Recent posts by tortoise | It Is The Ride

tortoise PM tortoise tortoise's Posts tortoise's Threads Senior Rider Currently Offline Posts: 508 Likes: 49 Joined: Dec 25, 2015 14:02:32 GMT -5	Not getting vacuum to operate petcock by: tortoise - Sept 12, 2016 12:28:15 GMT -5 Reply Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by tortoise on Sept 12, 2016 12:28:15 GMT -5 Would the lack of a vacuum be a symptom of a leaky intake manifold? Potentially! Verify manifold vacuum port is not obstructed, and inspect reeds.

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2013 Yamaha Zuma bogs down by: tortoise - Sept 9, 2016 13:06:54 GMT -5

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Post by tortoise on Sept 9, 2016 13:06:54 GMT -5

2013 Yamaha Zuma 50F . . clean the carburetor

Fuel injected.

Might try adding around 3 tablespoons of Berryman B-12 when refilling the gas tank . . available at Walmart.

If not something relatively simple, like a deficient spark plug cap . . might research throttle position sensor.

Last Edit: Sept 9, 2016 13:44:52 GMT -5 by tortoise

tortoise PM tortoise tortoise's Posts tortoise's Threads Senior Rider Currently Offline Posts: 508 Likes: 49 Joined: Dec 25, 2015 14:02:32 GMT -5	Have you been watching "Harley and the Davidsons"? by: tortoise - Sept 7, 2016 8:55:11 GMT -5 Reply Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by tortoise on Sept 7, 2016 8:55:11 GMT -5 Discovery Channel

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139QMB Variator Inspection Technique by: tortoise - Sept 5, 2016 6:11:37 GMT -5

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Post by tortoise on Sept 5, 2016 6:11:37 GMT -5

First video shows how to observe if 139QMB variator is functioning properly while engine is running with electric starter bendix removed. Second video shows typical variator wear. No affiliation with either.

tortoise PM tortoise tortoise's Posts tortoise's Threads Senior Rider Currently Offline Posts: 508 Likes: 49 Joined: Dec 25, 2015 14:02:32 GMT -5	In desperate need of good information & parts by: tortoise - Sept 4, 2016 12:26:31 GMT -5 Reply Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by tortoise on Sept 4, 2016 12:26:31 GMT -5 Parts For Scooters may be another resource . . GY6B 57mm stud spacing compared to the standard GY6 54mm
	Last Edit: Sept 4, 2016 13:06:51 GMT -5 by tortoise

tortoise PM tortoise tortoise's Posts tortoise's Threads Senior Rider Currently Offline Posts: 508 Likes: 49 Joined: Dec 25, 2015 14:02:32 GMT -5	throttle stuck all the open by: tortoise - Aug 31, 2016 13:42:30 GMT -5 Reply Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by tortoise on Aug 31, 2016 13:42:30 GMT -5 There are numerous Las Vegas scooter repair shops . . check if AFR is still in business. One thing to check . . .
	Last Edit: Aug 31, 2016 14:01:44 GMT -5 by tortoise

tortoise PM tortoise tortoise's Posts tortoise's Threads Senior Rider Currently Offline Posts: 508 Likes: 49 Joined: Dec 25, 2015 14:02:32 GMT -5	How to post pictures by: tortoise - Aug 30, 2016 15:07:28 GMT -5 Reply Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by tortoise on Aug 30, 2016 15:07:28 GMT -5 Guidelines

tortoise PM tortoise tortoise's Posts tortoise's Threads Senior Rider Currently Offline Posts: 508 Likes: 49 Joined: Dec 25, 2015 14:02:32 GMT -5	Need help with 139QMB engine by: tortoise - Aug 28, 2016 13:52:31 GMT -5 Reply Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by tortoise on Aug 28, 2016 13:52:31 GMT -5 The woodruff key is on the stator side engine correct? Correct

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Need help with 139QMB engine by: tortoise - Aug 28, 2016 0:37:11 GMT -5

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Post by tortoise on Aug 28, 2016 0:37:11 GMT -5

Retimmed the cam to the flywheel

Insert a probe into the spark plug hole. With piston at top-dead-center, observe if flywheel "T" timing mark is aligned. Sometimes the crankshaft woodruff key will shear.

Still only barely idle between 1/2 and 3/4 throttle.

Verify insulator-spacer between head and intake manifold is properly oriented on the 2 studs (not obstructing intake port), and is not cracked (causing a vacuum leak).

tortoise PM tortoise tortoise's Posts tortoise's Threads Senior Rider Currently Offline Posts: 508 Likes: 49 Joined: Dec 25, 2015 14:02:32 GMT -5	Odometer Confusion by: tortoise - Aug 27, 2016 10:46:02 GMT -5 Reply Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by tortoise on Aug 27, 2016 10:46:02 GMT -5 changed to a Chinese digital speedometer For others curious . . related discussion.

tortoise PM tortoise tortoise's Posts tortoise's Threads Senior Rider Currently Offline Posts: 508 Likes: 49 Joined: Dec 25, 2015 14:02:32 GMT -5	Need help with 139QMB engine by: tortoise - Aug 26, 2016 12:00:35 GMT -5 Reply Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by tortoise on Aug 26, 2016 12:00:35 GMT -5 not even sure how the carb slide works

tortoise PM tortoise tortoise's Posts tortoise's Threads Senior Rider Currently Offline Posts: 508 Likes: 49 Joined: Dec 25, 2015 14:02:32 GMT -5	GY6 125/150cc Variator Videos by: tortoise - Aug 26, 2016 10:33:07 GMT -5 Reply Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by tortoise on Aug 26, 2016 10:33:07 GMT -5 First one might help those troubleshooting CVT "rumbling". Second one shows $110 DR3 variator and Flying Roller weights. No affiliation to either.

tortoise PM tortoise tortoise's Posts tortoise's Threads Senior Rider Currently Offline Posts: 508 Likes: 49 Joined: Dec 25, 2015 14:02:32 GMT -5	Need help with 139QMB engine by: tortoise - Aug 26, 2016 10:13:22 GMT -5 Reply Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by tortoise on Aug 26, 2016 10:13:22 GMT -5 So you think it's mechanical then, and not a electric safety thing? Insufficient information . . but you need to determine why carb slide is not rising.

tortoise PM tortoise tortoise's Posts tortoise's Threads Senior Rider Currently Offline Posts: 508 Likes: 49 Joined: Dec 25, 2015 14:02:32 GMT -5	Need help with 139QMB engine by: tortoise - Aug 25, 2016 20:35:45 GMT -5 Reply Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by tortoise on Aug 25, 2016 20:35:45 GMT -5 If a Dazon Stinger 139QMB engine . . check intake/exhaust valve clearance, inspect intake manifold for vacuum leaks, and carb diaphragm for tears. Observe if carb slide is rising properly.
	Last Edit: Aug 25, 2016 20:41:39 GMT -5 by tortoise

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New to Scooters by: tortoise - Aug 24, 2016 11:48:06 GMT -5

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Post by tortoise on Aug 24, 2016 11:48:06 GMT -5

Aug 24, 2016 10:56:49 GMT -5 oldcoot said:

try to get used to no-foot-brake-no-clutch-no-gears riding. It's hard to teach this old coot new tricks... especially when it's so easy! I've been riding 50+ years, but this seems odd to my old brain.

At least the 15 inch wheel steering geometry will feel more motorcycle-like . . as compared to 10 inch scooter wheels.

cdwise completed the 2014 and 2016 Scooter Cannonball cross-country on a SportCity 250.

Last Edit: Aug 24, 2016 11:54:03 GMT -5 by tortoise