1991 70 HP Force low compression

[roscoe]

Re: 1991 70 HP Force low compression

Very good on the rebuild. I'm surprised you were able to use the piston, but I guess it wasn't damaged to badly.

DO NOT remove the screw in the front, inline with the propeller shaft.
This is the shift pivot crew. It will cause you all kinds of trouble.

The drain screw is under the torpedo, it is barely visible in the photo.
The top 2 screws are vents.
Remove all 3 to drain.
Fill from the bottom screw, allowing air to escape out the top 2 holes as it fills.

Insert bottom screw, then the 2 top screws.

 

[eavdic]

Re: 1991 70 HP Force low compression

Roscoe, thank you very much I have another question in regards to the speed pitot, my speedometer does not work I have this cable with white pitot you can see on the link below by my motor just laying around ,,,I was wondering does that have to be attached to the boat, meaning does it have to be under water...here is the link and another question was I have the bar which I can adjust you can see in attached picture basically it adjusts how much i lower the motor into the water what do you guys think which whole should I use I have it all the way on top now...

http://cgi.ebay.co.uk/Speedo-Pitot-...9129331QQihZ022QQcategoryZ15271QQcmdZViewItem

 

[roscoe]

Re: 1991 70 HP Force low compression

Pitot must be mounted to boat, leg hanging below the bottom of the hull.

Trim pin / hole selection depends on the boat/hull/weight/engine.

The lowest holes will provide the fastest planing time.
One of the higher holes will allow the hull to level out and usually provides 2-3 more mph.

Trial and error is the answer. Start in lower hole, test drive, move pin up, repeat.

 

[eavdic]

Re: 1991 70 HP Force low compression

You are a live saver... I have ordered the manual I should get it this week sometime...I hope I will be able to help others like you have helped me..Thank you very much. Uf you ever come go Grand Rapids Mi let me know I will take for a ride on a 17 FT Bayliner Capri.

 

[eavdic]

Re: 1991 70 HP Force low compression

Guys anyone know what this is for ,,,looks like grease point in front of the motor right above the vent screws but not sure I did not want to put anything in there until confirm...please see picture

 

[milehighboater]

Re: 1991 70 HP Force low compression

speedo pickup. There is usually a small hose that will connect to it with a pick-up on the other side. It doesn't hurt anything not to have it hooked up though.

 

[eavdic]

Re: 1991 70 HP Force low compression

are you saying that instead having a pitot attached to the hull of the boat I should just have the air tube stuck on there....I don't understand...thanks