Throttle Adjustment - Polaris ATV Forum
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post #1 of 9 (permalink) Old 03-20-2011, 08:49 PM Thread Starter
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Throttle Adjustment

Ok, my service manual doesn't have anything specific on adjusting the RPM's so I wanted to ask a quick question. Using the detail sheet from Motorcycle Tires, Discount OEM Motorcycle Parts, Motorcycle Apparel, Motorcycle Accessories, Motorcycle Helmets, Motorcycle Jackets, Motorcycle Gloves under the carburetor section for an '01 Sportsman 500 HO 4x4, I wanted to know if the RPM adjuster part was #34? This will make things a lot easier tomorrow once I get going on getting the reverse gear to properly shift. My plan of attack is: 1) replacing the tranny fluid. 2) adjusting the shift rod. 3) Dialing the RPM's back just a bit (I hear slight grinding when I try to put in in reverse from an idle). With any luck after I complete these I will have a "smooth as silk" shifter! Thanks for the help everyone!

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post #2 of 9 (permalink) Old 03-21-2011, 05:40 AM
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I would say YES, part #34 is the adjuster for the idle. The drawing while showing all parts doesn't lend itself to what the parts actually do.

But get the motor running and warmed up and turn it. If the idle changes you have it. Any fuel screws will be more guarded and need to either have covers removed or use a screw driver to adjust. You will not hurt anything, just return it back to where it was and your back to square.

If you hear grinding you have the idle too high.

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post #3 of 9 (permalink) Old 03-21-2011, 06:35 AM
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Idle RPM should be between 950-1050 RPMS.
~Phil
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post #4 of 9 (permalink) Old 03-21-2011, 06:48 AM Thread Starter
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Thanks. Getting it dialed in between 950-1050 will be tough as there isn't a way for me to check that. The instrument panel doesn't have anything for me to gauge it by. Don't they make a device that helps you with that? I know when I used to fly RC planes we had something that we held by the prop and it would give us a good estimate of our rpm's. I'll make sure I make a mark on that screw before I start adjusting anything. Thanks again for the help!

2001 Sportsman 500 HO 4x4:
K&N Filter
Warn 2500# Winch
Heated Hand Grips
60" Polaris Razor Plow
26" Mud Lite XL Tires
Aftermarket Wheels

2008 Sportsman 300 4x4:
Upgrades soon to come!
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post #5 of 9 (permalink) Old 03-21-2011, 06:50 AM
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They make a device that is like a timing light, you hook it on the coil wire and it tells you how many RPM's. Some electrical tester multitools have it built in also.
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post #6 of 9 (permalink) Old 12-22-2011, 12:37 PM
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what is part number 45? I thought that was the idle adjuster...
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post #7 of 9 (permalink) Old 12-22-2011, 05:58 PM
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We have the same bike and here is a couple of pics showing where it is...in the first pic , a screwdriver is pointing to it....
I'm currently having clutch belt issues....I made a primary clutch puller out of 3/4 fine threaded rod. (I have 3 extra) I also just made a clutch holder tool out of wood (all info seen on this site) and now I'll make a spider turning tool....lots of fun!

Good luck...

Kevin
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post #8 of 9 (permalink) Old 12-22-2011, 06:55 PM
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yeah thats what I thought. But thats not part 34 like in the above thread. Thats part 45. 34 is an adjuster. But for what, I have no idea. But the idle adjuster is what your pointing too...When you get a chance, go on the parts site and confirm it...
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post #9 of 9 (permalink) Old 12-23-2011, 08:02 AM
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Ok.....I checked the parts site like you asked.... my guess is #45 is the idle adjustment (rpm) like in my picture and #34 is your
" air/fuel " mixture screw. This should adjust lean and rich fuel conditions. Not something you need to play with now....

Kevin
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