I wanted to know if anyone could help me time my motor i dont have my manual with me thanks in advance model v4sl 12s 2143759 and also a wiring diagram
I wired the ignition wrong or the coil was bad to begin with anyway replaced the coil and condenser and got spark back on one side and not the other diffrent problem im working on but anway i threw it out of time when i took the distributor off
ok so i got it timed but still no fire and am planing on replacing the points i have one point engaging like it is sapposed to and the other one is locked up and not moving so anyway plan to replace those tomorrow this is the reason it only sparks on one side so what i am looking for now is a wire diagram for this motor so i can get it wired right i keep blowing fuses if anyone has this that would be most helpful thanks in advance
Mike
The 1960 75hp model is a magneto ignition system and the wiring is fairly simple.
What are the terminals marked on the back of the ignition switch?
What color wires do you have leading from the wiring harness that would connect to the switch?
ignition switch b a s c m m and the wire leading to the ign switch red , green ,yellow two black grounds keep in mind i am tring to save as much of this wiring as possible so i still have to remove a few cracked wires so should be replacing them today my father in law and a friend they are both master electrictions so they are helping and have weeded few out so they asked me to get a diagram because their is constant power going to the coil something in the electrical control box is not right thanks
mike
Six gallons at Cruising Range = 1hr and 45 minutes
Cruising range is reached by..... Hit full throttle, then back off to approximately 3/4 throttle. Spark advance stays at full advance at this setting but the throttle butterflies close to about 1/2 the setting or less.
Remove the hood, engine not running but in gear, adjust/move throttle as above to observe what I'm speaking of.
so how bout if i was trying troll with this motor at a low speed i know i ask a lot but if this is that bad i will get it to good working order and sell this beast lol anyway so low idle in a windless conditions so you say adjust the throttle to in gear off and this will save more gas so if i do this in trolling speed will i do better
Kinda like this. More throttle means more fuel consumption. Less throttle means less fuel consumption. But I don't recommend using anything above 25hp for trolling for various reasons.
The 75 will troll ok, but you will be surprised at how much gas it uses while doing so. The reason is the intake/crankcase design, very inefficient. A lot of fuel "rains" out of the air charge and is dumped overboard. There is nothing you can do about it, except buy a newer motor.
ok well worth a shot thanks guys i will have to try to see how much use i can actually get out of it based on this info i can see im going to spend a lot but a new motor is kind of a lot no worries i will probable run it the rest of the season and then buy a new one next year i appriciate the help thanks
mike
would you please send me manuel instructions on timing a 1960 75hp v4 magneto where im confused is i got the flywheel mark and the mark on the pull start now om the mag in neutral the shifter has a stop for the mag do you line up the marks on timing belt pulley and the base of mag there also there is a casting mark on mag that i took for my timing mark but upon further looking i found another mark now the new found mark is aprox 90 degree from the nutral switch riser
i am not working with that motor right now or possible ever again based on gas consumption anyway i have the real owners manual but i think if you i m joe reaves he was a great help for me and he also gave timing instructions wish i could be more help
Mike
These are for my '59 50HPV4 motor. Yours should be similar.
Line up flywheel timing mark with mark on pull starter and block. Advance throttle until mark on pulley base aligns with punch mark on dist bracket. Set dist pulley so timing mark aligns with mark on pulley base. Set points to .020. Set carb arm to just touch roller on throttle plate shaft. Turn flywheel CW until pulley aligns with mark 90* away, near block. Adjust second set of points to .020. Install pulley cover.
