 ENGINE BLOCK
Three cylinders on line transversely laid out
two strokes with admission by the skirt of the pistons. Sweeping
in loop with two tilted transfers of the type " Schnurle
" cooling liquide,cylindres of 8° forwards
compared to the vertical.
Boring (mm) 70.
Race (mm) 64.
Cubic capacity (Cm3) 738.
Compression ratio: 6,7 to 1.
Maximum power (CH.) 67 - 70*.
At (rpm): 6 500.
Stall torque (m.kg): 7,7 - 8,5*.
At (rpm): 5 500.
Administrative power (CV): 7.
Dimensions of the engine: Length X larg. X high. (mm):
607 X 499 X 445.
Weight of the engine: 84 kg.
CYLINDER HEAD
Monobloc out of light alloy, hemispherical combustion chamber
with laterally inclined candle and towards
the back for the external cylinders, towards the back
for the central cylinder.
Cylinder head gasket of 1 mm thickness before crushing
Tightening torque of fixings: 8 mm: 1,8
to 2,2 m.kg 10 mm: 3 to 3,5 m.kg.
CYLINDERS BLOCK
CYLINDERS out of light alloy with shirts dry
out of cast iron. Liquid cooling and ailettage in
the direction of travel. Two simple transfers.
CONNECTING ROD ASSEMBLY
Of the assembled type, assembled on four ball bearings.
Sealing enters the casings pumps by four lip seals.
Fixed crank pins with 120°.
Pinion of primary transmission inserted between
right cylinder and central cylinder.
cast solid forged steel rods gone up on
bearings needle encagées at the two ends.
FUEL
Tank of 17 liters including 3,5 liters of reserve. Tap
with automatic opening by depression with the admission
CARBURATION
Three concentric tank carburettors.
Cylindrical bushels controlled by cables until
the model " K ", controlled by the depression of admission
starting from the model " L ".
These carburettors are fixed on a turntable. Butterfly with
positive order with swing bar.
Enricher for cold departures on each carburettor
Filters with single air with paper element. Out of foam
since models " L "
Mikuni carburettors " GT 750-K " " GT 750
L-M-A-B "
Identification. .................31010 R
..................31110 M
. ................. 31010 L
Type................................VM 32 SC BS 40
passage (mm).....................32 32
Gicleur principal.........102,5 R and L 110 R and L
100 C (1) 107,5 C (2) Jet of ralenti..................30 47,5
Jet of starter..................50 60
Wells of aiguille...............P4 (cyl. ext..) Z-0
P3 (cyl. cent)
(mm)...............................P4 = 2,670 3,15
P3 = 2,665
Needle type.................5 F 16-3 4 DN 18-3
Switches réglage..............3° 3°
Coupe notch bushel 2,55
Vis of loosened richness
of (tour)..........................1 1/2 3,14 to 1 1/4
Height of the floats
(mm) 0............................... to 28 27,6
Mode of idle
(tr/mn)........................1 100 1 100 (82/49).
D = right - G = left - C = Center.
1: 92,5 D and G-90 C since case of the modified filter.
2: For a better output, it proves to be preferable
to mount principal jets of 110 C and 112,5 D and G.
GREASING
type " C.C.I " by piston pump with variable flow
with the throttle control.
Oil tank: 1,8 liter.
Special oil two strokes: Suzuki " C.C.I " Oil or
a mineral oil of viscosity SAE 30 or 20 W/40.
System of recycling of oil " SRIS " stagnating at
the bottom of the casing pumps.
GEARBOX
Type in cascade with five reports/ratios, pinions with right
size, always in catch.
Models: " J-K-L "
Speeds Numbers teeth Rapports Pourcen-
of the pinions with 1 tages
1 37/13 2,846 32,39
2 33/19 1,736 53,24
3 30/22 1,363 69,12
4 27/24 1,125 82,14
5 24/26 0,923 100
Since models: " M " Speeds Numbers teeth Rapports Pourcen-
of the pinions with 1 tages
1 37/13 2,846 33,80
2 32/18 1,778 54,23
3 29/21 1,381 69,56
4 27/24 1,125 85,71
5 25/26 0,961 100
Capacity of the casing: 2,2 liters after draining, 2,5 L
after Multigrade disassembling of engine oil of viscosity
SAE 20 W/50. SAE 10 W/30.
