Progressive 526512C, Operator'S Manual And Parts List

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17
MAINTENANCE SAFETY

Never work on mower without safety locks in place, if decks are in raised
position.

Keep tractor and mower in good operating condition and all safety devices in
place.

Frequently check blade mounting bolts for tightness.

Periodically check to ensure all bolts are tight and that all nuts, screws and
cotter pins are properly installed to ensure that the mower is in a safe
condition.
PROPER TORQUE FOR FASTENERS
The chart lists the correct tightening torque for fasteners on Progressive Turf
Equipment mowers. When bolts are to be tightened or replaced, refer to this
chart to determine the proper torque except when specific torque values are
assigned in the manual. Only SAE grade 5 fasteners are to be used in the
assembly of this machine, or as otherwise specified in this manual.
Bolt Head Markings
SAE Grade 2 SAE Grade 5 SAE Grade 8
(No Dashes) (3 Dashes) (6 Dashes)
Bolt Diameter (in.)
(SAE Grade 5 Bolts)
Recommended Torque in
Foot Pounds (Newton-Meters)
5/16 21 (28)
3/8 38 (52)
7/16 55 (75)
½ 85 (115)
9/16 125 (170)
5/8 175 (240)
¾ 300 (410)
7/8 450 (610)
1 680 (925)
1” LH Spindle Nut
60 (82)