Power valves 98 SRX

H

hdboug

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Joined
Jan 14, 2012
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5
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Haliburton Ont
I am trying to set my cable adjustment.Read the crap out of everything I can find.When I start the engine my indicator light reads proper blinks.The servo motor goes directly to full open valve position.At an idle the valves should be at closed position or am I wrong?I slackened my cables so I dont pull too hard and damage anything till I get info I can understand.
 

remove servo cover, idle sled below 900 rpm either with choke or turn down idle adjuster, you should see the servo goto full open. hit killswitch. mark servo in full open position. adjust.
 
Thankyou,I get it now.The cables are set full open to give 2.5 mm gap for play so it wont pull the bead off the cable or stretch the cable.
 
There is also a single wire that comes from the servo, if you unplug it the servo will open fully. no need to idle down to set the valves
 
kirk700 srx said:
There is also a single wire that comes from the servo, if you unplug it the servo will open fully. no need to idle down to set the valves
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Interesting, did not know that. I have e start now so easy for me but thats a great tip for the non e start sleds. Are you talking about the bullet connection single wire to clarify?
 
Worried

I just tested this with the servo cover off, and it works. But now im worried because it turned 3.5 mm past my old mark when using the choke method to idle below the 900 rpm. Im starting to wonder now if that method is bunk. I NEED ANSWERS, lol


Wondering if the choke method stalls engine before it has a chance to make the full counter-clockwise rotation.
 
Last edited:
Wondering if the choke method stalls engine before it has a chance to make the full counter-clockwise rotation.
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I use a battery to open my servo now but back when I used the idle down method I always just turned down the idle adjuster because the choke method would always stall mine out too. try turning down the idle adjuster and see if that jives with your choke mark or kirks method. I'm curious too as I hadn't heard that method before. if it works it's certainly an easier option.
 
I just read all the power valve adjustment threads and I also dont understand how the "battery" method works. If you power up the servo with 12 volts it will turn counter=clockwise untill the cable are fully stretched and bounce back! So if the servo had no cables attached it would spin indefinitely--its a motor.
 
staggs65 said:
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I use a battery to open my servo now but back when I used the idle down method I always just turned down the idle adjuster because the choke method would always stall mine out too. try turning down the idle adjuster and see if that jives with your choke mark or kirks method. I'm curious too as I hadn't heard that method before. if it works it's certainly an easier option.
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Staggs65, I once tried adjusting the idle screw to drop the idle and the tors switch came un-threaded. What a disaster that was.
 
from my old RC car days way back servos only go so far and stop. what stops them I couldn't tell you. I always loosen my cables before I put power to the servo so I know it's actually at full open and not being stopped by the valves. works for me but I'm a little different according to my wife
 
staggs65 said:
from my old RC car days way back servos only go so far and stop. what stops them I couldn't tell you. I always loosen my cables before I put power to the servo so I know it's actually at full open and not being stopped by the valves. works for me but I'm a little different according to my wife
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Here's the funny part. I loosened the cable adjusters all the in, applied the power source and it would just turn the servo all way stretching the cables and then bounce back alittle when power was removed.
 
lol. I just went and checked too. I first powered mine up as usual with cables in and loose. stopped at my usual mark. turned clockwise, removed cables and powered up again. turned counter-clockwise and stopped at my usual mark again. I'd say there is something wrong with your servo. but hey, maybe somethings wrong with mine.
 
motorhead327 said:
Yup I just checked. Removed pulley from servo, powered up and it will spin forever until power is removed.
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how are you powering it up? all 3 of my sleds have the harness for adjusting on them (there when I bought them). not sure how they're wired as I never needed to check but maybe something with how they're wired: through the cdi or something?
 
if u had to loosen the throttle screw that far then the cable is prob setting the idle
 
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