912uls kick back very bad

by stephane corbeil in 912 / 914 Technical Questions 13 years ago

hello everyone !!

i have an issue with a uls engine we perform everything new fltwheel,new starter,balence carb,soft start,you name it. the only thing i dindnt chage is the sparg clutch my consern is i never feel that the sprag clutch was slipping i feel over the past cltch was slipping and you can ear it slipping and on that case it doesnt seem to slip it violently stop the rotation like the hd starter can turn the engine its crasy

if anyone know about that problem let me know

regards stephane

Re: 912uls kick back very bad

by MARK JACKSON » 13 years ago

MARK JACKSON

12 332 11

Hi Stephane

Have you checked the friction torque of your gearbox. It is very easy to do, takes minutes, but tells you if you need to shim your gearbox. A lot of starting issues and rough running at low RPM is due to poor gearbox maintenance. It is explained in the video section. If the gearbox is good, then you need to change your sprag clutch as you will have damaged the fine spring in the sprag.

Good luck

Mark

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Re: 912uls kick back very bad

by stephane corbeil » 13 years ago

stephane corbeil

3 1 0

hi Mark

yes the gear box as been redone i think its my last resort is the sprag clutch i remember that engine wen it was new it was starting in -10 no problem now at 0 or 32f foreget it it been 3 years now its very hard to start ,soon it start it run like new

thanks stephane

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912uls kick back very bad

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