success. I only want to know how many engines are out there! good luck
The gap for the points is .020". The gap for the spark plug is .030". Timing is fixed but the setting of when the armature meets the cam follower is extremely important. The butterfly valve should move at the center of the mark on the armature for this model. There is play in the cam follower mechanism so just ligning up the cam follower to the mark may be too early.
Because a 5hp motor does not have enough power to turn a 10hp load.
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10hp
it has 10hp and 20 damage
1lt. = 1000cc = 10hp.