Old Junk

[Yepblaze]

I've been having a blast running one or the other lately.

<br /> I have a problem with the throttle control on the Johnson 1958 18hp. If I let go of the twist grip it will slowly 5-10seconds go all the way to the stop position. It would be nice if it stopped in the idle area and didn't have so much spring return.

<br /> <br />Also it's not going full butterfly open I see no way to adjust that. The bushing or whatever in the linkage seems real loose is that it? I did notice just the "drape" of the plug wires makes for some degree of recoil acion.<br />

 

[kev_alaska]

Re: Old Junk

I am of absolutely no help to you on the Johnson. The only comment I have is I have that Mercury's twin sitting in my storage shed. I wish the newer ones had as good looking lines as the older ones...<br /><br />Kev_alask***

 

[Bear]

Re: Old Junk

Nice engines, nice pictures!<br />The 18HP Johnson looks about the same as my 1966 Johnson 6HP. Had the same problems. First I replaced the worn roller. Mine is smaller. A piece of a new rubber hose works just fine for it. In your case it might be hard to find a rubber hose in that size. But if you find one it will take care of the butterfly problem (not open fully). I guess it is hard to find a new roller, right?<br /><br />I also made a throttle stop to take care of the idle problem. On the 6HP there is a bolt I used to bolt the throttle stop (a piece of aluminium). Can't see a bolt there in your pictures. I could not figure out how it was supposed to work when it was new. There is no friction screw anywhere.

 

[RICKRICK1]

Re: Old Junk

For your throttle creep problem check out you local motorcycle shop and see if they have a bolt on cruise control. It works with friction and if I remember right there is no drilling as it clamps on.

 

[sloopy]

Re: Old Junk

nice

 

[Reel Appeal]

Re: Old Junk

Hi,<br /> Is the throttle tensioner that bolt head I see in the twist grip??