wsm RC72-27B Workshop Manual page 41

SERVICING
TIGHTENING TORQUES
RCK54-75B' RCK54/60-24B' RCK60/RC72-27B WSM, 17031
Tightening torques of screws, bolts and nuts on the table below are especially specified.
(For general use screws, bolts and nuts: See page G-3.)
Item
N·m
kgf.m ft-Ibs
Gear box bracket mounting screw
RCK54-75B 77.4 to 90.2 7.9 to 9.2 57.1 to 66.5
RCK54-24B, RCK60-24B, RCK60-27B,
78.5 to 88.2 8.0 to 9.0 57.9 to 65.1
RC72-27B
Mower blade screw 98.1 to 117.7
10.0 to 12.0
72.3 to 86.8
Gear box mounting screw
RCK54-75B 77.4 to 90.2 7.9 to 9.2 57.1 to 66.5
RCK54-24B, RCK60-24B, RCK60-27B, 78.5 to 88.2 8.0 to 9.0 57.9 to 65.1
RC72-27B
Outer pulley mounting nut
RCK54-75B 196.1 to 225.6 20.0 to 23.0 144.7 to 166.4
RCK54-24B, RCK60-24B, RCK60-27B, 166.7 to 186.3 17.0 to 19.0 123.0 to 137.4
RC72-27B
Center pulley holder reamer screw and reamer bolt
RCK54-75B
77.4 to 90.2 7.9 to 9.2 57.1 to 66.5
RCK54-24B, RCK60-24B, RCK60-27B, 78.5 to 88.2 8.0 to 9.0 57.9 to 65.1
RC72-27B
PUlley holder mounting screw and nut 77.4 to 90.2 7.9 to 9.2 57.1 to 66.5
17031800030
CHECKING, DISASSEMBLING AND SERVICING
CHECKING AND ADJUSTING
11900F00710
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Checking Mower Blade
1. Check the cutting edge of mower blade.
2. Sharpen the cutting edges, if the mower blades are as shown in
figure <2>.
3. Replace the mower blades, if they are as shown in figure ®.
• IMPORTANT
• Never forget to set the dust cover, two cup washers and the
lock washer (RCK54-75B) or spline boss, when
reassembling the mower blades. (See page 5-6)
• NOTE
• To sharpen the mower blades by yourself, clamp the mower
blade securely in a vise and use a large mill file along the
original bevel.
• To balance the mower blade, place a small rod through the
center hole and check to see if the blade balances evenly.
File heavy side of the blade until it balances out even.
(1) New Blade (3) Cracked Blade
(2) Worn Blade
17031800040
8-2