Idle setting 73 135hp

[rob 135]

when setting control cables , the idle screw should be pulled back so is against block right? Is the cable adjusted by the thumb wheels on cable?

 

[rob 135]

Re: Idle setting 73 135hp

 

[Bosunsmate]

Re: Idle setting 73 135hp

View attachment 229573 when setting control cables , the idle screw should be pulled back so is against block right? Is the cable adjusted by the thumb wheels on cable?

Yes and yes
Mine never sits right against it-worn cable

 

[emdsapmgr]

Re: Idle setting 73 135hp

To insure that there is no pressure on the carb butterlys, when at idle-the carb roller should actually not touch the cam. I set mine so that you can slip a pc of thin paper between the roller and cam at idle. As soon as you press the throttle forward-even a little, the roller is already engaging the cam and moving it.

 

[rob 135]

Re: Idle setting 73 135hp

I got idle and timing set , and adjusted cables. But still idle screw not against stop , is this normal

 

[emdsapmgr]

Re: Idle setting 73 135hp

Still a throttle cable adjustment problem. The idle is being determined by the throttle cable position, instead of when the screw rests on the block. When set like this, the idle can vary, depending on what position the cable is when shifted into neutral. (could vary a hundred rpm's or so.) You need to set the idle when the throttle cable is disengaged at the engine end. Then, set the idle first, then adjust the cable end to meet the position of the stud on the throttle lever.

 

[racerone]

Re: Idle setting 73 135hp

The thumb wheel is adjusted so that the screw goes against the block each and every time.--Even a slight bit of preload on it is good.