1981 Ec340e Supplementary Service Manual

1981 Ec340e Supplementary Service Manual
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• YAMAHA
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SNOWI081LI
MOTONIIGI
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SUPPLEMENTARY
SERVICE MANUAL .
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LlT-12618-00-35.
8L6-28197-10
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1981 EC340E
FOREWORD
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This supplementary service manual for EC340E has been published to
supplement the ET340ED supplementary service manual (8J9 28197 - 10). For complete information on service procedures, it is necessary to use this Supplementary Service Manual together with the following
manuals.
ET340B Service Manual (8J8 -28197 -10)
ET340C Supplementary Service Manual (8J4-28197 -10)
ET340ED Supplementary Service Manual (8J9 -28197 -10)
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NOTE:
The Research and Engineering Departments of Yamaha are continually
striving to further perfect all models. Improvements and modifications are
therefore inevitable.
In light of this fact. all specifications within this manual are subject to
change without notice. Information regarding changes is forwarded to all
Authorized Yamaha Dealers as soon as available.
SERVICE DEPT.
INTERNATIONAL DIVISION
YAMAHA MOTOR CO., LTD.
Particularly important information is distinguished in this manual by the
following notations:
NOTE:
CAUTION:
WARNING:
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A NOTE provides key information · to make procedures
easier or clearer.
A CAUTION indicates special procedures that must be followed to avoid damage to the machine.
A WARNING indicates special procedures that must be followed to avoid injury to a machine operator or person inspecting or repairing the machine.
YAMAHA EC340E
SUPPLEMENTARY SERVICE MANUAL
1 st EDITION, July 1980
ALL RIGHTS RESERVED BY YAMAHA
MOTOR COMPANY, LTD., JAPAN
PRINTED IN JAPAN
1981 EC340E
CONTENTS
1. NEW SERVICE PROCEDURE ... ....... .............. ................... ..... .... .. ...... .... ..... ..1
2. SPECIFICATIONS .......... ..... ....... ...... .... .... ... ....... ...... .. ..... ....... .. .. .. .......... ...... ... 2
3 . WIRE AND PIP E ROUTING DIAGRAM
1. NEW SERVICE PROCEDURE
In servicing the EC340E. there is no particular service procedure to be
added to that for the ET340 ED.
- 1-
1981 EC340E
3. SPECIFICATIONS
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NOTE :
(Compared with 1980 ET340ED)
General
Model
EC340 E:
Model:
Model (1.8.M. No.)
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EC340E (8l6)
8l6-06701
E3 88-06701
2.555 mm (100.6 in)
97 0 mm (38.2 in)
1.040 mm (40.9 in)
Engine
Description :
Engine type
Engine model
Displacement
Bore X Stroke
Effective compression ratio
Starting system
Ignition system
lubrication system
E338
338 cc (20.6 cu.in)
60 X 59 .6 mm (236 X 2.35 in)
6.5: 1
Recoil hand starter and electric starter
C.D.1.
"Autolube" oil inspection
Cylinder head:
Combustion chamber volume (with spark plug)
21.3 cc (1.30 cu.in)
Fan cooled two-stroke 5-port. twin cylinders
Dome + Squish
0.5 mm (0.02 in)
Compression chamber type
Head gasket thickne ss
Piston:
Piston skirt clearance (Measuring point)
Piston pin outside diameter X length
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Dimension:
Overall length
Overall width (std)
Overall height (w/windshield)
Pi ston oversize
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Frame I.D. & starting number
Engine I.D. & starting number
Cylinder:
Material
Bore size
Taper limit
Out of round limit
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* ..... New specification
.
