Yamaha F2 5 Service Manual

69M3E11
POWR
1
2
3
4
5
6
7
8
9
Power unit
Special service tools ..................................................................................... 5-1
Power unit ....................................................................................................... 5-3
Checking the compression pressure ......................................................... 5-7
Disassembling the manual starter ............................................................. 5-7
Checking the spiral spring...

POWRPower unit
5-169M3E11
Special service tools5
Compression gauge
90890-03160
Flywheel holder
90890-06522
Flywheel puller
90890-06521
Valve spring compressor
90890-04019
Valve spring compressor attachment
90890-06320Valve guide remover/installer
90890-06801
Valve guide reamer
90890-06804
Valve seat cutter holder
90890-06316
Valve seat cutter
90890-06312, 90890-06315, 90890-06328
Crank stand alignment
90890-03107 

69M3E115-2
1
2
3
4
5
6
7
8
9
Stopper guide plate
90890-06501
Stopper guide stand
90890-06538
Bearing puller
90890-06535
Bearing puller claw 1
90890-06536
Driver rod L3
90890-06652Needle bearing attachment
90890-06613
Driver rod LS
90890-06606
Bearing outer race attachment
90890-06624
Bushing attachment
90890-06649
Piston slider
90890-06843
Special service tools 

POWRPower unit
5-369M3E11
Power unit5
No. Part name Q’ty Remarks
1 Starter case 1
2 Flywheel magnet cover 1
3Spiral spring 1
4 Sheave drum 1
5 Drive pawl 2
6Drive plate 1
7Screw 1
8 Choke knob assembly 1
9 Stopper 1
10 Manual starter handle 1
11 Damper 1
12 Starter rope 1
13 Spring 1
14 Plate 1
15 Bolt 3 M6 
× 60 mm 

69M3E115-4
1
2
3
4
5
6
7
8
9
5
No. Part name Q’ty Remarks
1 TCI unit 1
2 Flywheel magnet 1
3 Starter pulley 1
4 Spark plug 1
5Grommet 1
6 Clamp 1
7Bolt 2 M6 
× 25 mm
8Bolt 1 M6 
× 12 mm
9Nut 1
10 Washer 1
11 Woodruff key 1
12 Spark plug cap 1
Power unit 

POWRPower unit
5-569M3E11
5
No. Part name Q’ty Remarks
1 Power unit 1
2Gasket 1
Not reusable
3 Bottom cowling 1 1
4 Bottom cowling 2 1
5 Carrying handle 1
6Bracket 1
7 Thermostat cover 1
8Gasket 1
Not reusable
9 Thermostat 1
10 Oil filler cap 1
11 O-ring 1
12 Anode 1
13 Screw 1ø5 
× 25 mm
14 Grommet 1
15 Damper 1
16 Dowel 2
17 Fuel cock lever 1 

69M3E115-6
1
2
3
4
5
6
7
8
9
5
No. Part name Q’ty Remarks
18 Screw 1ø5 
× 7 mm
19 Cooling water hose 1
20 Throttle cable 1
21 Bolt 6 M6 
× 36 mm
22 Bolt 4 M6 
× 16 mm
23 Bolt 2 M6 
× 20 mm
24 Bolt 2 M6 
× 20 mm
25 Bolt 3 M6 
× 20 mm
26 Screw 2ø5 
× 13 mm
27 O-ring 1
28 Grommet 4
29 Collar 4
30 Spring nut 2
Power unit 

POWRPower unit
5-769M3E11
Checking the compression pressure
1. Start the engine, warm it up for 5 min-
utes, and then turn it off.
2. Remove the engine shut-off cord from
the engine shut-off switch on the tiller
handle.
3. Remove the grommet and spark plug,
and then install the special service tool to
the spark plug hole.
CAUTION:
Before removing the spark plug, blow
compressed air in the spark plug well to
clear out any dirt or dust that may fall into
the cylinder.
4. Close the fuel cock and air vent...

69M3E115-8
1
2
3
4
5
6
7
8
9
3. Remove the sheave drum 4
.
 WARNING
The spiral spring can pop out. Pull the
starter rope, and then pull out the sheave
drum.
4. Remove the spiral spring 5
 from the
sheave drum.
 WARNING
The spiral spring can pop out. To remove
the spring, cover it with cloths.
5. Remove the starter rope 6
.
Checking the spiral spring
1. Check the spiral spring for cracks, bends,
or damage. Replace if necessary.
Assembling the manual starter
1. Pass the starter rope 1
 through the
starter...

POWRPower unit
5-969M3E11
2. Wind the starter rope 1
 2 times around
the sheave drum 3
 in the direction of the
arrow shown in the illustration.
NOTE:
After winding the starter rope around the
sheave drum, install the starter rope in the
notch b
.
3. Wind the spiral spring 5
.
 WARNING
When winding the spiral spring, cover it
with cloths.
4. Install the spiral spring 5
 into the sheave
drum 3
.
NOTE:
Bend the outer end c
 of the spiral spring
onto the cutout d
 of the sheave drum.
5. Install the sheave...