Thanks for the reply and info mla2ofus. You know the exact problem of having to take two links out vs one. We plan to look at elongating the adjustment slot. Plus, look into using a master-link with spacers (as a half-link) to adjust the chain. Any suggestions on a source of half links, master links and sprockets? This might not be that big of challenge in the Fort Worth, TX area. We have plenty Small and Large Gardening Shops, Northern Tools and Tractor Supply. The age of the tiller will probably send us to some of the oldest shops with surplus equipment (harder to find these days). loger

Your tiller was made in last half of 1975 in that year only HH60 engines were used. Someone add 8 hp engine later in your tiller life. Another give away date of factoring is its 2 speed after beginning in 1977 they began with 4 speeds other 2 speeds was gain by moving single drive belt to other grooves. If you join the group at yahoo groups dot com you read a lot info there its where I looked on file that had serial list for your Horse at that group there dealer phone number Bill Roger 1-800-609-5110 normal week work hours after 9 AM so hit right time zone. That model number you gave is wrong Horse only made into I, II, III, IV models in early production. Bill Give help you need if phone he old dealer and own group at yahoo. HH60 means 6hp HH80 means 8hp this you find on starter cover on Tec.

Stre: As loger has advised roller bearing would be the best form of resolve but a zerk fitting also would provide an easy solution to your lubrication needs should there be sufficient metal for this modification. Other wise periodic greasing with moly grease should be adequate for most babbitt bearing applications . This was the norm until auto oilers (stuffing boxs) became the norm and then needle and roller bearing . Let us know how you make out . Loger has given sound advice .

Try a slightly shorter belt. Don't go too far or the machine will head to the next county when you release the handle.That is a great machine but close to 30 years old, parts are pretty well non existent.