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Oil leaking from rocker assembly

2711 Views 2 Replies 3 Participants Last post by  retro

(My ATV is a 1986 Honda TRX 350)

There had been some oil on the cylinder head fins which I thought was coming from the valve cover seal which I replaced a while ago but never cleaned up the oil. Today I took some brake clean and compressed air to clean it up which worked really well but when I drove it home I noted that some oil was leaking out around bolts going into the rocker assembly. I think it may be the O-rings but not sure. If it is the O-ring what would be the easiest way to fix it without pulling the motor or is it even possible? And would it cause any damage if I leave the slow leak alone and top up the oil ever once and a while?

I think the O-Ring (18) that fits around the rocker arm (7 & 6) isn’t sealing causing the oil to leak out the side of the rocker arm bolt.

Link to partzilla schematic:

Any ideas would be a help
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Won't cause damage, just annoying. You don't have to pull anything off the motor but the rocker cover. The rocker arms are held in place by dowel pins that can be a huge pain in the rear to remove sometimes. Once they're out the o-rings are easy to replace.
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