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Mercrusier starter mounting bolt problem
Just a heads-up to anyone replacing a starter in an I/O Mercrusier.
I've replaced dozens of Mercrusier starters and I always use the best new starters available from the same supplier. I've never had a premature failure of the starter itself. I replaced one in a 3.0 about a month ago and it was the first starter that came with new mounting bolts. Customer called Sunday with a complaint that the starter was making a funny noise. Turns out the long mounting bolt had failed/sheared off (see link below). There was nothing unusual about the install and I know I didn't over tighten it. Luckily, with the help of an angle drill, mirror and an ez-out, I was able to make everyone happy but I am going to rethink using supplied bolts. http://www.rovatune.com/starterbolt.jpg Larry |
Mercrusier starter mounting bolt problem
"Larry W" wrote in message ... Just a heads-up to anyone replacing a starter in an I/O Mercrusier. I've replaced dozens of Mercrusier starters and I always use the best new starters available from the same supplier. I've never had a premature failure of the starter itself. I replaced one in a 3.0 about a month ago and it was the first starter that came with new mounting bolts. Customer called Sunday with a complaint that the starter was making a funny noise. Turns out the long mounting bolt had failed/sheared off (see link below). There was nothing unusual about the install and I know I didn't over tighten it. Luckily, with the help of an angle drill, mirror and an ez-out, I was able to make everyone happy but I am going to rethink using supplied bolts. http://www.rovatune.com/starterbolt.jpg Larry Made in China? Eisboch |
Mercrusier starter mounting bolt problem
"Larry W" wrote in message ... Just a heads-up to anyone replacing a starter in an I/O Mercrusier. I replaced one in a 3.0 about a month ago and it was the first starter that came with new mounting bolts. Customer called Sunday with a complaint that the starter was making a funny noise. Turns out the long mounting bolt had failed/sheared off (see link below). There was nothing unusual about the install and I know I didn't over tighten it. Quite a few years back, MercCruiser, Volvo, and OMC had starter bolt breakage problems with the 3.0L motor due to vibration the first year GM changed to the small-diameter permanent-magnet starter housing. Each company sent out service bulletins about, and incorporated into the following years line-up, an L-shaped bracket from the back of the new starter to the engine block. The bracket kept the starter from wobbling when the motor was idling, thus keeping the bolts intact without breaking. See your dealer for the bracket and hardware as I'm guessing that it was probably not installed and tightened like it should have been. One bolt on the back of the correct starter has a threaded stud for the bracket, lockwasher, and nut. There is a threaded hole in the engine block for a bolt to fasten the other end of the bracket. Bill Grannis service manager |
Mercrusier starter mounting bolt problem
On Jul 30, 9:37 pm, Larry W wrote:
Just a heads-up to anyone replacing a starter in an I/O Mercrusier. I've replaced dozens of Mercrusier starters and I always use the best new starters available from the same supplier. I've never had a premature failure of the starter itself. I replaced one in a 3.0 about a month ago and it was the first starter that came with new mounting bolts. Customer called Sunday with a complaint that the starter was making a funny noise. Turns out the long mounting bolt had failed/sheared off (see link below). There was nothing unusual about the install and I know I didn't over tighten it. Luckily, with the help of an angle drill, mirror and an ez-out, I was able to make everyone happy but I am going to rethink using supplied bolts. http://www.rovatune.com/starterbolt.jpg Larry Then again, I've seen seemingly countless OE bolts broken off in the block. especially 350 chevy's. Oh and naturally it would mostly break on the 'inside" bolt, too! |
Mercrusier starter mounting bolt problem
On Jul 30, 9:37 pm, Larry W wrote:
