08 650 hard starts - Arctic Cat Prowler Forums: Prowler UTV Forum
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post #1 of 2 (permalink) Old 12-30-2010, 07:26 PM Thread Starter
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Join Date: Sep 2010
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08 650 hard starts

So I found out 2 new things while trying to get my rig started last night. It had a problem to where it would not crank past the compression stroke. Not battery. Not starter. Checked valves twice. So i pulled the top off of the engine and got to looking around and noticed a little spring on the cam. Did some research and making a guess that it is the decompression spring. I found the decompression spring and it had to much play in it. It is on the cam. It is a little speedbump mechanism on the cam to to open the exhaust valve just a hair. It looks like it uses centrifugal force to keep it closed once running at idle,kinda like a distributer. Anyways I trimmed a little off the spring and bent it to where it would pull tighter and obviosly it worked because she fired right up.

I also found that the elctric choke can be adjusted. You can follow the wires to the carb and rotate the whole assembly that the wires go into. I thought maybe I jacked something up but tried starting it at different settings and could definately tell a difference.

I guess the question is what is this thing actually called? Has anyone else had this problem or fix.
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post #2 of 2 (permalink) Old 12-30-2010, 08:15 PM
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Location: Pell City, Al.
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Thats very good info. Thanks for sharing.

ROLL TIDE ROLL!!!!


07 Prowler 650 H1 XT
3000lb. Warn winch
2" lift by Highlifter
30" Silverbacks on 14" SS112's
FMF Powercore exhaust
Dynatech CDI box
rejetted with Jets R Us OEM jets
stage 1&2 by ///AIRDAM
clocked secondary to B3
19 gram rollers (red)
2" snorkel by me
chrome skull shifter
LED tail lights in bed by me
fog lights
roof
custom doors by me
custom removable rear cage by me & friends
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