96 500 sportsman
#1
96 500 sportsman
Hey guys, just picked up a 500 sportsman. But got an odd issue.
Has spark has good compression but still won't fire. And when it did it poped back thru the carb. Reset cam timing, played with mag timing as well.
Any ideas?
Just picked it up the other day, needs a few things to getr back upto shape( gas tank, rear brake rotor, pull start) and I think the starters gettin weak, won't crank passed tdc now that I've redone cam and mag timing( stiff, but can do it by hand tho)
Has spark has good compression but still won't fire. And when it did it poped back thru the carb. Reset cam timing, played with mag timing as well.
Any ideas?
Just picked it up the other day, needs a few things to getr back upto shape( gas tank, rear brake rotor, pull start) and I think the starters gettin weak, won't crank passed tdc now that I've redone cam and mag timing( stiff, but can do it by hand tho)
#2
Average compression should be between 55-90 psi or so because of the decompression feature of the cam shaft. Check your exhaust cam lobe as they had problems with soft heat treated cams on the 1996-2000 500 engines.Hard starting,popping back through the carb was a couple of the symptoms. Here's one that was ground down on a Scrambler 500. Bad Cam Pic - ATVConnection.com ATV Enthusiast Community Plus if the cam is ok,simple things like a cam detent lever return spring broken or out of place,stator timing off, can make turning the engine over hard on the electric starter.
#5
#6
Can get them fairly cheap. Plus if mine I'd replace the bendix as it takes a beating also. Couple places you can look at plus plenty more on ebay.DB Electrical - Sportsman
http://www.ebay.com/itm/Starter-Drive-FITS-POLARIS-SPORTSMAN-500-HO-EFI-RSE-96-10-/280638338860?pt=Motors_ATV_Parts_Accessories&hash=item415759372c&vxp=mtr
http://www.ebay.com/itm/Starter-Drive-FITS-POLARIS-SPORTSMAN-500-HO-EFI-RSE-96-10-/280638338860?pt=Motors_ATV_Parts_Accessories&hash=item415759372c&vxp=mtr
#7
Thats the cool thing, you can aftermarket starters for just about anything online with quality equal to or better than oem for a fraction of the cost. Those oem starters, especially Polaris, are really expensive. Finding a part for $50 instead of $300 will make for a much better day. I'm going to save this db electrical site as I need to get a starter for my rancher, been content to pull start it as starter went out recently. Its pretty easy to pull start though, guess that's the one time not having big power is an advantage lol.
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#8
It get worst then that Polaris just has a insane mark up even on parts they do not make.
Example : I needed a new fan and my dealer wanted $300 for a new one. The OEM fan is made by SPAL of Italy and mine was the model VA09-AP12/C-54A FAN (11") Polaris Part #2410288 .
I found a new fan on Ebay for $85 shipped , when I received the Fan sure enough it was a SPAL model VA09-AP12/C-54A Spal's part# 30100411 .
Not a aftermarket fan, but the exact same fan as the original . Talk about a mark up.
Example : I needed a new fan and my dealer wanted $300 for a new one. The OEM fan is made by SPAL of Italy and mine was the model VA09-AP12/C-54A FAN (11") Polaris Part #2410288 .
I found a new fan on Ebay for $85 shipped , when I received the Fan sure enough it was a SPAL model VA09-AP12/C-54A Spal's part# 30100411 .
Not a aftermarket fan, but the exact same fan as the original . Talk about a mark up.
#9
It get worst then that Polaris just has a insane mark up even on parts they do not make.
Example : I needed a new fan and my dealer wanted $300 for a new one. The OEM fan is made by SPAL of Italy and mine was the model VA09-AP12/C-54A FAN (11") Polaris Part #2410288 .
I found a new fan on Ebay for $85 shipped , when I received the Fan sure enough it was a SPAL model VA09-AP12/C-54A Spal's part# 30100411 .
Not a aftermarket fan, but the exact same fan as the original . Talk about a mark up.
Example : I needed a new fan and my dealer wanted $300 for a new one. The OEM fan is made by SPAL of Italy and mine was the model VA09-AP12/C-54A FAN (11") Polaris Part #2410288 .
I found a new fan on Ebay for $85 shipped , when I received the Fan sure enough it was a SPAL model VA09-AP12/C-54A Spal's part# 30100411 .
Not a aftermarket fan, but the exact same fan as the original . Talk about a mark up.
#10
Ok had starter rebuilt, now that it cranks it pops back thru the carb. Tells me timing it off, but don't know where.
Reset cam timing the other day( prev owner had it a bit off) rest valves to 006. I did notice the flywheel had a bit of play back and forth on the keyway( key isn't broken) but once it's tight play is gone.
Any ideas where to look next?
Reset cam timing the other day( prev owner had it a bit off) rest valves to 006. I did notice the flywheel had a bit of play back and forth on the keyway( key isn't broken) but once it's tight play is gone.
Any ideas where to look next?