Re: 85 hp Suzuki issues
ON carbs:<br /><br />Remove the oil injection tank, detach oil feed line and oil sensor wires. <br /><br />Remove the air intake bolts, bend back the metal stays, and remove the intake plate. Clean the plate with ether (I use starting fluid, but DO NOT USE THIS TO TRY TO START THE ENGINE AS IT WILL DAMAGE THE CYLINDERS) blow out lower excess fuel drain hose, if broken, replace it. While your at it, replace the fuel line from the intake nozzle to the fuel filter at the rear right of the lower engine housing. Alos open the clear fuel filter holder, clean all parts with ether, blow dry with high pressure air. <br /><br />Pull carbs by removing the nuts behind the carbs. Be sure to catch the gaskets that go between the carbs and intake. Pop of fuel lines, replace if worn, pop off linkage from the carbs, and drop the auto choke down. Clean the ram on the choke with ether. When you have the carbs off, start with the top carb, twist it so you can access the jet screws and bowl screws. Pull them out, clean with ether, blow out with air. Clean the bowls with ether, push the float pin out, clean off the flots, shake to see if they are damaged (if they have gas in them, find the hole, drane them, repair the hole, or replace the float) After you take off the floats, remove the center jet, watch the fuel pin as it will get lost, make note of the direction of all parts. Pull that jet out and it will look nasty, clean it, clean the carb body, inside and out with ether, blow all parts dry with compressed air (nice to have a air compressor) to insure all jets are clean. Reinstall all parts, (the gasket should be ok to use again) and repeat the steps for the other two carbs. <br /><br />Be sure to check all chokes to insure they move without excess pressure. It they do, clean then out, blow then dry. <br /><br />Be sure to check the intake for debris and **** that get that far into the system (I once found a hornets nest in one) clean with ether, blow out, let dry for a few. <br /><br />This is a good time to check all the lines to the oill injection system. Be sure no cracks or leaks, ether will do a nice job cleaning them off. <br /><br />While the carbs are off, you will be able to see the shift shaft below the intake. The shaft has a hole in the top that the shaft rod slids through. Reattached this prior to installing the carbs. Clen out the area below the carbs (usually filled with leaves and **** like that) and clean out the lower engine case drains. <br /><br />Use a very thin (like paper) of clean grease to hold the carb gaskets in place while you put the carbs back on. For the hard to reach nuts, try using a small amount of grese on the nut, then put it in place with a finger, the grease will hold it suspended for a short time to get it started. Sung the nuts up to the intake. Starting with the top, alternate tightning all till nice and snug. Reattached intake plate, intake cover, and oil tank. <br /><br />Prior to starting, it would be a good time to run a compression check on the cylinders. Pull the plug wires, pull the plugs, replace if worn, gap and clean all and set them aside. Using a screw in type guage, (make sure all tools are off the fywheel) turn the engine over for 2 secs. You should get 140 - 155 lbs, with no more than a 5 - 7 lb difference per cylinder. If that is OK, squirt a small amount of clean fuel into each cylinder and install the plugs. <br /><br />Prior to cranking be sure the battory has 12-13 cold cranking amps. Check the fuel filter in the boat between the tank and the fuel bulb. If it is old, pull it off and replce it. If it looks ok, pull it off, drain it, clan the bowl, then reinstall. Pull off the main fuel hose to the fuel filter at the rear right of the mengine. Put it in a small can to catch the gas. Pump the fuel bulb so you get a full stream of good fuel into the can. Reattached the fuel line, then pump the bulb full till it is hard. Make sure the choke is working. <br /><br />Attached a water feed clamp to the lower housing and turn on the water to fill the system. Using a small spray bottle, give the carbs a pre-spray at the back side intake holes above the choke. Start it up. <br /><br />Do not be alarmed if the thing starts up and scares the crap out of you. That motor is one that will just jump up and start running.