Hello everybody. Long time lurker here. I recently bought a 1998 Javelin 389B with a Johnson 175 Fast Strike J175GLECD engine. It has a Raker 14.5x24 prop on it. During test ride it stumbled trying to get on plane, even died a few times. When on plane it maxed out at 5,000 rpms and 55 mph GPS. I knew it had a lot more in it. Did a compression check before purchase and all cylinders were 92-100 psi. I figured it was minor fuel or timing problems. So I bought it. After researching a lot this week I found that all 6 bowls were warped, throttle plates were 1/2 open before timing started to advance, and had a bad spaghetti gasket between manifolyand reed cage assembly. I fixed all these issues and put new fuel lines, new and correct spark plugs gapped at .030”,and Evinrude bulb on. The optical sensor and power pack look to be newish CDI products. It has gray spark plug wires. It seems to be running much better at idle on muffs ( forgot to mention idle screws were 10 1-2 turns out, now idles smooth at 7 turns). Only real problem I have is that I timed it with a Snap On light and the high speed timing is 26* btdc with the adjustment all the way (-). I don’t see any way of retarding it without installing a smaller wheel on the arm or cutting the timing advance cam. Any input would be greatly appreciated. Oh yeah, my background is machining and tool/die work. Thanks in advance.
Dave
Dave
