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Hey everyone,been dealing with quads since I was a kid,now I have a son who loves my raptor 700 and had gotten him an electric power wheel quad but it didn’t cut it for him.so for his birthday “xmas eve” I picked up a used 2002 quadmaster 50 for 500 bucks. It started and moved but needed work..
got it home drove it for a few feet and it started bogging down and would shut off.
so I stripped quad down to the frame cleaned it up as best I could without removing motor from frame.
replaced top end new head piston rings etc cheap kit off eBay along with carb that will be here today.the filter that was on carb was degraded and soaked with gas. Also new cylinder doesn’t have vacuum line so how do I block that off without getting new petcock valve?
guy said quad doesn’t take oil as it’s a closed case right then I knew the guy knew nothing about the machine. So I changed oil,was black and thick and just nasty like sludge.
suspension in rear seems good but the fronts are very stiff,any way to adjust these or should I get a new set?
also upon stripping everything down I noticed the exhaust restrictor was gone so without that do I need to update jets in new carb,old carb has original jets??
and also I’m new to cvt tranny so how would I know if it’s bad etc?
sorry for all the questions just want to make this thing safe for my 5 year old knucklehead.
added some photos of my current progress didn’t take any inbetween cleaning everything though
please any info will be appreciated.
i haven’t rebuilt a quad since 1999 when I had my blaster and my buddies had other 2 strokes I was the mechanic with no knowledge but always seemed to get things right!!
also if you notice the old head looked chipped and damaged and I’m wondering if those chips made it into motor how would I go about finding them?i would think by now they would be chewed up? I did not strain oil that I drained but might do that later when the kids are sleeping and I have time to check it without kiddo seeing!
By Brian Haley
I wanted to ask this question before I pull this thing apart and dig into the carb. Very seldom used for a couple years but took it out the other day and it ran like crap. Blows black smoke on throttle (unburnt fuel) and sound like a multi cylinder engine with a misfire. Won't rev very high on full throttle but seems to be smooth at about 1/3 or less throttle. Choke doesn't seem to do anything and thinking perhaps it's stuck closed. If I turn off the fuel and let it run for a minute It will rev like normal under full throttle until it stalls out from no fuel but as soon as I open the fuel line again it goes right back to running rich/flooding.
Any help or ideas would be great. Trying to avoid tearing it apart and rebuilding the carb but the only thing I can think is the choke is stuck cause with the fuel off it will rev just fin seemingly as it's emptying the float bowl.
By Bobby Belmain
I bought a 1995 Polaris scrambler 400l 4x4 out from under a pine tree here in northern Maine the only action it seen was a plow truck hit it twice in 9 years when I got it home I tore it down the starter and rewind was full of rusty mud cleaned the carburetor put a new plug 3.2 ounce bc oil gear case oil mustard bottle shot of gas in the cylinder wrapped a rope around the clutch and pulled wow sled motor right got about 20 hours of pure full throttle fun then I buried it in a little place we call fiddlehead run black mud that I swear locked up the tires on a Kawasaki brute and snapped a shaft I flew across the top anyways long story even longer I killed crank bearings complete engine rebuilt in my or I should say my wife's living room it was hard on her now its fleshly installed I ported and polished it new everything inside I want to out drag raptor 700's I hate guys that can't change a plug I want to keep the 4x4 but alot of weight also sprockets what's the best combination and my main jet should I change it and I want to know if I can add a nitrous kit to it does anyone know if it will take down a raptor 700 if not I'm gonna put an xc700 shortblock sled motor in it
how to Organization as well as evidence is key when wrenching on your machine
If you want to become more successful at rebuilding an engine or fixing a worn-out suspension, you might follow some of these simple rules. View the full article
Does anyone have some experience with this model? Seems motor may not have passed the tests or held up very well for this beast of a machine. Not sure but parts are limited.
One way or another this one will rise again and get a little mud on the tires....Thanks in advance for your knowledge should you care to share!
Finding it difficult to locate some of the parts. Looking for a decent used cylinder OEM# 3085851, then new piston and rings to fit. Anyone have this model ATV that could share the good, bad, or ugly of this model would be greatly appreciated. I picked it up cheap with a blown head gasket so havn't even rode it yet. Thanks in advancer
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