Just a heads-up to anyone replacing a starter in an I/O Mercrusier. I've replaced dozens of Mercrusier starters and I always use the best new starters available from the same supplier. I've never had a premature failure of the starter itself. I replaced one in a 3.0 about a month ago and it was the first starter that came with new mounting bolts. Customer called Sunday with a complaint that the starter was making a funny noise. Turns out the long mounting bolt had failed/sheared off (see link below). There was nothing unusual about the install and I know I didn't over tighten it. Luckily, with the help of an angle drill, mirror and an ez-out, I was able to make everyone happy but I am going to rethink using supplied bolts. http://www.rovatune.com/starterbolt.jpg Larry Larry, it could be you just got a bad bolt, too. |
Mercrusier starter mounting bolt problem
Billgran wrote:
"Larry W" wrote in message ... Just a heads-up to anyone replacing a starter in an I/O Mercrusier. I replaced one in a 3.0 about a month ago and it was the first starter that came with new mounting bolts. Customer called Sunday with a complaint that the starter was making a funny noise. Turns out the long mounting bolt had failed/sheared off (see link below). There was nothing unusual about the install and I know I didn't over tighten it. Quite a few years back, MercCruiser, Volvo, and OMC had starter bolt breakage problems with the 3.0L motor due to vibration the first year GM changed to the small-diameter permanent-magnet starter housing. Each company sent out service bulletins about, and incorporated into the following years line-up, an L-shaped bracket from the back of the new starter to the engine block. The bracket kept the starter from wobbling when the motor was idling, thus keeping the bolts intact without breaking. See your dealer for the bracket and hardware as I'm guessing that it was probably not installed and tightened like it should have been. One bolt on the back of the correct starter has a threaded stud for the bracket, lockwasher, and nut. There is a threaded hole in the engine block for a bolt to fasten the other end of the bracket. Bill Grannis service manager Thanks Bill, I've replaced many starters with the bracket but didn't know about the service bulletin. I'm going back and install one today. I think Tim is right that this was just a bad bolt. According to the customer they only used the boat twice since the replacement. Larry |
Mercrusier starter mounting bolt problem
On Jul 31, 9:36*am, Larry W wrote:
Billgran wrote: "Larry W" wrote in message ... Just a heads-up to anyone replacing a starter in an I/O Mercrusier. I replaced one in a 3.0 about a month ago and it was the first starter that came with new mounting bolts. Customer called Sunday with a complaint that the starter was making a funny noise. Turns out the long mounting bolt had failed/sheared off (see link below). There was nothing unusual about the install and I know I didn't over tighten it. Quite a few years back, MercCruiser, Volvo, and OMC had starter bolt breakage problems with the 3.0L motor due to vibration the first year GM changed to the small-diameter permanent-magnet starter housing. Each company sent out service bulletins about, and incorporated into the following years line-up, an L-shaped bracket from the back of the new starter to the engine block. The bracket kept the starter from wobbling when the motor was idling, thus keeping the bolts intact without breaking. See your dealer for the bracket and hardware as I'm guessing that it was probably not installed and tightened like it should have been. One bolt on the back of the correct starter has a threaded stud for the bracket, lockwasher, and nut. There is a threaded hole in the engine block for *a bolt to fasten the *other end of the bracket. Bill Grannis service manager Thanks Bill, I've replaced many starters with the bracket but didn't know about the service bulletin. I'm going back and install one today. I think Tim is right that this was just a bad bolt. According to the customer they only used the boat twice since the replacement. Larry- Hide quoted text - - Show quoted text - Yes, Larry. Notice where the bolt broke, right at the base of the threads. From what I understand, that when cutting the threads, sometimes the die will stress the bolt at the base of the thread. it's not common, but it does happen. By the looks of the threaded end, evidently all was clean when it was installed. I'm glad you were able to dig it out, especially in the position you had to work with. I know you've already done the work, but I probably would have put one of the origional bolts back in. |
Mercrusier starter mounting bolt problem
Tim wrote:
