ATV Dirt Wrenching. Polaris Magnum 425 Camshaft Replacement Timing engine. Donate Here: www.paypal.com... My eBay Store: www.ebaystores....
Пікірлер: 19
@Maci504 Жыл бұрын
I agree, great video!…
@joanhinojos23073 жыл бұрын
Thank you so much . your video was very helpful to me
@dnprgp0 Жыл бұрын
What brand cam did you buy?
@williamholbrook36392 жыл бұрын
Where are your big clear lines running to from your carb?
@5347BBC2 жыл бұрын
They are just vent lines. They run under the gas tank and hook to nothing
@alfesta73513 жыл бұрын
hi I have a 96 magnum 425 and it backfiring thru the carb. I rebuild the mikuni carb still backfiring, bought a china carb and the same thing is happening. so I pulled the valve cover to check the cam and it looked ok and the valves were all moving up and down about the the same height. Do you still think it could be the cam. Just don't want to keep chasing. It starts and idles good but as soon as I give it gas it bogs down. it looks like it has to much gas spitting out of the carb.
@5347BBC3 жыл бұрын
Unfortunately China carbs never work on the Magnum 425. On the original carb take the 4 phillip screws off the top of the carb and make sure the rubber diaphragm boot is not torn.
@5347BBC3 жыл бұрын
And then while the machine is running make sure when the throttle is pushed look into the inlet of the carb and make sure the slide is rising up. Make sure it is not sticking
@5347BBC3 жыл бұрын
Also are you sure that is a Magnum 425 carb. Even though it is a Mikuni carb the needle is different then other Mikuni Polaris carbs that will bolt right on
@5347BBC3 жыл бұрын
The wrong main jet will cause this issue
@LuisILemus-kh1yo2 жыл бұрын
Low light can't see a damm thing
@Glucoperon3 жыл бұрын
what were the symptoms? engine not revving up correctly?
@5347BBC3 жыл бұрын
It would not rev out completely. That is the same symptoms of a carb issue only though (which was confirmed not the issue before the cam was replaced). Make sure jets are not restricted in carb. Also air screw needs to be turned out 2 1/2 turns on the carb. A "China" carb will not work properly with the Magnum 425. It needs the factory carb for the Magnum 425. Other OEM carb will fit but are not "setup" the same. So, yes not revving out can be the camshaft also. Also when the cam lobes really get worn the machine will be hard starting and "pop" (backfire out the exhaust) when trying to start.
@Glucoperon3 жыл бұрын
Thank you so much for the info!
@5347BBC3 жыл бұрын
Worn belt also will cause not revving out. Check carb and replace belt would do first and can be considered maintenance. The cam can be visible check just by removing valve cover and manual rotating engine
@Glucoperon3 жыл бұрын
You were completely correct, the guy I bought this from put a new china carb on in. I installed the old nasty carb that it had originally and now it works like a charm- revs up no problem. The old carb needed me to place my hand over the intake for it to throttle up- obviously the new chinese carb has major vaccume issues
@Glucoperon3 жыл бұрын
@@5347BBC Thanks! wouldve never thought to throw on the old carb. You saved my butt a chunk of cash