Raymarine M81135 Installation Instructions Manual page 12

• a 13 tooth drive sprocket and 38 tooth steering sprocket if you have a Type 1 rotary
drive
• a 15 tooth drive sprocket and 57 tooth steering sprocket if you have a Type 2 rotary
drive
13 76
15 76
13 57
15 57
17 57
13 38
15 38
17 38
13 25
15 25
17 25
19 25
25 25
Figure 3:
The sprocket sizes in Figure 3 provide good steering performance for most boats. If you think
Note:
your boat may have unusual steering characteristics, contact Raymarine's Technical Services Call Center
or an Authorized Service Representative for advice.
Obtaining the steering sprocket
Obtain the appropriate sized steering sprocket from the steering system manufacturer.
Obtaining the drive sprocket
Your Raymarine dealer can supply the following drive sprockets (suitable for a
chain):
• 13 tooth: part number M81182
• 15 tooth: part number M81183
• 17 tooth: part number M81184
• 19 tooth: part number M81185
• 25 tooth: part number M81186
Rotary drive - sprocket sizes
7
6
5
4
3
2
1
1 2
Number of steering shaft turns (hardover to hardover)
Rotary drive sprocket sizes
Type 2
Type 1
3 4 5 6
13
D5083-1
inch pitch
3
/
8