Author Topic: gx390  (Read 2336 times)

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Offline finn1

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gx390
« on: May 25, 2014, 08:31:09 PM »
hey guys when running a starter on a 390 do you use a plastic gear when using an arc flywheel? I know you do on the briggs. if so where do I get one, and how do you change it?  thanks bob


bob finnerty
2010-one time Lightning Larry Lanning beater
2010 creekside raceway mx champ

Offline finn1

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Re: gx390
« Reply #1 on: May 26, 2014, 08:39:48 PM »
anybody?
bob finnerty
2010-one time Lightning Larry Lanning beater
2010 creekside raceway mx champ

Offline docbro

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Re: gx390
« Reply #2 on: May 26, 2014, 11:11:01 PM »
I never had to change the stasrter gear, just used what came on the starter.   They WILL smoke the solenoid with a higher copression engine.  Most of the time, I try to turn it by hand past the compression stroke.
Kenny "Doc" Holder
2013 ULMRA FX Champion
2013 USLMRA 5th FXT
2012 USLMRA 3rd FX
2012 USLMRA 7th FXT
#606 GP, CP, BP, FX, FXT


Offline finn1

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Re: gx390
« Reply #3 on: May 27, 2014, 07:11:19 PM »
it doesn't tear up the ring gear at all?
bob finnerty
2010-one time Lightning Larry Lanning beater
2010 creekside raceway mx champ

Offline docbro

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Re: gx390
« Reply #4 on: May 27, 2014, 10:13:44 PM »
I am running two of these engines, one in FX and the other in FXS, they mesh fine with the ring gear.  The weak point is the solenoid on the starter itself.
Kenny "Doc" Holder
2013 ULMRA FX Champion
2013 USLMRA 5th FXT
2012 USLMRA 3rd FX
2012 USLMRA 7th FXT
#606 GP, CP, BP, FX, FXT

Offline Darkviper

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Re: gx390
« Reply #5 on: May 28, 2014, 06:13:27 AM »
I have same problem mine I'll have to spin it by hand off the compression stroke.
Jonathon Kaup
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Offline GRUBDIGGER

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Re: gx390
« Reply #6 on: May 28, 2014, 01:06:23 PM »
HAVE YOU ALL EVER TRIED 24 VOLTS? WORKS GREAT.  :D
JOHN HERRING
ARMA TECH
TRI-STATE RACING MOWER ASSC.
http://wwwtsrm.smfforfree.com/


Offline finn1

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Re: gx390
« Reply #7 on: May 28, 2014, 06:10:05 PM »
yes I remember. you don't have to have a battery on board for the pro x class right? nice to see ya grubby. thanks bob
bob finnerty
2010-one time Lightning Larry Lanning beater
2010 creekside raceway mx champ

 

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