Yamaha F90D User Manual

BRKT
Bracket unit
7-33
6D81G11
Disassembling the gear pump
1. Remove the manual valve, then the gear
pump and filters.
2. Remove the relief valve seat caps, then
the up-relief valve seat
1
and down-
relief valve seat
2
.
3. Remove the lever
3
, then the shuttle
pistons
4
.
4. Remove the gear pump bracket
5
, then
the adapters
6
.
5. Remove the pins
7
, then the drive gear
8
and driven gear
9
.
Checking the gear pump
1. Clean all the pistons and balls, and then
check them for damage or wear. Replace
if necessary.
2. Check the filters for damage or clogs.
Replace if necessary.
3. Check the drive gear and driven gear for
damage or wear. Replace the gear pump
assembly if necessary.
Assembling the gear pump
1. Install the drive gear
1
and driven gear
2
into the gear pump housing.
2. Install the balls
3
into the gear pump
housing.
3. Install the gear pump cover
4
, then the
pins
5
.
S6D87370
4
3
2
1
4
S6D87560
S6C17600
6
6
5
7
7
8
9
S6C17610
1
2
3
3
1
2
3
3

Yamaha F90D Specifications

General

Fuel Induction System	Electronic Fuel Injection (EFI)
Starting System	Electric
Alternator Output at W.O.T.	35 Amp
Lubrication System	Wet Sump
Full Throttle RPM Range	5000 - 6000 rpm
Steering	Remote
Trim Method	Power Trim and Tilt
Exhaust	Through Propeller
Engine Type	4-Stroke
Displacement	1832 cc
Max Output	90 hp
Recommended Fuel	Regular Unleaded (Minimum Pump Octane 87)
Recommended Engine Oil	Yamalube 4M
Ignition System	TCI
Cooling System	Water Cooled
Shaft Length	L (20"), X (25")