85H Force Moter Questions

rvitek

Cadet
Joined
Jul 1, 2002
Messages
16
Hello Hello!<br /><br />First time post :) <br /><br />I'm very new to the boating world and I just purchased a boat last weekend. It's a '84 Bayliner with an 85 horse Force outboard out back with only 100 hours on it. I picked up the whole boat and trailer for $2000. I figured, it wasn't the best, but hey, for my first boat, something this cheap and small would fit perfectly for my first time uses.<br /><br />I'm taking my first USCG saftey class this Saturday, and I've spent the last 2 weeks in the library reading... so I'm getting my skills up as quickly as possible. The best for me at this point, I think, is just pure hours out on the lake.<br /><br />I ordered the Seloc Force Repair Manual, but it's going to take about 3 weeks to get here. So, I have a question or two about my motor and was hoping someone had a good answer. I don't know when the last tune-up was done, so I'd like to do this. Does anyone know the part numbers for a set of plugs / wires for this? Also, how about the impeller model number? I'm going to change the lower unit oil (and go synthetic, I think) and lastly, tear down the carbs and rebuild them. I've cleaned out the fuel filter, and plan to run some type of gas treatment through the system. What else am I missing?<br /><br />Thanks for the help all!<br /><br />Ry.
 

Charger183

Seaman
Joined
Jun 25, 2002
Messages
57
Re: 85H Force Moter Questions

Hi Ry: I have the same engine. Cost $500. Sat for 7 years. No troubles. This is the best site I've found so far for Force parts,/drawings... <br />http--www.dougrussell.com-partscatalog-collections-index.cfmfuseaction=collectdetails&colid=09<br />I believe most of the problems with these engines is the unwillingness of the owners to spend the time on them. Use NGK plugs, Marine hypoid oil in the gearcase, regular gas/Walmart 2000 2-stroke oil (1/2 Qt/6 Gal US) and Quickleen (1oz/6Gal). DO NOT TROLL WITH THIS ENGINE. The float level in the carbs is critical and all 3 must be equal. Use a 13.75 X 17 pitch prop if the total weight of the boat and driver is over 1500 lbs. Under can get away with a 19 but the revs may suffer. Expect 4800/5200 rpm at wot. 30/33 mph. Good Luck. Larry...
 

daveswaves

Ensign
Joined
Mar 22, 2002
Messages
901
Re: 85H Force Moter Questions

Hey Charger183, stopped by and checked your boat in Port today, alls OK. The Force is still with you. LOL :D
 

leeray

Cadet
Joined
Jun 28, 2002
Messages
14
Re: 85H Force Moter Questions

hey i have owned a force for years and not a moments worth of trouble if taken care of right it always starts and runs great goodluck
 

rvitek

Cadet
Joined
Jul 1, 2002
Messages
16
Re: 85H Force Moter Questions

Thanks guys for the help! Charger, my man, you rock! I have the same feelings as you - when I owned an old Plymouth car (my first) everyone's feeling - "sell it, it's nothing but trouble!" - but I tinkered and tinkered and put another 80,000 miles on a 120,000 mile engine :) I know it can be done!<br /><br />Are all of those products you mentioned (except for the Walmart Oil, I found that and I'm using it, blue sticker on the bottle) available at the local marine shop, or do I have to call a fix-it place to order the plugs and wires? Awesome site you recommended, they have everything! Thanks again, and I'm not going to let this baby die!<br /><br />Ry.
 

Scottj25

Seaman
Joined
Jun 20, 2001
Messages
51
Re: 85H Force Moter Questions

That is the same boat I own as my 1st boat and if you lived in Sacramento I would have thought you bought it. Fine boat and motor never had a lick of trouble with it. As for changing the lower unit oil to syt. I would'nt do it stay with the type of gear oil that it's been using.<br /><br />And ordering the manual is a good ideal just make sure you read the ins. 2x's due to the fact that little notes that you need to know are mixed in with the dir.<br /><br />If I can be of any help just drop me a note and by the way I had a 19" prop on mine and got the little bugger up to 40 mph. with my wife and I.<br /><br />Take care for the engine and boat and it well take care of you.
 

rvitek

Cadet
Joined
Jul 1, 2002
Messages
16
Re: 85H Force Moter Questions

Awesome Scottj - thanks a ton. You're right, I love this boat and it's fun to drive! My first project is some motor maintenance. My next project is to remove and rebuild the front deck. There's some creaking up in the very tip, and being that I'm a big boy, I'd like to not put my foot through it :) <br /><br />I'll be looking you up for sure my man!
 

Charger183

Seaman
Joined
Jun 25, 2002
Messages
57
Re: 85H Force Moter Questions

You can get all the stuff at any Mercury dealer. <br />I have one warning for you. There are 3 screws in the lower unit. 2 at the top are the fill and over-flow, the one at the bottom is the drain. AT NO TIME WILL YOU REMOVE THE ONE RECESSED::: IT HOLDS THE SHIFTER FORK AND YOU WILL LEARN A WHOLE NEW LANGUAGE IF YOU REMOVE IT. Cover the recess with silicone glue, tape, paint, anything...<br />The plug wires are not removable from the coils but you can replace the plug caps if necessary. The wires are stainless steel and unless you cut them with side cutters will last as long as the coil. Check for any nicks or cuts on the insulation that might allow arking or missfires. I just finished a routine tune-up and found on mine 3/4 turn out was the best setting for the low speed jets. The best advance at WOT was a little more than 32 degs but less than 34. By the way, I clean the plugs regularly after 25 gal have run through. Just a though but if you have a volt meter on board you will see the engine will run the batery up past 16 volts after a very short time, if it is good. I haven't found any problems with this yet but some of the newer electronics will not like the high voltage. A regulator or a constant load on the battery when running (lights, radio, etc.) will likely help. Larry
 

rvitek

Cadet
Joined
Jul 1, 2002
Messages
16
Re: 85H Force Moter Questions

Thanks Larry - I was able to pick up the repair manual at a local shop (hence closing my online order) and I picked up a few things there too. Replaced the plugs, overhauled the carbs, readjusted the choke and finally set the idle speed. She runs nice and clean now, starts on the first crank, and dosen't die at idle. Shocked the heck out of me that just a little bit of maintenance can produce a near new motor. If all goes well tonight, I plan to take her out on the water and see how she does for about an hour run. I did notice that the plug boots are pretty rusted, so I'll check out the suggestion you gave to just replace the boots. The shop quoted me about $70/each for the distributers (that include the shock wire) which is a bit steep, since I don't have any starting problems. I'm going to run up to Radio Shack today and get some di-electric grease for a short term fix. But overall, I have a big big smile on my face!<br /><br />Thanks again Larry!<br /><br /> :D
 
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