R.I.P 1998 75 Force

TwoFish

Petty Officer 1st Class
Joined
Aug 7, 2010
Messages
373
I?ve decided to call it quits on this motor. The cost of the parts, the gymnastics in trying to purchase the parts and having them shipped from the states. Also my lack of experience with rebuilding power heads had me a bit nervous about how the project would finish up.

My wife has been trying to persuade me for a while to buy a new motor rather than repair this one and last night it worked. I will be fitting a Yamaha F70 to the boat shortly. The Adelaide boat show is on this weekend and hopefully there will be some specials.

I?d like to thank everyone on this forum for their support and advice over the last couple of years. I?ve learnt so much from being involved with this group. This forum has made it a pleasure to own a Force motor. I?ll still be around on the forum but not having a motor will make it hard to post photos.

Thanks Again

TwoFish
 

emoney

Commander
Joined
Jul 19, 2010
Messages
2,551
Re: R.I.P 1998 75 Force

Well then, I guess a "Awww....sorry to hear that" and a "Hey, that's awesome! Congrats on the new toy" are both in order. I know you had a good run at that 75, so don't feel frustrated as parts availability is something you can't affect. Good that it's turned out you're getting a new replacement. Make sure you update us with the new addition, complete with on-water pics, of course.
 

TwoFish

Petty Officer 1st Class
Joined
Aug 7, 2010
Messages
373
Re: R.I.P 1998 75 Force

Jerry. Weight is the main reason. 125kg Rated Transom weight and 75hp max power. The boat has a built in pod on the transom and is very sensitive to weight aft. It needs all of the 75hp with 3 guys and fishing gear. Most of the newer motors are way over weight.

I know someone with the same boat (later model) fitted with a yamaha F70 and he is extremely happy with it. He has done 300 hours & 4000 kilometers. It originally had 90hp Mercury. Later model boats had a higher power rating but it still suffered from the extra weight. He said the new motor transformed his boat.

I don't have any real preference for Yamaha. The 70hp 2stroke yamaha would also work but extra range of the 4 stroke would be handy. The extra moving parts on the 4 stroke and complexity will make it very difficult to maintain myself. I was enjoying that aspect with the Force.

Yamaha have a good reputation locally. May just be good marketing.
 

kywings

Seaman
Joined
Apr 11, 2011
Messages
58
Re: R.I.P 1998 75 Force

Sorry to hear that, I was hoping to see if any of this affected your miss. Do you think the miss was related to the cylinder? What drove you to pull the power head? The guys here that have Yamaha are satisfied. Good luck and thanks for the tips.

Kywings
 

TwoFish

Petty Officer 1st Class
Joined
Aug 7, 2010
Messages
373
Re: R.I.P 1998 75 Force

Kywings. I'm not sure where the miss was. I know the reeds were not closing properly and the recirculation check valves were faulty. I pulled the power head because I snapped a couple of bolts trying to check the exhaust plate. I took the Powerhead off to give myself room to tackle the remaining bolts. Once I had gone that far I thought I should check what condition the rest of the Powerhead was in. It snowballed from there. The price of the repair without touching anything electrical on the motor was around $1,500.00. Doing most of the work myself and trying to import the parts from the US. The motor was not a good match for my boat as the small diameter prop slipped badly until up to plaining speed. When I sat down and looked at the time and money it would have taken to get it going again I thought it was time to start again with a new motor.
 
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