On Jul 31, 9:36 am, Larry W wrote: Billgran wrote: "Larry W" wrote in message ... Just a heads-up to anyone replacing a starter in an I/O Mercrusier. I replaced one in a 3.0 about a month ago and it was the first starter that came with new mounting bolts. Customer called Sunday with a complaint that the starter was making a funny noise. Turns out the long mounting bolt had failed/sheared off (see link below). There was nothing unusual about the install and I know I didn't over tighten it. Quite a few years back, MercCruiser, Volvo, and OMC had starter bolt breakage problems with the 3.0L motor due to vibration the first year GM changed to the small-diameter permanent-magnet starter housing. Each company sent out service bulletins about, and incorporated into the following years line-up, an L-shaped bracket from the back of the new starter to the engine block. The bracket kept the starter from wobbling when the motor was idling, thus keeping the bolts intact without breaking. See your dealer for the bracket and hardware as I'm guessing that it was probably not installed and tightened like it should have been. One bolt on the back of the correct starter has a threaded stud for the bracket, lockwasher, and nut. There is a threaded hole in the engine block for a bolt to fasten the other end of the bracket. Bill Grannis service manager Thanks Bill, I've replaced many starters with the bracket but didn't know about the service bulletin. I'm going back and install one today. I think Tim is right that this was just a bad bolt. According to the customer they only used the boat twice since the replacement. Larry- Hide quoted text - - Show quoted text - Yes, Larry. Notice where the bolt broke, right at the base of the threads. From what I understand, that when cutting the threads, sometimes the die will stress the bolt at the base of the thread. it's not common, but it does happen. By the looks of the threaded end, evidently all was clean when it was installed. I'm glad you were able to dig it out, especially in the position you had to work with. I know you've already done the work, but I probably would have put one of the origional bolts back in. Tim, Yup, old bolt back in. I do a lot of starters on the 8 lakes I service especially this year with the amount of rain we've had. People don't realize the need for a decent cover or automatic bilge - that's OK with me. Larry |
Mercrusier starter mounting bolt problem
Metallurgy can be defective sometimes. I used SS bolts on my Mercruiser
starter-not likely to snap even if you reefed on the torque. Had a shock absorber once that snapped the upper stud a while after installation. Poor metallurgy. Your bolt failed at a stress riser point, right where the thread ends. This is right where a torque failure would occur. JR Larry W wrote: Just a heads-up to anyone replacing a starter in an I/O Mercrusier. I've replaced dozens of Mercrusier starters and I always use the best new starters available from the same supplier. I've never had a premature failure of the starter itself. I replaced one in a 3.0 about a month ago and it was the first starter that came with new mounting bolts. Customer called Sunday with a complaint that the starter was making a funny noise. Turns out the long mounting bolt had failed/sheared off (see link below). There was nothing unusual about the install and I know I didn't over tighten it. Luckily, with the help of an angle drill, mirror and an ez-out, I was able to make everyone happy but I am going to rethink using supplied bolts. http://www.rovatune.com/starterbolt.jpg Larry -- -------------------------------------------------------------- Home Page: http://www.seanet.com/~jasonrnorth |
Mercrusier starter mounting bolt problem
On Jul 31, 4:45*pm, JR North wrote:
Metallurgy can be defective sometimes. I used SS bolts on my Mercruiser starter-not likely to snap even if you reefed on the torque. Had a shock absorber once that snapped the upper stud a while after installation. Poor metallurgy. Your bolt failed at a stress riser point, right where the thread ends. This is right where a torque failure would occur. JR Larry W wrote: Just a heads-up to anyone replacing a starter in an I/O Mercrusier. I've replaced dozens of Mercrusier starters and I always use the best new starters available from the same supplier. I've never had a premature failure of the starter itself. I replaced one in a 3.0 about a month ago and it was the first starter that came with new mounting bolts. Customer called Sunday with a complaint that the starter was making a funny noise. Turns out the long mounting bolt had failed/sheared off (see link below). There was nothing unusual about the install and I know I didn't over tighten it. Luckily, with the help of an angle drill, mirror and an ez-out, I was able to make everyone happy but I am going to rethink using supplied bolts. http://www.rovatune.com/starterbolt.jpg Larry -- -------------------------------------------------------------- * * * * Home Page:http://www.seanet.com/~jasonrnorth- Hide quoted text - - Show quoted text - Stainless steel is not particularly stronger that ordinary steel. It's just stainless. If you want stronger then you need grade 5 or grade 7 bolts. The v8/v6 starter mounting has had that bracket from the back of the starter to the block for a long time. I'm surprised someone had to figure it out again on the 4 banger. |
