Yamaha RD125C Servicehandbuch Seite 216

4. Dynamo adjustment Standards
Part Item
Maintenance
Inspection
Field coil Resistance
Shunt
Series
4 . 6 « ± 10% (68°F or 20°C)
0.0135« ± 10% (68°F or 20°C)
When voltage is irregulär
Brushes
Material
Number
Width x thickness x length
M i n i m u m length
Spring pressure
M H 2 3
4
0.31 x 0.18 x 0.83 in. (8 x 4.5 x 21 mm.)
9 m m .
600 g. ± 15%
First 4,000 mi. (600 kms.)
Every 2,500 mi. (4,000 kms.)
thereafter
Commutator Diameter
M i n i m u m diameter
Mica undercut
M i n i m u m mica undercut
Difference between max.
and min. diameter
1.51 in. (38.5 mm.)
1.43 in. (36.5 mm.)
0.019 ~ 0.032 in. (0.5 - 0.8 mm.)
0.008 in. (0.2 mm.)
0.0012 in. (0.03 mm.)
Breaker Point gap
Point pressure
Ignition timing
Automatic spark advance
0.012 ~ 0.016 in. (0.3 ~ 0.4 mm.)
700 ± 50 g.
B.T.D.C. 1.8 ± 0.15 mm.
Starting 1,700 ± 150 r.p.m.
Final 2,000 ± 100 r.p.m.
Advance 12° ±2°
Every 2,000 mi. (3,000 kms.)
(High r.p.m. irregulär)
(Ignition irregulär)
Others I i \ i too rvts\ si to 1 s\ i i t a r 1
u y n a m o a i d . (outer/
Dynamo dia. (inner)
Armature taper
Cut-in r.p.m.
R
9
in
( 1 m m
\
III. \ 1 O H l l l l l l . l
5.1 in. (130 mm.)
28 m m . x 1/5
1,700 r.p.m.
Capacity Rated Output r.p.m.
14 V . , 7 A . /1.900 r.p.m.