Cast iron sleeves aluminum
60 mm (2.362 in)
0.05 mm (0.0020 in)
0.01 mm (0.0004 in)
0.040 ~ 0 .045 mm (0.0016 ~ 0 .0018 in)
(10 mm from piston skirt end)
1st 60.25 mm (2 .3 72 in)
2nd 60.50 mm (2.382 in)
3rd 60.75 mm (2.392 in)
4th 61.00 mm (2.402 in)
cP16 X 47 mm (cPO.630 X 1.85 in)
Piston ring:
Piston ring design (Top)
Piston ring design (2nd)
'Ring end gap (installed) (Top)
. Ring end gap (installed) (2nd)
Keystone
Keystone
0.35 ~ 0 .55 mm (0.014
0 .35 ~ 0.55 mm (0.014
Small end bearing:
Type
Needle bearing
Big end bearing :
Type
Needle bearing
Crankshaft:
Crankshaft assembly width (A)
160
-2-
~
~
0.022 in)
0 .022 in)
± 0 .1 mm (6.30 ± 0.004 in)
1981 EC340E
Crankshaft assembly width (F)
52 ~ g05 mm (2047 ~g 002 in )
Crankshaft 'deflection (D)
0:03 mm (D-1) 0.04 mm (D -2)
Connecting rod large end side clearance (C)
Connecting rod small end defl ection (P)
0.04 mm (D -3) 0.03 mm (D -4)
0 . 25~0.75 mm (001O~0.014 in)
2.0 mm (0079 in)
---P
Q
D-1
D-4
I J
K~A~~J
Crank
Crank
Crank
Crank
Crank
Crank
Crank
Crank
pin outside diameter X length
pin type
bea ring type (Left) X q'ty
bea ring type (Center) X q'ty
bearing type (Right) X q'ty
oil seal type (Left) X q'ty
oil seal type (Center) X q'ty
oil seal type (Right) X q'ty
cjJ22 X 51 mm (cjJ0866 X 2.008 in)
Solid shaft assembly type, with serration
#6306 special 1 pc.
#6206 special X 2 pcs .
#6305 special X 1 pc.
FPJ-30 72 8 2TS X 1 pc.
Labyrinth seal X 1 pc.
FPJ-2548 8TS X 1 pc .
Carburetor :
Type & manufacturer/ quantity
I.D, Mark
Main jet (MJ)
Pilot jet (PJ)
Pilot screw (PS.)
Throttle valve (ThV)
Valve seat (V.S.)
Float height
Id!ing engine speed
838-34 MIKUNI X 1 pc.
8J600
#240
#75
1.0 turns out
#190
cjJ 1.5 mm (0.059 in)
25 ± 1 mm (0.98
1700 r/ m in
± 0.04 in)
,
Main jet setting chart.
~
- 30 ° C
(- 22 ° F)
I
Altitude
- 20 ° C
( - 4 ° F)
I
! - - #2 50
- 600m 12000 h)
1200m (4000 ftl
-
ls00m (600G h)
O° C
(32 ° F)
I
I
10° C
(50 ° F)
I
I
#220
#2 40
(Std)
.
20 C
(6S 0F)
#220
#2 40
(Std )
Sea level
-
- 10 °C
(14° F)
#220
#210
~ ~~!~
#210
_
#220
#200 _
#200
- 2400m (SOOO ft)
#210
-#190
- 3000m (10000ft)
#190
or more
#200
• Newly changed specification .
- 3-
1981 EC340E
Lubrication:
Autolube
Autolube
Autolube
Autolube
Autolube
Autolube
pump
pump
pump
pump
pump
pump
-
Color code
Minimum stroke
Maximum stroke
Reduction ratio
Output Min./200 strokes
Output Max./200 strokes
Autolube pump wire free play
Oil tank capac ity
Oil grade
White
0 .20 ~ 0.25 mm (0.0079 ~ 0.0098 in)
165 ~ 1.87 mm (00657 ~ 0 .0736 in)
1/ 32
0.50 ~ 0.63 cc (00169 ~ 0 .0213 oz)
4.15 ~ 4 .70 cc (0.1403 ~ 0.1589 oz)
25 ± 1 mm (0.98 ± 0.04 in) at idle
2 .4 Liter (2 .5 US.qt)
YAMALUBE 2-cycle
Orive and track suspension
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Transmission:
Type
Drive ratio
Engagement rpm
Primary spring:
Part No.
Color code
Secondary spring:
Part No.
Color code
Secondary spring pre-load (twist)
Sheave distance
Sheave off-set
V-belt width and outer line length
V-belt wear limit
Track suspension:
Type
Damper type
Spring color code (Front) ·
Spring color code (Rear)
Slide runner wear limit
Track width
Trade deflection
Length on ground
Wheel sprocket material and number of teeth
Stopper band length (Front)
Secondary drive:
Type
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V-belt automatic centrifugal engagement
3.5 : 1 ~ 1 : 1
3000 r/ min
90501 - 50500
Red
90508 -40080
No painted
160 0
266 ± 2 mm (1047 ± 0.08 in)
11 ± 1 mm (043 ± 0.04 in)
31.6 X 1.099 mm (1.24 X 43.3 in)
26 mm (1.02 in)
Slide rail suspension
Oil and gas damper
Red
No painted
10 mm (0.394 in)
380 mm (15 in)
25 ~ 30 mm/l 0 kg (0.98 ~ 1.18 in/22 Ib)
760 mm (29.9 in)
Polyethylene 11 T
186.5 mm (7.34 in) (1 st hole from the bottom)
Chain (#40K-2)
Reduction ratio
Chain pitch X Number of links
22/ 13 (1.692)
12.7 mm (0.5 in) X 60L
Free play
10 - 2 mm (0.4 - 0 .08 In)
Chain hou sing oil quantity
Chain housing oil grade
400 cc (13.5 oz)
Gear oil API ·'GL3" (SAE #75 or 85)
Brake:
Type
Brake pad thickness
Brake pad wear limit
Gap between pad and disc
+5
+ 02
Disc brake
7.3 mm (0.287 in)
1.0 mm (0.04 in)
0 .2 ~ 1.0 mm (0.008
-4-
.
