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June 20th, 2023, 03:46 PM
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#1 |
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ninjette.org newbie
Name: Robert
Location: North Alabama
Join Date: Jun 2023 Motorcycle(s): '94 Ninja zx6e, 2013 WR450f, 2007 Ninja 250r Posts: 2
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Starter Gear Case Rub
Hi Everyone,
I recently picked up a 2007 250 for cheap to fix for my wife to learn to ride. The po had an issue with the starter, replaced the starter, then gave up and sold it. I got it and pulled the rotor/flywheel and found the starter gear had sheared from the hub where it is welded together. Also the sprags were damaged, so I got a part out rotor/starter clutch/starter gear. When I bolted the rotor assembly to the crank the starter gear rubs a protrusion on the case behind the gear. I also noticed some minor in out play in the crank, no up down or left right play. So now I'm considering clearanceing the protrusion with a file, but before I go any further I thought I would ask if anyone else had encountered this. Is the axial play in the crank normal or a serious problem? I looked in the manual and I think 0.4mm of thrust play is the upper limit but I haven't measured it on the engine yet. Thanks! 20230616_155007.jpg |
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June 20th, 2023, 05:59 PM
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#2 |
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ninjette.org certified postwhore
Name: AKA JacRyann
Location: Mesa, AZ
Join Date: Dec 2011 Motorcycle(s): CB125T CBR250R-MC19 CBR250RR-MC22 NSR350R-MC21 VF500F CBR600RR SFV650 VFR750F R1M ST1300PA Valkyrie-F6C Posts: A lot.
MOTY - 2018, MOTM - Nov '17
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Greetings & Salutations Robert!!!
 Are you really having axial play at crank? Please post photo of this protrusion that starter-gear is rubbing on. Seems very odd... |
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June 20th, 2023, 07:54 PM
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#3 |
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Guy Who Enjoys Riding
Name: Jim
Location: North Carolina
Join Date: Jul 2016 Motorcycle(s): Ninja 250 Posts: A lot.
MOTM - Oct '18, Aug '17, Aug '16
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The spec for axial play is 16 thousandths of an inch, which you should be able to feel. Measuring what you actually have is a good idea, of course.
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June 21st, 2023, 12:39 PM
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#4 |
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ninjette.org newbie
Name: Robert
Location: North Alabama
Join Date: Jun 2023 Motorcycle(s): '94 Ninja zx6e, 2013 WR450f, 2007 Ninja 250r Posts: 2
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20230621_143128.jpg
There is the part of the case rubbing the starter gear, here in a bit I will track down a dial gauge and measure the play but it feels pretty minimal, at least less than I remember. Thanks so much for the replies, this seems like a great community! |
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