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mike932 PM mike932 mike932's Posts mike932's Threads Scooter Doc Currently Offline Posts: 276 Likes: 23 Joined: Feb 5, 2015 19:36:42 GMT -6	Starting problems by: mike932 - Apr 30, 2015 16:33:45 GMT -6 Reply Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by mike932 on Apr 30, 2015 16:33:45 GMT -6 I have a 1988 Yamaha Riva. It took me 7 tries to start it today. The first 6 times, all I got was a smooth humming sound. Please see video and give me your opinion..... youtube video of starting probem
	My first scooter was a used 125cc 1988 Yamaha Riva. I put 10,000 miles on that scooter. My current scooter is a Genuine Buddy 170i.

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Starting problems by: Alleyoop - Apr 30, 2015 17:43:42 GMT -6

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Post by Alleyoop on Apr 30, 2015 17:43:42 GMT -6

Is that a 50cc or a 150+ cc motor? It sounds like a BENDIX not engaging if its a 50cc or if your scoot is a 150cc your starter clutch slipping.

Do you know if you have a Starter Clutch or Bendix in the CVT?
Alleyoop

..BAD TO THE BONE..

PST150H 62mm BBK, 60mm Crank, 16/37 Tranny Gears............................................... MOW-POWER

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cyborg PM cyborg cyborg's Posts cyborg's Threads Forum Admin Currently Offline what i've learned is i'm still learning Posts: 6,404 Likes: 407 Joined: Nov 3, 2013 11:24:53 GMT -6	Starting problems by: cyborg - Apr 30, 2015 17:45:47 GMT -6 via mobile Reply Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by cyborg on Apr 30, 2015 17:45:47 GMT -6 Starter clutch ,, either bad or needs attention and is sticking and not doing it's job
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mike932 PM mike932 mike932's Posts mike932's Threads Scooter Doc Currently Offline Posts: 276 Likes: 23 Joined: Feb 5, 2015 19:36:42 GMT -6	Starting problems by: mike932 - Apr 30, 2015 17:46:45 GMT -6 mike932 likes this Reply Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by mike932 on Apr 30, 2015 17:46:45 GMT -6 125cc japanese motor. It does have a starter clutch. Here is the service manual..... www.motorscooterguide.net/Manuals/Yamaha_XC125_Service_Manual.pdf
	Last Edit: Apr 30, 2015 18:00:54 GMT -6 by mike932 My first scooter was a used 125cc 1988 Yamaha Riva. I put 10,000 miles on that scooter. My current scooter is a Genuine Buddy 170i.

mike932 PM mike932 mike932's Posts mike932's Threads Scooter Doc Currently Offline Posts: 276 Likes: 23 Joined: Feb 5, 2015 19:36:42 GMT -6	Starting problems by: mike932 - Apr 30, 2015 17:52:11 GMT -6 Reply Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by mike932 on Apr 30, 2015 17:52:11 GMT -6 Which of the following items do I need to order?...... www.cheapcycleparts.com/oemparts/a/yam/5003ad27f8700212fc83b81c/starter-clutch
	Last Edit: Apr 30, 2015 18:08:48 GMT -6 by mike932 My first scooter was a used 125cc 1988 Yamaha Riva. I put 10,000 miles on that scooter. My current scooter is a Genuine Buddy 170i.

Alleyoop PM Alleyoop Alleyoop's Posts Alleyoop's Threads Forum Admin Currently Offline Posts: 13,815 Likes: 457 Joined: Mar 30, 2010 22:06:05 GMT -6	Starting problems by: Alleyoop - Apr 30, 2015 18:13:25 GMT -6 Reply Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by Alleyoop on Apr 30, 2015 18:13:25 GMT -6 Number 9 the starter clutch assembly. Alleyoop
	..BAD TO THE BONE.. PST150H 62mm BBK, 60mm Crank, 16/37 Tranny Gears............................................... MOW-POWER FROM THE BOOK OF KNOWLEDGE: THE THINGS YOU DO FOR YOURSELF ARE GONE WHEN YOU DIE, BUT THE THINGS YOU DO FOR OTHERS REMAIN AS YOUR LEGACY.

mike932 PM mike932 mike932's Posts mike932's Threads Scooter Doc Currently Offline Posts: 276 Likes: 23 Joined: Feb 5, 2015 19:36:42 GMT -6	Starting problems by: mike932 - Apr 30, 2015 18:15:26 GMT -6 Reply Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by mike932 on Apr 30, 2015 18:15:26 GMT -6 Apr 30, 2015 18:13:25 GMT -6 Alleyoop said: Number 9 the starter clutch assembly. Alleyoop Simply replacing that should solve the problem?
	My first scooter was a used 125cc 1988 Yamaha Riva. I put 10,000 miles on that scooter. My current scooter is a Genuine Buddy 170i.

