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Old 08-10-2005, 09:53 PM
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Boat: MC Prosport 1992, 351 Windsor
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1992 205-Broken Belt

The belt broke tonight, fortunately I don't think i ran very long with it broken.
The person I purchased the boat gave me an extra belt since his experience told him that breaking belts was common.
The belt he gave me is much wider than the one that was on the engine.
My question is how do you get the new belt around the crank shaft pulley?
Also, is it common for belts to break?
Oh, and one last thing, any one know the part number for the belt on the 1992 351 Windsor Standard?
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Old 08-10-2005, 11:07 PM
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Boat: 1988 prostar 190
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as belt wear, they sometimes get thinner...that may be the case here. To get new belt on crank pulley, loosen alternator , rotate towards engine to give belt slack, put belt over crank pulley, tighten belt by prying a little on alternator while tightening bolts back up.
As forthe part #, it should be on the belt if the old belt didn't disintegrate. Your local auto parts store should have a match if you bring in the old belt!
Hope this helped! Good Luck
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Old 08-11-2005, 08:16 AM
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I may be missing something here, but to get the belt over the crank pulley, it looks like i need to undo a lot of things. I didn't want to start taking too many things apart before checking with all of you, if i the bracket off that is holding the crank pulley, is alignment difficult when putting back together?
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Old 08-11-2005, 09:27 AM
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I can see the part number on the broken belt and it is different from the one given to me by the previous boat owner. I'll call the MC dealer here in town.
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  #5  
Old 08-11-2005, 09:44 AM
Leroy
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That's too bad. Do you see a lot of pieces of belt on the floor or was it a clean break? You can also eyeball the pulleys to see if they are in line or place metal ruler across pulleys to see if any are out of line.
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Old 08-11-2005, 09:47 AM
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Clean break.
How do I get the belt around the crank pulley?
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  #7  
Old 08-11-2005, 10:17 AM
Leroy
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Redmike answered below.
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  #8  
Old 08-11-2005, 10:43 AM
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If there is a bunch of rust on your pulleys replace them and your belts will last much longer. My belt was never replaced in 12 years but I had the chrome pulleys.
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Old 08-11-2005, 10:44 AM
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Boat: 1994 Prostar 205/2005 Maristar 210 VRS - MCX
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I broke three belts the first season on my 94. The dealer had to shim the alternator to fix the problem. I average about 1 belt every two years. I keep two belts in glove box with a tool kit at all times. If I remember correctly, I had to remove a coolant hose and the bracket/bar to the fresh water pump on the front of the crank to get the new belt on. Of course you have to loosen the adjustment bolt on the alternator. Feed the belt onto the crank, water pump, and alternator pulley and re-attach the bracket and tighten everything.

Another way belts break frequently is rust/corrosion on either the water pump pulley or crank pulley. The older pulleys are steel that is chrome plated, the newer one are all aluminum.
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Last edited by rspiecha; 08-11-2005 at 10:48 AM.
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Old 08-11-2005, 12:53 PM
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SkySkiSpokane SkySkiSpokane is offline
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Boat: '95 Prostar 205 LT1
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Surf,
Is it an LT1?? The belts and tensioning system is completely different on LT1s than it is on the factory TBI motor? The LT1 belt is much wider, not as long and is put on with a tensioner pulley not by adjusting the alternator. It takes two minutes and you only remove the brace that attaches to the water pump to put the belt around it. Without any further details you may have the wrong belt.
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