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2002 yamaha Grizzly 660 ( Lafayette / West Lafayette)
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By 97kingquad
I have been rebuilding some ATVs in my spare time and teaching myself along with the help from the internet how an engine works and getting bikes running again is quite enjoyable. I even built an arctic cat 300 4x4 from two parts bikes the had seized motors and missing parts. It was pretty enjoyable.
So I am now working on a sazuki quadrunner 300 1992 which had a whole list of issues when I got it. I have fixed almost everything I need to in order to get this bike running. But something is going on inside the head or crankcase.
I had to replace the timing chain because it was very stretched due to the previous owner.
What the issue was, the timing chain was off the sprocket inside the engine due to it being stretched it slipped off. So the previous owner rebuilt the top end thinking it would fix it which it may have temporarily, but when doing so they welded an extra inch onto the tensioner to hold the chain tight. Which as you can imagine caused a dozen other issues.
So that stretched the chain to the point where I could remove the cam with the tensioner in.
It beat the sliders all to hell. Destroyed the cylinder housing and obviously ruined the tensioner.
I didn't realise all of this until after I rebuilt the engine. I noticed wear where the timing chain runs through the cylinder. I found the cam had no retaining chair, or clip whatever you want to call it so the cam was beat to sh** also. It had almost an inch of play side to side.
So I pulled the head off of my parts bike and fixed all of it. Then put it together and went to pull it over and found it was not on the sprocket (this is when I realised that all that damage and the welded tensioner was because the timing chain had been off the sprocket)
So I pulled the stator cover off and pulled the flywheel (which I should add to get at the stator cover I have to remove the rear tire and a arm as well as remove the bolt through the front of the engine. And the exhaust system has to be removed to pull the cylinder as the exhaust guard is bolted to the side of the timing chain tensioner. Stupid setup. Glad the king quad doesn't have that.
So I got everything apart and the flywheel off. New timing chain (nice and tight now) put the head back together and flywheel but it is quite hard to turn the engine over. I can but with difficulty. When the valve cover was off it seemed to spin much more freely. Before I tear everything back apart and start again any ideas on what it is?
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By 97kingquad
Ok so I'm back lol
I got two arctic cat 300s that I am either trying to make one of the two or if possible I'll get them both running. I have a good start but I am struggling to find a wiring diagram that actually shows the connections.
Both bikes were tore apart and some wiring was spliced and all screwed up so I have been tracing wires and redoing the connections.
On one bike I have a neutral light and it will let the use e start to turn starter motor, thing is on that bike the motor is stuck engaged so when I pull the pull cord it's turning the starter motor as well.
On the other bike it is free and works as it should but I can't get the neutral indicator light to come on. Or any for that matter. I have been going through the fuses which all have power as well as the e start switch.
I'm wondering if anyone has come across some similar issues, I am checking the neutral switch tonight, I have been checking the wiring and comparing it to the bike that is working (in that sense) but both bikes are missing some things
I'm wondering if it is a better option to pull the good motor out and rebuild it then put it into the bike with the indicator lights working. But on that bike all the bushings and linkages are toast so there's a lot of work to either bike. I'd like to at least get the engine to fire up before I invest too much energy into swapping motors.
So if anyone has some info or can send me in the direction of a good wiring diagram it would be much appreciated. Thanks
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By Gwbarm
My Yamaha Big Bear shifts through all the gears good, goes into reverse smoothly, but when i go to get out of reverse it takes a lot of effort to get it back to first gear, and even then it does not go very smoothly, have to pull up on the pedal really hard, anyone else ever had this problem. Any ideas would be greatly appreciated.
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By DarkRider
Hey everybody,
Just curious on some opinions on my recent buy. I'm a big fan of the drivetrain and transmission in the Suzuki King Quad 300 and QuadRunner 250 4wd models. I've been wanting one of either model for quite some time, and recently picked up a really nice shape one for 1500. I just wanted to get some opinions on whether you'd be more hesitant to get something this old, if there are newer options that are comparable.
Also just keep in mind this is coming from someone not super mechanical.
Key factors:
Engine doesn't appear to have any leaks Had to replace the battery for $100, no biggie Front left CV boot is torn (not yet sure if the axle has damage) Starts right up with the tap of the button every time (so far) Idle was a bit low and was shutting off when warm. Adjusted the idle. Now it will only shut off occasionally on a hill if I'm not rolling or giving it gas. Has a Harbor Freight Badland winch with a wireless remote (brand new, tested and working) Has brand new shocks and brakes Shifting gears and changing between 2wd/4wd/diff lock/high/low/super low all seem fine. Rides pretty good, tight steering, takes the bumps pretty good as I have pretty rough trails. Brand new tires Over 2000 miles, that's quite a bit, but it seems well cared for. Plastics are almost all there. It's really only missing a small bit of the black mud flap in the rear. Has minimal stitching in the front, and it's got the usual scuffs. All of the lights work just fine (Neutral, Reverse, high and low beams) Tested the charging system and that works
And I think that's just about all I can think of at the moment. It mostly seems to be complete and all there. I was a little hesitant about getting something that old, as parts are always a concern. Looks like most parts are available, but axles seem to be hard to get if you want something brand new. I really wanted a 2000's model but I couldn't pass up the price.
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By David Cameron
The small waterline insert for the hose that goes from the water pump cover to the thermostat housing has corroded off. I only need the insert on top and behind the thermostat housing that the hose goes over and can't find just the insert. It looks like it may be pressed in. I've have been told the entire motor housing needs to be replaced. The pic with the red line indicates where the hose and insert would be and the insert looks like the pic of the water pump Any ideas would be really appreciated.
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