Alleyoop PM Alleyoop Alleyoop's Posts Alleyoop's Threads Forum Admin Currently Offline Posts: 13,815 Likes: 457 Joined: Mar 30, 2010 22:06:05 GMT -6	Starting problems by: Alleyoop - Apr 30, 2015 18:19:37 GMT -6 Reply Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by Alleyoop on Apr 30, 2015 18:19:37 GMT -6 Yes it should fix the problem unless the gears are missing teeth which I doubt. Alleyoop
	..BAD TO THE BONE.. PST150H 62mm BBK, 60mm Crank, 16/37 Tranny Gears............................................... MOW-POWER FROM THE BOOK OF KNOWLEDGE: THE THINGS YOU DO FOR YOURSELF ARE GONE WHEN YOU DIE, BUT THE THINGS YOU DO FOR OTHERS REMAIN AS YOUR LEGACY.

mike932 PM mike932 mike932's Posts mike932's Threads Scooter Doc Currently Offline Posts: 276 Likes: 23 Joined: Feb 5, 2015 19:36:42 GMT -6	Starting problems by: mike932 - Apr 30, 2015 18:26:24 GMT -6 Reply Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by mike932 on Apr 30, 2015 18:26:24 GMT -6 Thanks very much
	My first scooter was a used 125cc 1988 Yamaha Riva. I put 10,000 miles on that scooter. My current scooter is a Genuine Buddy 170i.

cyborg PM cyborg cyborg's Posts cyborg's Threads Forum Admin Currently Offline what i've learned is i'm still learning Posts: 6,404 Likes: 407 Joined: Nov 3, 2013 11:24:53 GMT -6	Starting problems by: cyborg - Apr 30, 2015 19:27:44 GMT -6 Reply Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by cyborg on Apr 30, 2015 19:27:44 GMT -6 The manual calls for inspection ,,,hey look it over when you get it out it may just be dry and the one way clutch needs lube
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mike932 PM mike932 mike932's Posts mike932's Threads Scooter Doc Currently Offline Posts: 276 Likes: 23 Joined: Feb 5, 2015 19:36:42 GMT -6	Starting problems by: mike932 - Apr 30, 2015 19:39:49 GMT -6 Reply Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by mike932 on Apr 30, 2015 19:39:49 GMT -6 Help me understand how it works. The starter clutch rotates which makes a roller bearing contact the camshaft until it starts?
	My first scooter was a used 125cc 1988 Yamaha Riva. I put 10,000 miles on that scooter. My current scooter is a Genuine Buddy 170i.

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Starting problems by: cyborg - Apr 30, 2015 19:48:38 GMT -6

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Post by cyborg on Apr 30, 2015 19:48:38 GMT -6

The starter clutch is what's called a sprague clutch,,,,I would pull it and take a look inside,,,,it could be fried,,,or it may just be dry and sticking,,,,the replacement is only $100 but it may be fine,,,can't tell until you get a look at it

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mike932 PM mike932 mike932's Posts mike932's Threads Scooter Doc Currently Offline Posts: 276 Likes: 23 Joined: Feb 5, 2015 19:36:42 GMT -6	Starting problems by: mike932 - Apr 30, 2015 19:55:42 GMT -6 Reply Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by mike932 on Apr 30, 2015 19:55:42 GMT -6 en.wikipedia.org/wiki/Sprag_clutch so it's like a bicycle freewheel? Engages when activated, then just glides?
	My first scooter was a used 125cc 1988 Yamaha Riva. I put 10,000 miles on that scooter. My current scooter is a Genuine Buddy 170i.

cyborg PM cyborg cyborg's Posts cyborg's Threads Forum Admin Currently Offline what i've learned is i'm still learning Posts: 6,404 Likes: 407 Joined: Nov 3, 2013 11:24:53 GMT -6	Starting problems by: cyborg - Apr 30, 2015 20:04:22 GMT -6 via mobile Reply Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by cyborg on Apr 30, 2015 20:04:22 GMT -6 Yep it's a one way clutch,,, what year is the bike and how many miles?
	RIDE THEM LIKE YOU MEAN IT!

mike932 PM mike932 mike932's Posts mike932's Threads Scooter Doc Currently Offline Posts: 276 Likes: 23 Joined: Feb 5, 2015 19:36:42 GMT -6	Starting problems by: mike932 - Apr 30, 2015 20:10:33 GMT -6 Reply Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by mike932 on Apr 30, 2015 20:10:33 GMT -6 1988 yamaha riva 125cc. 22,000 miles. Here is a great photo of the starter clutch that it uses... www.amazon.com/Yamaha-4KL155700000-Starter-Clutch-Assembly/dp/B005C5A1V6
	My first scooter was a used 125cc 1988 Yamaha Riva. I put 10,000 miles on that scooter. My current scooter is a Genuine Buddy 170i.