1850 oliver

[rats]

i have a 1969 1850 oliver gas that runs good but at high rpm it vibrates.in gear or neutral ,clutch in or out.

 

[craftsman]

Be more specific. The sheet metal vibrates,the clutch vibrates,the engine vibrates, what specific part or piece is vibrating----craftsman

 

[pork]

check some easy cheap stuff before goin in to deep. 2 tings that happened to me on different tractors were, front engine mounting bolts had worked loose. the other was a missaligned hydra-power to trans imput gear. the chain still fit, but turning the hieght ajustment bolt under -neath cured the problem.

 

[bradk]

Take off the chain coupler at rear of hydra-power or over/under(depending which you have)and see what it's like.

Start there and let us know.Heck,you might even find that the chain coupler is shot,or the gears are out of align.~brad

 

[rrlund]

Yup,the chain went to crap on my 1550 last summer while I was raking hay. The thing shook so bad,it shook a big leak in the radiator.

 

[rrlund]

Hang on here,you said clutch in or out. Check the harmonic balancer (engine front pulley) The crank is slightly tapered on those,so if that big bolt is loose,she'll wobble like a knob on an outhouse door.

 

[rats]

it vibrates on the floor ,fenders and steering wheel. when rpm is above 1700