murray snow blower locked up

[plotthound]

ive got a murray snow blower model # 627808x84 here that locked up on me.did an oil change,carb clean,new plug and a new starter,machine started and ran fine.went to start it today and the pull cord would not turn the engine over nor would the electric starter.checked to make sure it was not hydro locked and it was not.removed the belt cover and got a wrench on the engine pully shaft and it was tight.worked it back and forth and it began to move.removed the auger belt and it was still a little tight so I removed the drive belt and the engine turned over freely.removed the bottom plate from the blower and everything looks intact and all the bearings seem good.cant see anything that would make the engine bind up.what the heck would cause this malfunction? I'm going to go ahead and split the machine and see if theres any problems I can visually see.

thanks

[KE4AVB]

Haven't work on SBs here due being in the South but sounds like a bearing seizing from rust. If you can let it sit a couple days with the belts off to help pinpoint which section is binding.

[Luffydog]

maybe carb let gas thur to the crankcase check oil for gas

[38racing]

possibly the rubber driven wheel is not disengaging from the drive disc? can you move blower easily with engine off? should be able to check wheel by just removing bottom cover

[38racing]

this ipl should show drive bearings as well
http://www.partsandservice.com/html/Mur ... 8x61a.html

[plotthound]

man o man I just don't see anything wrong in ther.im kinda thinking that the belt de-railed and bound everything up.i jus put 2 new belts on it and everything seems fine.famous last words.lol

[Skywatcher]

Hi Plott

When you're installing the auger drive belt on these units, you must hold the idler pulley in the engaged position, or you can't get the belt under the pulley brake. If the belt rides over the brake, it's almost impossible to turn the engine over as the mechanism is fighting itself and can't release the belt tension. Look at key # 103 in IPL 02 (Frame), the idler pulley is bolted onto the top part of a C-shaped bracket. On the bottom of this bracket, there is a tab that presses on the outside of the auger drive belt when the auger is disengaged and prevents the auger from running on once disengaged. Hope this helps and all the best,

Sky

[plotthound]

thanks skywatcher,i put 2 new belts on this turkey then blew snow for an hour with no issues.must have been an auger belt de-railment that caused the lock-up.i cant make it do it again.