Volvo Penta AQUAMATIC 280 Workshop Manual page 144

Duoprop propellers are available in two versions as
follows:
A-marked propellers shall only be used with diesel
engines.
B-marked propellers shall only be used with petrol/
gasoline engines.
WARNING! A and B propellers must never be
mixed.
Markings:
Earlier propellers are only marked on the side of the
hub with the part No. and size code, from A1 to A10
or from B1 to B8.
On later propellers the part No. and propeller size
marking on the side of the hub is complemented with
the following data stamped on the rear end of the
hub:
1 = Part No.
2 = Propeller size
3 = Date of vulcanizing
4 = Final manufacture date of the propeller
5 = Tool No. used for the vulcanizing
NOTE! that later propellers, both A and B propellers,
are painted black. To identify the two types, the rear
propeller has a sticker on the front end of the hub.
Propellers with a green/yellow sticker (A propellers)
shall only be used with diesel engines.
Propellers with a red/yellow sticker (B propellers)
shall only be used with petrol/gasoline engines.
Duoprop (later model)
Check which speed range the boat in question oper-
ates in, and select the correct propeller. Refer to pro-
peller recommendations.
NOTE! The propellers are supplied in pairs and must
not be mixed. Use special tool 885127. Install the
propellers as follows: grease the propeller shaft and
fit the fishing line protection (1) and the propeller (2).
WARNING! The line cutters (1 and 6) have very
sharp edges. Be careful to avoid cuts. Then fit
the plastic washer (3), the tab washer (4) and
nut (5). Tighten the nut so that the locking
washer's tabs can be bent into the nut's re-
cesses. Thereafter, install the other fishing line
protection (6) and the propeller (7). Place a
plastic washer (8) on the nut (9) or propeller
cone (10) and tighten the propeller with the nut.
When the locking cone (10) is fitted, a spacer
ring (11) shall be fitted for A-propellers. The
spacer ring shall not be used for B-propellers.
Place a washer (12) on bolt (13) and tighten
the propeller shaft centre bolt.
NOTE! The line cutters (1 and 6) are now replaced by
thrust washers. Never mount line cutters together with
thrust washers.
Propeller identification
Repair instructions
141