Mechanism of selection by toothed segment and pawls
interior.
The three forks of selection of the pinions bala-
deurs are assembled on two independent axes.
Control speeds by simple selector connects
left side. Roast speeds in accordance with the standard alle-
mande: 1st down, other reports/ratios to the top,
not died between 1st and 2me speeds.
SECONDARY TRANSMISSION
By simple chain with the step of: 15,875 mm, width
between internal plates - 9,70 mm.Diameter of the rollers
10,16 mm.
108 links until the model " L "
106 let us net starting from the model " M ".
104 links since model " A ".
Ratio of reduction gearing: 3,133 (47/15): Models
" J and K ". 2,67 (43/16): model " M ". 2,66 (40/15):
since model " A ".
Reports/ratios with 1 of total reduction:
Models " J and K " " M " " A and B "
1: 14,92. 12,71 12,61
2: 9,09. 7,92 7,86
3: 7,14. 6,17 6,13
4: 5,89. 5,01 4,97
5: 4,48. 4,29 4,26
BEARINGS AND JOINTS
Four bearings ball of crankshaft
- Bearings external and central left:DG 3078 C-9.
- central Bearing right: OF 3078 DN-9.
Ball bearing of the input shaft on the right-hand side: 6305 NZ.
Ball bearing of the input shaft on the left-hand side: 6204 N.
Ball bearing of the secondary tree on the left-hand side: 6305.
Ball bearing of the secondary tree on the right-hand side: 6204 Z.
Ball bearing of the lighter shaft: interior:
16006 Koyo - Outside: 6302 Koyo.
Ball bearings of the hub of nose gear wheel with drum
6202 Z.
Ball bearings of the hub of nose gear wheel with disc
6302 RS.
Bearings ball of the rear hub flask
side of brake: 6204 Z. |
DISTRIBUTION By the skirt of the pistons. Sweeping of the type " Schnurle "
with two transfers.
Diagrams of distribution
- Admission: Opened before P.M.H.: 81° - Closed after
P.M.H.: 81°.
- Transfer: Opened before P.M.B.: 56° - Closed after
P.M.B.: 56°.
- Exhaust: Opened before P.M.B.: 84° - Closed
after P.M.B.: 84°.
PISTONS Out of light alloy with slightly convex cap. Pistons
with repair sizes: + 0,5; 1 mm.
two ergotés segments higher than the axis of piston
of the type " Key Stone ", face higher of each segment
bevelled than 7° and surfaces friction chrome.
Center piston shifted of 0,5 mm towards the admission.
COOLING Liquid of a capacity of 4,5 liters with radiator
in frontal part. Circulation of liquid under
average pressure of 1,9 kg/cm2 with pump.
Thermostat: beginning of opening with 82° C - full
opening with 95° C.
race: 8 mm.
Water pump with 6 wings, flow: 60 liters of water with
6 000 rpm and 20° C.
Electric fan assembled in series until the model
" K ", in option starting from the model " L ", controlled
by thermal switch.
Temperature of interlocking: 1051.
Temperature of release: 1001.
IGNITION AND LIGHTING
Lighting of the battery type wind under 12 V.
Rotor alternator slip ring of the type with claws.
Maximum power: 280 Watts.
Electric starter: power 500 W - Witness 12 V.
Normal time of operation: 30 seconds.
With vacuum In load Couples blocked
Tension (V) 11 8,5 5,5
Intensity (A) < 50 < 150 < 2,80
Torque (m.kg) - > 0,2 > 0,35
Mode (rpm) > 4 500 > 1.800 -
Reduction of the starter: 11,95 to 1.
Weight: 2,4 kg.
Battery: Yuasa, type 12 N 14 Á.
Capacity: 14 Ah under 12 V.
Dimensions of the battery: Length. 132 X larg. 86 X
high. 167 mm.
Electric fan of cooling, power:
27,6 W.
Rectifying cell by silicon diodes.
Voltage regulator to electromagnetic contacts.
Three reels H.T. marks: Nipponese Denso réf. 029700.