Mercrusier starter mounting bolt problem
"Larry W" wrote in message ... Tim wrote: On Aug 1, 10:59 am, wrote: Stainless steel is not particularly stronger that ordinary steel. It's just stainless. If you want stronger then you need grade 5 or grade 7 bolts. The v8/v6 starter mounting has had that bracket from the back of the starter to the block for a long time. I'm surprised someone had to figure it out again on the 4 banger.- Hide quoted text - - Show quoted text - Grade 7? I ahven't ehard of 7, but am familiar with grade 8. I'm thinking that the reason that the brace was gone is probably because somebody had changed out the starter before and deemed the brace to be a PITA. and left it off with the thought of "We don't need that after all, all it is...is a bracket!" It was the original starter that failed and didn't have the bracket. I have since put my hands on some extra brackets to use on future similar jobs. Larry Problem with grade 8's etc. are they are too strong. They will loosen in a lot of applications as you can not get enough stretch to preload the bolt. |
Mercrusier starter mounting bolt problem
wrote in message ... Stainless steel is not particularly stronger that ordinary steel. It's just stainless. If you want stronger then you need grade 5 or grade 7 bolts. -------------------- What he said. It's a common misconception that "stainless" is stronger than regular steel. To the contrary. There are many grades of steel that are much stronger than the common 304, 316 series of stainless. In fact, the stainless will be more ducal and softer. Eisboch |
Mercrusier starter mounting bolt problem
"Eisboch" wrote in message ... wrote in message ... Stainless steel is not particularly stronger that ordinary steel. It's just stainless. If you want stronger then you need grade 5 or grade 7 bolts. -------------------- What he said. It's a common misconception that "stainless" is stronger than regular steel. To the contrary. There are many grades of steel that are much stronger than the common 304, 316 series of stainless. In fact, the stainless will be more ducal and softer. Eisboch |
Mercrusier starter mounting bolt problem
"Eisboch" wrote in message ... wrote in message ... Stainless steel is not particularly stronger that ordinary steel. It's just stainless. If you want stronger then you need grade 5 or grade 7 bolts. -------------------- What he said. It's a common misconception that "stainless" is stronger than regular steel. To the contrary. There are many grades of steel that are much stronger than the common 304, 316 series of stainless. In fact, the stainless will be more ducal and softer. Eisboch -------------------- And it galls and gets nuts stuck really easy if no lube is used. |
Mercrusier starter mounting bolt problem
"Tim" wrote in message ... On Aug 1, 6:57 pm, "Calif Bill" wrote: "Larry W" wrote in message ... Tim wrote: On Aug 1, 10:59 am, wrote: Stainless steel is not particularly stronger that ordinary steel. It's just stainless. If you want stronger then you need grade 5 or grade 7 bolts. The v8/v6 starter mounting has had that bracket from the back of the starter to the block for a long time. I'm surprised someone had to figure it out again on the 4 banger.- Hide quoted text - - Show quoted text - Grade 7? I ahven't ehard of 7, but am familiar with grade 8. I'm thinking that the reason that the brace was gone is probably because somebody had changed out the starter before and deemed the brace to be a PITA. and left it off with the thought of "We don't need that after all, all it is...is a bracket!" It was the original starter that failed and didn't have the bracket. I have since put my hands on some extra brackets to use on future similar jobs. Larry Problem with grade 8's etc. are they are too strong. They will loosen in a lot of applications as you can not get enough stretch to preload the bolt. Bill, you're probably correct, but that's what they make washers for.. Lock nuts. |
