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So I bought a 2001 Quad Runner 250 for my son/wife. Sorry I run a Grizzly 660.
I’ve rode it many times with no issue.
My son’s first time out, I could always hear him but feeling he ran it red line in first gear a lot.
So this is what it was doing during/end of the 2-3 hour ride:
- halfway though noticed smoke (oil) coming from front of the motor sort of under exhaust manifold. Once back at the truck, it was really noticeable. Definitely oil burning off. I’m thinking from the top end maybe.
So quick inspection:
- No leaks or seepage of oil that I could see
- I pulled the plug and it’s black but not wet
- No blue/white smoke in exhaust
- seems to still ride fine
- Engine still has plenty of oil
But now that I’m looking at it back at the house - it’s a hard/won’t start when hot. It starts right up cold no problem but once it stalls when hot, have to let it sit for 10-15 before it will start again.
It wasn’t idling before that trip so I jacked up the idle a bit as well but I think that’s a carb clean/adjustment but...
Any input is appreciated.
Thanks for any help.
Sent from my iPhone using Tapatalk
I have a 1998 Big bear 350...the tail pipe/spark arrestor is broke in the exhaust....how can I get it out to replace it? And what's the best way to get the new one in?
got a big bear I'm working on for a guy and it was flooding gas out into the air box, but still running. I pulled the carb and its beat up just like his other bike I worked on for him (the bayou 220). Its a weird carb tho: the throttle comes in at two locations. it has a plunger and a butterfly. Is this necessary and could I just switch to a butterfly carb? The problem with it is it has a broken float fork (the metal piece that holds the float pivot in place. I'm assuming it is causing the flooding. also the rest of the carb is well worn out and most of the screws are stripped telling me that it has been fiddled with too much by someone who didnt know what they were doing. Also, the oil temp light is turns when key is turned and then goes off after a second- dont know if thats supposed to happen or not.
Fixing for a friend. Atv was at a different friends house to be fixed and he rebuilt the carb and had it running nice, then it shut off and no more. He replaced the key and the coil.
So he got busy, so I am helping, I checked the wiring from the stator to the cdi, and from the cdi to the coil. All is good. I checked resistance on the pickup coil, good, and on the source coil, open. I buy a new stator (China) and the 4 prong plug only has 3 wires in it while mine has all 4. I checked resistance in the source coil and it's in the 300's. I pulled one of the old pickup wires out of the old stator and wire it in the new one. Still no spark.
Why do the wires differ, I checked the VIN again and it's "J" for the year and I got a 1988 stator. Please help!
By Ulf Löfstedt
I just bought a Yamaha Big Bear 350 from 1992. The previous owner has run it on regular engine oil and I have problems with the clutch slipping. I think that's the reason.
So what should I do?
- Just change oil and it will be OK?
- Clean engine/clutch + new oil?
- Or do I need a new clutch?
It is guessing the centrifugal clutch that slips. It has two clutches , it also has a "regular" clutch .
Anyone who has any experience of using wrong type of oil?
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