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john deere 318 help, i think the Onan is done for good?

22823 Views 103 Replies 28 Participants Last post by  alfieepstein
New to this forum, and i must say it looks fantastic! lots of helpful people, and lots of great tractor stuff. I bought my "new" 318 in the fall. My first real garden tractor. I searched for quite some time for a machine that could bag vast amounts of leafs, and clear alot of sloped, fairly steep, slippery driveway, and decided on this 318. came with power blower/catcher for leaves and the auger snowblower. It did a great job with the leaves. I was so excited to plow the driveway on this first winter storm in chicago. Well, i tried plowing without the chains, (1st mistake) and the driveway was too slippery, so i went to go get the chains and while doing that, the engine started sounding different, almost like it was on choke. Well, the engine then quit, and now won't start. The starter seems to want to crank it over, but can't so i get a grinding noise. I fear the worst, a siezed engine. There was oil in it, my only concern is that it was parked on a hill for a while, could the oil have drained back leaving no lubrication? is there an oil pump on these Onan engines? I am fairly mechanical, but haven't dealt with tractors too much. Usually if instructed well i can find the problem. my question now is, where do i start? What can i look for to figure out if this engine is done? I'm assuming that since it started ok that it is nothing electrical, and the snow thrower wasn't on and it was in neutral so i don't think its anything related to those two issues. I'm just praying someone with a good knowledge of these machines has seen this before. I don't really want to have to start the post of "so what's the best repower engine" :banghead3 although i'm pretty sure that that is coming.
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three questions.
is this a REAL onan starter?
the # should be 191-1808-04 or 05
and the tag should say onan and it should have nine teeth.
have you checked the mounting holes in the block,
to make sure they are not, split or damaged in any way?
lastly, was the starter made in xxxxx?
if, so they tend to be JUNK.
shorter, smaller in diameter, and weigh almost two # less.
the last P 220 for 420 J.D. that i rebuilt had a junk one.
it worked fine when the engine was down on compression,
once the engine was rebuilt, it would barely turn it over.
O.K. i,m done venting now.
thank you boomer (the useed onan engine parts guy )
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if the flywheel is bad, about 425.00 ( new prices )
the ring gear about 65.00. (cummins/ onan list )
IF you purchase the SAME parts from J.D. expect to add at least 35/45 %
for the SAME part????
thank you boomer ( the used onan engine parts guy )
knock off, good for 1000 hrs w/maint.???
the REAL honda at least 3000 hrs
ONAN good for 3000 hrs
thank you boomer ( the used onan engine parts guy )
P/S the onan parts shown are the same for ALL onan twins
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