Mercrusier starter mounting bolt problem
On Aug 1, 7:57*pm, "Calif Bill" wrote:
"Larry W" wrote in message ... Tim wrote: On Aug 1, 10:59 am, wrote: Stainless steel is not particularly stronger that ordinary steel. It's just stainless. *If you want stronger then you need grade 5 or grade 7 bolts. The v8/v6 starter mounting has had that bracket from the back of the starter to the block for a long time. *I'm surprised someone had to figure it out again on the 4 banger.- Hide quoted text - - Show quoted text - Grade 7? *I ahven't ehard of 7, but am familiar with grade 8. I'm thinking that the reason that the brace was gone is probably because somebody had changed out the starter before and deemed the brace to be a PITA. and left it off with the thought of "We don't need that after all, all it is...is a bracket!" It was the original starter that failed and didn't have the bracket. I have since put my hands on some extra brackets to use on future similar jobs. Larry Problem with grade 8's etc. are they are too strong. *They will loosen in a lot of applications as you can not get enough stretch to preload the bolt..- Hide quoted text - - Show quoted text - My bad, I meant 8. You're right about the preload. You can get preload on stronger bolts but it takes a whole lot of tightening. Break out the torque wrench. But in a soft material like a cast block with that bolt size you'll probably strip the hole before you get enough. A grade 5 is usually appropriate for most cases where you need a stronger bolt. I used grade 5 on my alternator mount where I kept having bolts break. I have not found a source for stainless at higher strengths but I haven't looked very hard. Since I boat in fresh water it's not the end of the world if I use non-stainless sometimes. Lowes has the grade 5s in most common american sizes. |
Mercrusier starter mounting bolt problem
On Aug 4, 8:49*am, wrote:
On Aug 1, 7:57*pm, "Calif Bill" wrote: "Larry W" wrote in message ... Tim wrote: On Aug 1, 10:59 am, wrote: Stainless steel is not particularly stronger that ordinary steel. It's just stainless. *If you want stronger then you need grade 5 or grade 7 bolts. The v8/v6 starter mounting has had that bracket from the back of the starter to the block for a long time. *I'm surprised someone had to figure it out again on the 4 banger.- Hide quoted text - - Show quoted text - Grade 7? *I ahven't ehard of 7, but am familiar with grade 8. I'm thinking that the reason that the brace was gone is probably because somebody had changed out the starter before and deemed the brace to be a PITA. and left it off with the thought of "We don't need that after all, all it is...is a bracket!" It was the original starter that failed and didn't have the bracket. I have since put my hands on some extra brackets to use on future similar jobs. Larry Problem with grade 8's etc. are they are too strong. *They will loosen in a lot of applications as you can not get enough stretch to preload the bolt.- Hide quoted text - - Show quoted text - My bad, I meant 8. *You're right about the preload. *You can get preload on stronger bolts but it takes a whole lot of tightening. Break out the torque wrench. *But in a soft material like a cast block with that bolt size you'll probably strip the hole before you get enough. *A grade 5 is usually appropriate for most cases where you need a stronger bolt. *I used grade 5 on my alternator mount where I kept having bolts break. *I have not found a source for stainless at higher strengths but I haven't looked very hard. *Since I boat in fresh water it's not the end of the world if I use non-stainless sometimes. *Lowes has the grade 5s in most common american sizes.- Hide quoted text - - Show quoted text - Alternator bolts breaking? occasionally I can see that but consistantly? Somethings up. What's the application? Motorola? or delco?, and where does the bolt break? |
Mercrusier starter mounting bolt problem
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Mercrusier starter mounting bolt problem
On Aug 4, 1:31*pm, Tim wrote:
