mralex714 Posted October 11, 2015 Share #1 Posted October 11, 2015 The bike is 89 VR that was a complete running project (cosmetics). I would start it a couple of times a week and ride it a few blocks, then the starter died. I got a 4 brush form ebay and basically forgot about it and it sat since February. This past week I finally changed the starter and after having to break the gas cap to get good gas in it, I wanted to synch the carbs and they were really off. After a few days of that I went out today to try again and the starter would spin but no engine rotation. It never made noise like a starter clutch failure or sounded strange. So where do I start? Link to comment Share on other sites More sharing options...
Prairiehammer Posted October 11, 2015 Share #2 Posted October 11, 2015 I got a 4 brush form ebay... ...the starter would spin but no engine rotation. Not all Mitsuba SM13 series four brush starters will work on the Venture. The motor rotation may be clockwise or it may be counterclockwise, depending on the intended application. The armature pinion may project more or less depending on the intended application. The armature pinion teeth may have different pitch (number of teeth) depending on intended application. Is the starter a used starter from a Second Gen Venture or other 1991 and newer Yamaha XVZ1300? Or is it a new aftermarket starter? From your description, it seems that either the armature pinion is not engaged with the gear in the starter gear train or the rotation of the motor is incorrect and the one way sprag is not locking up because of it. It is possible also that the starter clutch (sprag) is seized in the freewheel position. Link to comment Share on other sites More sharing options...
mralex714 Posted October 12, 2015 Author Share #3 Posted October 12, 2015 The starter worked fine for several days while I was trying to synch the carbs. It stalled while I was making an adjustment it stalled so I called it a day. The next day is when I tried to start it is when it just spun. Link to comment Share on other sites More sharing options...
mralex714 Posted October 14, 2015 Author Share #4 Posted October 14, 2015 BTW the starter will spin with the bike in gear with the clutch lever out. Link to comment Share on other sites More sharing options...
Flyinfool Posted October 14, 2015 Share #5 Posted October 14, 2015 Dirty contacts in clutch switch will allow a start in gear and clutch not pulled. As for the starter spinning free when it used to work. Only thing I can think of is something broke in the starter gear train. Link to comment Share on other sites More sharing options...
mralex714 Posted October 15, 2015 Author Share #6 Posted October 15, 2015 I pulled the cover to take a look. Gears fell out when I took off the cover. I put them back on in the configuration you see. Is there anything other than the cover holding the gears in place? Link to comment Share on other sites More sharing options...
Flyinfool Posted October 15, 2015 Share #7 Posted October 15, 2015 From the pics I do not see anything wrong. As long as you are in there, turn the 72 tooth gear by hand it should only turn one way. When you put the cover back on, you MUST have a gasket or the gears WILL bind. Link to comment Share on other sites More sharing options...
mralex714 Posted October 16, 2015 Author Share #8 Posted October 16, 2015 From the pics I do not see anything wrong. As long as you are in there, turn the 72 tooth gear by hand it should only turn one way. When you put the cover back on, you MUST have a gasket or the gears WILL bind. I took the gears back off to spin the 72 tooth gear, turned freely in only one direction ,clockwise. This afternoon I hit the starter with the cover still off and everything worked as advertised. Before I put this thing back together I need to know what went wrong or is there something else I need to do before reassembly. I ask this also because the gaskets looked fairly new and maybe the PO had an issue or left something out. Link to comment Share on other sites More sharing options...
mralex714 Posted October 27, 2015 Author Share #9 Posted October 27, 2015 I am back to square one. I went to start the bike today and got nothing but the sound of a spinning starter with no engine rotation. Any other thoughts on what might be happening or what else I need to look at? Link to comment Share on other sites More sharing options...
Prairiehammer Posted October 27, 2015 Share #10 Posted October 27, 2015 It is possible also that the starter clutch (sprag) is seized in the freewheel position. I am back to square one. I went to start the bike today and got nothing but the sound of a spinning starter with no engine rotation. Any other thoughts on what might be happening or what else I need to look at? I suspect there is a fault in the starter clutch. Either broken springs, rusty and sticky rollers or worn/damaged clutch face on the 72 tooth gear (where the starter clutch 'sprag' engages) or cracked starter clutch, causing a failure to engage. Link to comment Share on other sites More sharing options...
mralex714 Posted October 28, 2015 Author Share #11 Posted October 28, 2015 I suspect there is a fault in the starter clutch. Either broken springs, rusty and sticky rollers or worn/damaged clutch face on the 72 tooth gear (where the starter clutch 'sprag' engages) or cracked starter clutch, causing a failure to engage. [ATTACH=CONFIG]102154[/ATTACH] Since I didn't have the usual noise with a bad starter clutch I thought maybe I would be spared this task. Link to comment Share on other sites More sharing options...
garyS-NJ Posted October 30, 2015 Share #12 Posted October 30, 2015 I was helping a friend with his '86 or 87 venture and had a starter issue where the starter would spin and squeal but only sometime engage the engine to turn the engine.. We took that cover off figuring we'd see something (I was guessing the flywheel key sheared) but nothing jumped out.. We even cranked the starter cover off while stabilizing the starter idler gear shafts. I gave him an old starter to try but suspect the starter clutch,. Link to comment Share on other sites More sharing options...
mralex714 Posted November 1, 2015 Author Share #13 Posted November 1, 2015 I suspect there is a fault in the starter clutch. Either broken springs, rusty and sticky rollers or worn/damaged clutch face on the 72 tooth gear (where the starter clutch 'sprag' engages) or cracked starter clutch, causing a failure to engage. [ATTACH=CONFIG]102154[/ATTACH] So I need the starter clutch and the 72 tooth gear? Link to comment Share on other sites More sharing options...
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