1994 Polaris 300 2 stroke chain issues

[Ghost420guy]

My friend recently rebuilt this 300 2 stroke, .06 over bore, full aftermarket exaust, clutch kit and jetting. He's snappin chains ike its goin outta style, several of us have checked chain tension but they keep snapping. First ever i seen in 2 pieces lol Does anyone have an idea on why this keep happening? Just about every other ride it snaps, and he runs 520 o-ring chain

[marioweldinginc]

-What chain is he using (brand)

-check the alignment of the sprockets

-are the chains being broken in?? balls to the wall on a brand new chain isnt good. it needs to stretch a little first and then readjusted.

[Ghost420guy]

R.K something, the sprockets are new and no he haven't checked alignment yet. I'll look up how, as far as breaking them in, no. He throws it on n balls out throught the mud, so it sounds like he needs to break em in huh.... lol i never did on my old machine either but nothin ever broke

[marioweldinginc]

Check the alignment of the sprockets. Dont eyeball them either use a laser. If they are aligned then adjust to proper slack. Drive easy then get on it a little. Ride this way for 20-30. Check chain slack and adjust. Then eyeball the slack every time you ride til it stops stretching then maybe every 20 hours check it. Or weekly whatever.

Tell your buddy to stop being a primadonna and take care of his machine properly

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[cheriah]

Does his model have a non-concentric swingarm? If he has this, the tension constantly changes as the swingarm moves up and down, thus overtightening during riding. It's either too tight, or as Mario said, the sprockets are misaligned. The next chain he snaps may end up in the back of his head or through the engine block, not to mention damaging the tranny. he needs to "cool it" during the break in period too or his new sprockets will be toast in no time. You did'nt specify which model he has, only the year and cc's. Hope this helps!

[GEARHEAD01]

if my memory serves me correctly then yes that p0laris 300 should be a swing arm set up. i agree with cheriah back off the throttle and check for proper alignment. also. you should have approx 1/2 to 3/4 of an inch chain slack with a swing arm to allow for the travel.

[marioweldinginc]

if my memory serves me correctly then yes that p0laris 300 should be a swing arm set up. i agree with cheriah back off the throttle and check for proper alignment. also. you should have approx 1/2 to 3/4 of an inch chain slack with a swing arm to allow for the travel.

What am I chop liver?? J/K

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[GEARHEAD01]

nope my computer automatically puts me to the last post. i appologize .

[marioweldinginc]

nope my computer automatically puts me to the last post. i appologize .

Im kidding sweety. ask Oxidized Black as he loves my humor

[cheriah]

Mario, stop whining, I gave you credit in my post....

[marioweldinginc]

waaaaaaaaaaaaaaaaaaaaaaa

[cheriah]

I love it when real men cry.......

[marioweldinginc]

whips make me cry

[cheriah]

sticks and stones can break my bones, but whips and chains excite me...handcuffs too...LOL

[cheriah]

[marioweldinginc]

sticks and stones can break my bones, but whips and chains excite me...handcuffs too...LOL

Latex, thigh high boots, riding crop,..... The list is toooo long

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[cheriah]

Latex, thigh high boots, riding crop,..... The list is toooo long

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maybe you should have considered buying them for your wife for Christmas....LOL:biggrin:

[marioweldinginc]

She has them... Plus other things wwoooooo

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[cheriah]

[wylde1]

this guy sounds lucky to me. I had two chains snap on my quad, I clobbered a rock with it and broke it once and the second time I bent the sprocket, but both times the broken chain took out my gearcase.

[oxidized_black]

Im kidding sweety. ask Oxidized Black as he loves my humor

That's a big 10-4 good buddy! :moon:

LOL

[marioweldinginc]

Look Wylde1 weve seen your videos. Lucky anything survives

[wylde1]

Look Wylde1 weve seen your videos. Lucky anything survives

:bow:

[marioweldinginc]

That's a big 10-4 good buddy! :moon:

LOL

See he even lets me kiss his cheek

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[Ghost420guy]

Lmfao! I love where this thread went lol I'm goin out to his place this weekend and I'll check the alignment of the sprockets, it is a swing arm set up and hes put alot of money into this machine. Just about everything on it is new, we jus ride really hard. I'll pass the info on about breakin in the chain n if he doesn't listen well pi@s on him, I tried to help lol He's upgrading in a year anyways, tired of bein the slowest n weakest machine hehe U guys crack me up lol

[CK1999_400ex]

O wow ...lol... kissing cheeks ...lol... thats just 2 much ...lol

[oxidized_black]

O wow ...lol... kissing cheeks ...lol... thats just 2 much ...lol

i was just mooning....

this is an a$$ kiss LOL :kissbutt:

[marioweldinginc]

Lmfao! I love where this thread went lol I'm goin out to his place this weekend and I'll check the alignment of the sprockets, it is a swing arm set up and hes put alot of money into this machine. Just about everything on it is new, we jus ride really hard. I'll pass the info on about breakin in the chain n if he doesn't listen well pi@s on him, I tried to help lol He's upgrading in a year anyways, tired of bein the slowest n weakest machine hehe U guys crack me up lol

Sorry i cant find the hijack smiley on my phone.. Its there somewhere o_O

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