have a manual on order but...

[y not]

Till it arrives can anybody tell me the correct spark gap for my motor 1981 v4 115hp. I have just bought a new set of Champion L77JC4 plugs & dont trust factory presets to be correct. Also is it possible to disable the gear selector without dismantling the control box to allow to rev motor with just muffs on. How far should the fast idle lever lift the revs????

 

[93bronco]

Re: have a manual on order but...

in 1979 they were set at .040.<br />i wouldnt rev motor on muffs.

 

[LubeDude]

Re: have a manual on order but...

The reason you do not want to rev the motor on muffs is that it can over rev uncontrolably for a period of time causing damage! Ive never experienced it myself, but I saw it happen at the ramp once, not a pretty picture! I understand it is because there is no load on the motor!<br /><br />Maybe someone else can expand on it more!!<br /><br />LubeDude

 

[y not]

Re: have a manual on order but...

Ok msg recieved loud & clear DO NOT REV WITH MUFFS ON!!!!!!!!<br />If I cant do this the how can I confirm fix to lack of power problems without putting boat on the water (about 1 hr round trip from my place)

 

[G DANE]

Re: have a manual on order but...

By reving without load, you wont confirm fix anyway. <br /><br />Lots of people have bought used v4´s hearing them without load, only to discover problems when they got on their boats and in the water.

 

[y not]

Re: have a manual on order but...

Found dicey connection on one lead now fast idle lifts to almost 3000rpm was onlyabout 1800 rpm prior to repair so hope this is the right rpm level & I can hit the water with confidance thanks for the advice folks!!!!!! much appreciated