~
0.039 in)
1981 EC340E
Chassis
Frame:
Material
Steering system:
Caster (ski column)
Camber
Ski length X width X thickness
Ski stance
Ski toe -ou t
Steering linkage type
Lock to lock angle (Ski)
Lock to lock angle (Steering co lumn)
Aluminum
+ Stee l
25 °
0°
980 x 120 x 1.6 mm (3 8 .6 x 4.7 x 0.06 in)
850 mm (33.5 in)
~ 6 mm (0 ~ 0 .2 3 mm)
Tie-rod
L: 27.6 °
Right ski.
R: 24.8 °
Left ski.
L: 24.8 ° R: 2 7. 6 °
Righ t : 54.3 °
Left: 56.3 °
o
Front suspension:
Type
Damper type
Leaf spring
Oil damper
Fue l tank:
Capacity
Fuel grade
Regu lar gasoline
22.7 liter (6 US. gal)
Electrical
Ignition system:
Type- flywheel magneto (C.D.I. Type)
Model/manufacturer
Voltage
Pu lser coil resistance
Charging coil resistance
Charging coil resistance
Ignition tim ing :
B.T.D.C.
Ignition coil:
M odel/M a nufacturer
Spark gap
Prima ry winding resistance
Secondary winding resistance
Diode (Yes or No)
Spa rk plug:
Type & quantity
Spark plug gap
Spark plug cap:
Type
Noise suppressor re sistance
F3 T352/MIT SU8IS HI
12V
90fl at 20 ° C (68 ° F) (White/ Red - 8Iack)
350fl at 20 ° C (68 ° F) (Brown-Black)
150fl at 20 ° C (68 ° F) (Blue-Black)
1.6 ± 0 1 mm (006 ± 0.004 in)
CM62 -20/HI TAC HI
9 mm (OA in)/300 r/min
11 mm (06 in)/3.000 r/min
0. 15fl at 20 ° C (68° F)
3.6kfl at 20 ° C (68°F)
No
'" YW51/TOYO DENSO
<<-
0 .1 2 fl at 20°C (68 ° F)
4 .0kfl at 20 ° C (68 ° F)
<-
NGK BR -9ES x 2 pcs.
mm (0 .028~0.03 1 in)
0 . 7~0.8
Rubber type with noise suppressor
5.5kfl at 20 ° C (68°F)
C.D. I. unit:
M odel/M a nufactu rer
Starter motor type:
Armature coi l resistance
Field coi l resistance
Brush length: standa rd
minimum
Brush spring pressure
Armature mica undercu t
8H4-20/MITSU BISHI
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NI PPON DENSO 028000- 7180
0.014flat20 ° C(68 ° F)
-
12 mm (OA7 in)
8.5 mm (0.33 in)
800 g (282 oz)
'" 0.6 mm (0.023 in)
-5-
1981 EC340E
Battery type:
Charg ing rate
Spec ific gravity
YUASA YB - 14L-2A
1.4 Amps for 10 Hours
1.28/ 20 ° C (68° F)
Charging system
Type
Charg ing coil resistance
Flywheel magneto
O.22fl at 20 ° C (68°F) (White-Black)
Starter relay switch:
Cut- in voltage
Winding resistance
Hitachi A 104-61
6.5V
3.0fl at 20 ° C (68 ° F)
Rectifier:
Type
Model/manufacturer
Capacity
With stand voltage
1-element type (Half wave)
DE5404/ STANLEY
6A
400V
Ligh ti ng system:
Lighting output
Lighting coil resistance
Head light type
Bulb wattage/q 'ty
Tail/brake light wattage
12V- 110W
0.19fl at 20 ° C (68 ° F) (YellowSem i sh ield
12V-60/ 60W X 1 pc.
12V-8W/23W
A .C. voltage regulator:
Model/Manufactu rer
Voltage
TRIZ-24B/ HITACHI or S85 16B/TOSHIBA
13.8 ± 0 .5V
- 6-
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