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Similar Forum Topics
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By kevinohio
My cylinder is full of gas.i thought if carb was messed up.gas came out the overflow.had a cheap china made carburator on it.i ordered a factory used one.couldnt find a new one.also the fuel shut off isn't working right.and going to be needing the battery hold down and seat bracket.where can I get a used one?
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By tjakes680
I have a 2004 Kawasaki Lakota 300 and have to replace rear master cylinder and rear caliper. Does a new rear master cylinder need to be bench bled or bled separately or can I just bleed whole system like a regular brake-bleed? If it does need to be done separately or on bench how would I do this Thanks in advance
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By JNM
Hello,
Acquired a used big bear 400 4x4 that would not start and debugged to compression issues. Tore down the head and determined the lower jug and piston were no good. Cleaned everything up well, got a lower new jug, piston, and all o ring / gaskets, and reassembled. Head bolts tightened to 30ft lbs which is slightly beyond spec of 29, but not grossly over.
ATV started right up after fix, but after idling about 5 mins, I noticed a small amount of oil weeping from the front bottom of the jug; you can see occasional oil bubbling out to surface through gasket. Note: I did ensure to include the rubber o ring on the bottom of jug. I also get white smoke, which appears to be coming out the spark plug side of the head gasket. The head gasket was a 3 ply metal gasket.
When I originally tore down the cylinder, there was black residue on all gasket mating surfaces. Should I have used a little gasket sealant on all gaskets? Everything I read seemed to indicate this should not be required. Looking for advice to help prevent these leaks assuming I tear back down and redo a second time. Thanks
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By ugxvibe
So we purchased a 2000 Honda Foreman 400 from a guy over a year ago for farm work. It was running well for awhile and then started billowing blue smoke about a year later (oil burning) when ever it was running, even under acceleration. So I decided to take off the cylinder and sent it to a machine shop. I am an auto mechanic by trade so was pretty easy.. Anyways, They are telling me the bore measures 91.5mm. This was sold to us as a 400. The fenders say Foreman 400.
What could have been done to this? From what I have read a 400 has an 86mm bore, 450 90mm and 500 92mm. Is this correct? And how is this cylinder measuring 91.5mm? They want to bore it to the next size which would be 92mm (91.96 piston). Could a 400 be bored that much? Or was this actually a Foreman 450 engine? I am so confused right now. Maybe an aftermarket jug or engine swap? I have no idea how to tell. This is my first ATV. I never had any idling/performance issues so I assume it's jetted correctly for the 91.5mm bore? How do I check the jet size and what is recommended?
Also, they are telling me the valve seals I ordered for the Foreman 400 are too small for my valves? Are the valve seals for all 3 engine sizes different sizes as well?
Sorry for this long rant but I thought I had it all figured out until they told me the bore size. Any help would be appreciated. Thanks!
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By chimmike
Anyone know where to locate these, or generics? The generics I seem to find have the mount on the wrong side versus the hose outlet. PITA!
Also, is the rear master cylinder rebuild kit any good?
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