Have a little Nanni 14hp and a great engine it is. Lately I've been having difficulty when selecting forward gear. If i put it in gear with anything above idle revs it just revs...no turning of the prop...if i just move it into gear...it thinks about it for about 3 seconds then starts to turn the shaft, then i can apply any power i want. Reverse is absolutely no problem. The problem appears to be worse when the gearbox hasn't been used for a while or if it is cold. Gearbox oil was changed about a month ago and did have water contamination from a previous bit of bad luck...source of contamination now removed....say no more. Also had a rope caught around prop about 6 weeks ago.
I have cleaned & lubricated the selector lever externally and it appears to have improved things.
I'm hoping I haven't fecked the gearbox with the rope. I'm hoping it was just a dirty selector lever and the problem will go away once the ATF oil penetrates teh selector shaft...
Anyone any experience of a problem like this and what was the cause?