On Aug 4, 8:49*am, wrote: On Aug 1, 7:57*pm, "Calif Bill" wrote: "Larry W" wrote in message ... Tim wrote: On Aug 1, 10:59 am, wrote: Stainless steel is not particularly stronger that ordinary steel. It's just stainless. *If you want stronger then you need grade 5 or grade 7 bolts. The v8/v6 starter mounting has had that bracket from the back of the starter to the block for a long time. *I'm surprised someone had to figure it out again on the 4 banger.- Hide quoted text - - Show quoted text - Grade 7? *I ahven't ehard of 7, but am familiar with grade 8. I'm thinking that the reason that the brace was gone is probably because somebody had changed out the starter before and deemed the brace to be a PITA. and left it off with the thought of "We don't need that after all, all it is...is a bracket!" It was the original starter that failed and didn't have the bracket.. I have since put my hands on some extra brackets to use on future similar jobs. Larry Problem with grade 8's etc. are they are too strong. *They will loosen in a lot of applications as you can not get enough stretch to preload the bolt.- Hide quoted text - - Show quoted text - My bad, I meant 8. *You're right about the preload. *You can get preload on stronger bolts but it takes a whole lot of tightening. Break out the torque wrench. *But in a soft material like a cast block with that bolt size you'll probably strip the hole before you get enough. *A grade 5 is usually appropriate for most cases where you need a stronger bolt. *I used grade 5 on my alternator mount where I kept having bolts break. *I have not found a source for stainless at higher strengths but I haven't looked very hard. *Since I boat in fresh water it's not the end of the world if I use non-stainless sometimes. *Lowes has the grade 5s in most common american sizes.- Hide quoted text - - Show quoted text - Alternator bolts breaking? *occasionally I can see that but consistantly? Somethings up. What's the application? Motorola? or delco?, and where does the bolt break?- Hide quoted text - - Show quoted text - Custom brackets to mount the alternator on the lower side below #1 cylinder. Two much sideways pull on a couple long bolts :-( |
Mercrusier starter mounting bolt problem
Does anyone have a link to example pictures or catalog of the "L
shaped starter bracket" referred to earlier by billgran (Bill Grannis)? I have a 1999 Sylvan 21’ bow-rider with a 5.7L Mercruiser which I purchased used last year. I have had numerous problems with the starter failing to engage properly with the flywheel, have replaced starter motor 3 times, replaced the flywheel, had 2 different licensed Mercruiser mechanics charge me over 2K in repair bills and they both threw their hands up and stated they don’t know what is causing it to fail continually. I read these messages which got me thinking about the possibility of the starter shifting / flexing away from the flywheel. I jammed a wooden wedge between the starter housing and a longitudinal rib on the boat frame and I have not had a problem since. I am cautiously optimistic this is the cause of my problems and would like to locate a bracket to fix the starter robustly to the engine block and prevent shifting. If anyone has pictures or a link to a site showing this type of bracket, I would really appreciate it. I would prefer to buy a bracket off the shelf if possible or I could have one made up. Example pictures would be really useful in that case. Thanks, Mark "Billgran" wrote: "Larry W" wrote in message ... Just a heads-up to anyone replacing a starter in an I/O Mercrusier. I replaced one in a 3.0 about a month ago and it was the first starter that came with new mounting bolts. Customer called Sunday with a complaint that the starter was making a funny noise. Turns out the long mounting bolt had failed/sheared off (see link below). There was nothing unusual about the install and I know I didn't over tighten it. Quite a few years back, MercCruiser, Volvo, and OMC had starter bolt breakage problems with the 3.0L motor due to vibration the first year GM changed to the small-diameter permanent-magnet starter housing. Each company sent out service bulletins about, and incorporated into the following years line-up, an L-shaped bracket from the back of the new starter to the engine block. The bracket kept the starter from wobbling when the motor was idling, thus keeping the bolts intact without breaking. See your dealer for the bracket and hardware as I'm guessing that it was probably not installed and tightened like it should have been. One bolt on the back of the correct starter has a threaded stud for the bracket, lockwasher, and nut. There is a threaded hole in the engine block for a bolt to fasten the other end of the bracket. Bill Grannis service manager -- Posted at author's request, using moderated http://www.BoatingForumz.com interface Thread archive: http://www.BoatingForumz.com/Mercrus...pict99801.html |
