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Rpm

xtremeclean77

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Nov 4, 2010
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Michael Mock
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I need some help adjusting my rpm. I have prochem apex and rpm are low. I just need some help on how to adjust them and bring them back up. Thank you for any help
 

james n

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Mar 14, 2009
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I need some help adjusting my rpm. I have prochem apex and rpm are low. I just need some help on how to adjust them and bring them back up. Thank you for any help
I had the same issue with my apex. How low is it and how are you measuring it ?
 

james n

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Mar 14, 2009
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I got a tachometer and checked it. It’s running between 2000 and 2100 full throttle no load or water pump
Did you check to make sure the tach is accurate? I checked it on my snowmobile to make sure it’s accurate.
 

james n

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Mar 14, 2009
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Yes, it’s accurate
Mine had a throttle limiter on the throttle cable. I took it off and adjusted it to proper rpms. Can you take a pic of it ? I called legends and they couldn’t help me. They stopped making the apex and prochem was bought out.
 

xtremeclean77

New Member
Nov 4, 2010
22
1
3
Florida
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Michael Mock
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United States
Mine had a throttle limiter on the throttle cable. I took it off and adjusted it to proper rpms. Can you take a pic of it ? I called legends and they couldn’t help me. They stopped making the apex and prochem was bought out.

I have a governor on mine which limits throttle all of the machines do as far as I know. I just didn’t realize mine was so far off. I’m sure it was gradual over time and I just got used to the way it was sounding. I’ve been playing with it and got it to come up some but just wanted to make sure if I got too involved with it I was doing it the correct way. There’s got to be a way to get it back to where it should be without taking the governor off. I was just hoping someone may have some experience in doing this.
b055041b1ac6d7bb4f707c7b24d15135.jpg
 

james n

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Mar 14, 2009
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james niwinski
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I have a governor on mine which limits throttle all of the machines do as far as I know. I just didn’t realize mine was so far off. I’m sure it was gradual over time and I just got used to the way it was sounding. I’ve been playing with it and got it to come up some but just wanted to make sure if I got too involved with it I was doing it the correct way. There’s got to be a way to get it back to where it should be without taking the governor off. I was just hoping someone may have some experience in doing this.
b055041b1ac6d7bb4f707c7b24d15135.jpg
3037C9F8-6593-4265-A2A5-EBB465C23A4F.jpeg
3037C9F8-6593-4265-A2A5-EBB465C23A4F.jpeg
that thing I circled stops you from increasing the RPMs. I took mine off to get it to 2800
I don’t know if it’s the correct way but no one could help me. I posted your same question here and other forums and got lectured how I didn’t know my machine. Again not sure if that’s the correct was to adjust to the proper RPMs but I got mine to 2800 by removing that silver piece. The closest distributor is hours away from me so I tried myself.
 

xtremeclean77

New Member
Nov 4, 2010
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Florida
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Michael Mock
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United States
View attachment 94173View attachment 94173
that thing I circled stops you from increasing the RPMs. I took mine off to get it to 2800
I don’t know if it’s the correct way but no one could help me. I posted your same question here and other forums and got lectured how I didn’t know my machine. Again not sure if that’s the correct was to adjust to the proper RPMs but I got mine to 2800 by removing that silver piece. The closest distributor is hours away from me so I tried myself.

I’m in the same boat as far as distributors go. I got mine to 2600 without taking anything off. Do your rpms seem to run consistent without the limiter? I might take mine off and see how it goes, I could tell a huge difference running at 2600
 

james n

Active Member
Mar 14, 2009
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james niwinski
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I’m in the same boat as far as distributors go. I got mine to 2600 without taking anything off. Do your rpms seem to run consistent without the limiter? I might take mine off and see how it goes, I could tell a huge difference running at 2600
I put a spring on instead of the silver piece and was able to adjust it to 2800. The spring has flexibility And it made a huge difference when I got it to 2800.