Length of spark: 6 mm minimum.
Three condensers, capacity: 0,16 to 0,20 F.
Spacing of the interrupters: 0,30 to 0,40 mm.
Real angle of cam: 180° (on 360°).
Percentage of DWell: 50 % + 2 %
Advance with standard ignition: 24°.
Cylinders right and left: 3,63 mm.
Roll central: 3,42 mm.
Spark long base (19 mm) of diam 14 mm: NGK B 7 - ES.
Since models " L ": NGK B - 8 ES.
Headlight: Cibié iodizes diam 180 mm " J-K " codes European
since models " L "
Bulb codes headlight: 12 V - 55/55 W - 40/50 W.
Bulb of rear light and stop: 12 V - 8/23 W.
Bulb of indicator: 12 V - 23 W X 4.
Lighting meter - rev counter: 12 V - 3 W X 2.
Witnesses of died point, indicator and headlight
12 V - 1,5 W X 3.
Indicator of water temperature: 12 V - 2 W.
Fuse of protection: 20 A.
PRIMARY TRANSMISSION
TRANSMISSION
Pinions with size obliques of a ratio from 1,673 to 1
Pinion of the crankshaft located between the right cylinder
and rolls central.
Shock absorber of couple carried out by six helical springs
inserted between the pinion and the clutch housing
Fixing of the pinion on the clutch housing by
three rivets.
CLUTCH
Type multi disc to oil bath.
8 furnished discs interdependent of the clutch housing
and 7 smooth discs interdependent of nut of clutch.
Disengaging gear to external order.
Bearings ball of the rear hub central
6304 Z.
Bearing of the back hub of crown: 6305.
Bearing of the plate of pressure of clutch: 6003.
Central joints of the crankshaft: DCY 38 X 78 X 8 X 9,5 mm.
Joint on the left-hand side: TC 5 Y 30 X 78 X 8 X 11,5 mm.
Joint on the right-hand side: TC 5 Y 25 X 78 X 8 mm.
Joint of the lighter shaft - TC 20 X 35 X 7 X 9 mm.
Joint of the axis of kick starter: SD 20 X 37 X 7 mm.
Joint of the axis of selection: 12 X 22 X 9 mm.
Joint of exit of gear box: SD 32 X 42 X 5 mm.
PART CYCLES FRAMEWORK
Doubles cradle out of welded steel tubes.
Steering column assembled on ball basins.
Castor angle: 63°.
Drive out: 95 mm.
FRONT SUSPENSION
Telescopic with hydraulic dampers for double purpose.
Capacity of each tube of fork: 240 Cm3 of oil
Model " J and K ". 160 Cm3 since model " L ".
REAR SUSPENSION winging arm and hydraulic dampers.
Adjustment of the setting of the springs in five positions.
Center oscillating arm assembled on rings. Greasing device
on oscillating arm.
BRAKES
Model " J "
Brake front with drum doubles brake, double cam
diameter 200 mm.
Dimensions of the trimmings: length. 175 X larg. 28 X
thick 4 mm.
Since the model " K "
Doubles disc brake. Clamp floating with simple piston.
Diameter of the discs: 296 mm, stainless steel disc.
Diameter of the plates - 50 mm. thickness usable
4 mm. Go up possible in replacement: Mintex ref.. 111319.
Brake postpones with drum simple cam of diameter: 180 mm.
Dimensions of the trimmings: Length. 171 X larg. 40 X
thick 4 mm.
WHEELS
Rims out of steel:
- front 1,85 X 19.
- back 2,15 B X 18.
Dimensions of the tires
- front 3,25 X 19.
- back 4,00 X 18.
Pressure
(in bars) Front Back
Use: solo... 1,8 2,0
Use: duet or sportsman... 2,0 2,3
DIMENSIONS AND WEIGHT
" J " Since " K "
Overall length (mm).... 2 215 2 205
Overall width (mm)....... 865 880
Overall height (mm)..... 1125 1125
Height with the saddle (mm)...810 810
Footing (mm)............ 1470 1 460
Ground clearance (mm)............ 140 140
Weights full carried out
(the kg)......................... 240 240 |