Mercrusier starter mounting bolt problem
On Sep 8, 6:22*pm, mark wrote:
Does anyone have a link to example pictures or catalog of the "L shaped starter bracket" referred to earlier by billgran (Bill Grannis)? I have a 1999 Sylvan 21’ bow-rider with a 5.7L Mercruiser which I purchased used last year. I have had numerous problems with the starter failing to engage properly with the flywheel, have replaced starter motor 3 times, replaced the flywheel, had 2 different licensed Mercruiser mechanics charge me over 2K in repair bills and they both threw their hands up and stated they don’t know what is causing it to fail continually. I read these messages which got me thinking about the possibility of the starter shifting / flexing away from the flywheel. I jammed a wooden wedge between the starter housing and a longitudinal rib on the boat frame and I have not had a problem since. I am cautiously optimistic this is the cause of my problems and would like to locate a bracket to fix the starter robustly to the engine block and prevent shifting. If anyone has pictures or a link to a site showing this type of bracket, I would really appreciate it. I would prefer to buy a bracket off the shelf if possible or I could have one made up. Example pictures would be really useful in that case. Thanks, Mark Mark , If your starter is the full sized model (10MT delco) then send me your address and I'll mail you one. I have some just laying around. one is yours for the asking. It's the same bracket as off a 350/400/454 chevy truck from about 1976 up to about 2000. Tschnautz at g mail dot com |
Mercrusier starter mounting bolt problem
The bracket shape depends on the starter. Do you hare the Delco direct
drive unit-(5" dia motor, big/heavy) or the newer,smaller planetary drive starter. If big Delco, I have a bracket for you. JR mark wrote: Does anyone have a link to example pictures or catalog of the "L shaped starter bracket" referred to earlier by billgran (Bill Grannis)? I have a 1999 Sylvan 21’ bow-rider with a 5.7L Mercruiser which I purchased used last year. I have had numerous problems with the starter failing to engage properly with the flywheel, have replaced starter motor 3 times, replaced the flywheel, had 2 different licensed Mercruiser mechanics charge me over 2K in repair bills and they both threw their hands up and stated they don’t know what is causing it to fail continually. I read these messages which got me thinking about the possibility of the starter shifting / flexing away from the flywheel. I jammed a wooden wedge between the starter housing and a longitudinal rib on the boat frame and I have not had a problem since. I am cautiously optimistic this is the cause of my problems and would like to locate a bracket to fix the starter robustly to the engine block and prevent shifting. If anyone has pictures or a link to a site showing this type of bracket, I would really appreciate it. I would prefer to buy a bracket off the shelf if possible or I could have one made up. Example pictures would be really useful in that case. Thanks, Mark "Billgran" wrote: "Larry W" wrote in message ... Just a heads-up to anyone replacing a starter in an I/O Mercrusier. I replaced one in a 3.0 about a month ago and it was the first starter that came with new mounting bolts. Customer called Sunday with a complaint that the starter was making a funny noise. Turns out the long mounting bolt had failed/sheared off (see link below). There was nothing unusual about the install and I know I didn't over tighten it. Quite a few years back, MercCruiser, Volvo, and OMC had starter bolt breakage problems with the 3.0L motor due to vibration the first year GM changed to the small-diameter permanent-magnet starter housing. Each company sent out service bulletins about, and incorporated into the following years line-up, an L-shaped bracket from the back of the new starter to the engine block. The bracket kept the starter from wobbling when the motor was idling, thus keeping the bolts intact without breaking. See your dealer for the bracket and hardware as I'm guessing that it was probably not installed and tightened like it should have been. One bolt on the back of the correct starter has a threaded stud for the bracket, lockwasher, and nut. There is a threaded hole in the engine block for a bolt to fasten the other end of the bracket. Bill Grannis service manager -- -------------------------------------------------------------- Home Page: http://www.seanet.com/~jasonrnorth |
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