Broken chain on 2750D snowblower

[manawan]

The chain in my reduction box assembly broke blowing snow on my brothers 1500 ft driveway. I was lucky to find the chain in the snow. It appears the set screws on the main sprocket are missing causing the upper sprocket to slide on the driving shaft running to the gearbox and misalign with the lower drive shaft sprocket. The drive line guard prevented the sprocket key and sprocket from falling off the shaft, thank goodness. I had this blower 4 years with no problems previously. I checked with my local auto parts Bumper to Bumper but they said the had a run on #40 connecting links and were out of stock. I picked up more 5/16 set screws to replace the ones lost and will check to see if they will have some links by the weekend. How hard is it to replace a broken link ?

 

[like2wheel]

Links are easy to change, if you don't have the tool to push them out, you can easily grind them flush & drive them out with a punch. You might try a hardware store, they are more likely to have the links in my opinion.

FWIW, I found my set screws completely loose too when I took the cover off just to snoop around, & I seem to remember some other people saying the same thing.

I suggest anyone with this blower to check theirs to prevent this from happening to them.

 

[manawan]

Thanks i'll try that. I checked all my other bolts to see that they have been retorqued properly at the end of last season before I stored it for the summer, but I didn't think of the set screws. my bad. I wiil use some loc-tite to make sure they stay this time.