Maintenance
• 60/68 PT PTO Shear bolt -- 8 x50 mm 8.8
• 78/87/97 PTO Shear bolt – 10x55 mm 8.8
•
60/68 PT Auger Shear bolt -- 1/4”x 11/4” Gr #2
•
78/87/97 Auger Shear bolt – 5/16” x 11/4” Gr #2
•
Auger Drive Chain Tightener – tighten chain allowing ¼” sag in the bottom span of chain (be
-
tween drive and driven sprocket).
Lubrication
•
Gearbox- check oil level every 50 hours. Fill to oil level plug (middle of gearbox) with SAE 90
gear oil. SAE 80W 90 gear oil may also be used.
• Auger and Shear Sprocket Bearing – grease sparingly every 50 hours. (By using too much
grease you will push the seals off the bearing).
• PTO Shaft – grease every 10 hours. Pull apart and apply grease to the sliding members.
Grease the yoke bearings at this time as well.
• Discharge chute mount – occasionally squirt oil on the plastic ring (this will extend the life of
the plastic ring and will operate smoother).
• Auger Chain – apply oil on a regular basis especially after using the snowblower.
Storing the Snowblower in the off season
At the end of the season lubricate the Bearings, PTO shaft, Discharge chute mount and Auger
chain before storing it.
Notes
All fasteners are
Grade #5
unless otherwise specified.
Bush Hog Pull Type Snowblower Maintenance
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