Robin EX13D Owner's Manual page 7

Metric keyway-type crankshaft
■
Washer; Use the washer (material; SS41P) with the
thickness described below;
EX13/17/21
Washer
Thickness
ROBIN 020-00801-40,
genuine part Washer
Thickness; 4.5 mm
OD;
ID;
Material;
Bolt; Select the proper bolt and tighten it to the specified
tightening torque, as mentioned below;
EX13/17/21
Effective
16 to 22 mm
thread length
Strength
Tightening
Torque
ROBIN 011-00802-50, Flange Bolt
genuine parts (Screw length; 25 mm)
SAE (inch) keyway-type crankshaft
■
Washer; Use the washer (material; SS41P) with the
thickness described below;
EX13/17/21
Washer 0.177 in. (4.5 mm)
Thickness or over
ROBIN 020-00801-40,
genuine part Washer
Thickness; 4.5 mm
OD;
ID;
Material;
Bolt; Select the proper bolt and tighten it to the specified
tightening torque, as mentioned below;
EX13/17/21
Thread 5/16 – 24UNF2B
dimensions
Effective 0.63 to 0.87 in.
thread length (16 to 22 mm)
Strength
Tightening 20 - 22 N•m
Torque
(204 - 224 kgf•cm)
(14.8 - 16.2 ft•lb.)
(No ROBIN genuine part is available.)
EX27
4.5 mm or over
020-00800-20,
Washer
Thickness; 4.5 mm
28 mm OD; 35 mm
8.5 mm ID; 8.5 mm
SS41P Material; SS41P
EX27
18 to 27 mm
"8T" or higher
20 - 22 N•m
(204 - 224 kgf•cm)
EX27
0.248 in. (6.3 mm)
or over
(NA)
28 mm
8.5 mm
SS41P
EX27
7/16 – 20UNF2B
0.71 to 1.06 in.
(18 to 27 mm)
"8T" or higher
50 - 60 N•m
(510 - 612 kgf•cm)
(36.9 - 44.3 ft•lb.)
Key Location
When using the belt pulley with the extended boss on
both side as shown in the illustration, put the spacer so
that the key stays in the keyway portion of the
crankshaft.
Proper
Key should be within this portion.
Key
Spacer
Improper
Key
Belt Pulley Installation
Install the belt pulley in the no over-hang condition as
shown in the illustration.
Correct
Pulley
Crankshaft (PTO)
Incorrect
Pulley
Large over-hang
Crankshaft (PTO)
EN
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