Suzuki RM-Z250 Owner's Service Manual page 310

TRANSMISSION + DRIVE CHAIN
ITEM
Primary reduction ratio
Final reduction ratio
Gear ratios
Shift fork to groove clearance
Shift fork groove width
Shift fork thickness
Drive chain
Drive chain slack
Gearshift lever height
CARBURETOR
ITEM
Carburetor type
Bore size
I.D. No
Idle r/min
Float height
Fuel level
Main jet
Jet needle
Slow jet
Slow air jet
Starter jet
Pilot screw
Leak jet
Throttle stop screw
Throttle cable play
(pulling cable)
Hot starter cable play
Low
2nd
3rd
4th
Top
No.1, 2 & 3
No.1, 2 & 3
No.1, 2 & 3
Type
Links
20-pitch
length
(Above the top face of the foot rest)
E-03, 000
FCR37MX
(1.46 in)
2 100 ± 50 r/min
(0.31 in)
6.5 mm (0.26 in)
(Above the datum point)
(M.J.)
(J.N.) NLCT-3rd
(S.J.)
(S.A.J)
1 and 1/2 turns back
Adjust to the specified idle speed.
2 – 4 mm
(0.08 – 0.16 in)
Approx. 3 mm (0.12 in)
STANDARD
3.210 (61/19)
4.000 (48/12)
2.153 (28/13)
1.764 (30/17)
1.470 (25/17)
1.238 (26/21)
1.090 (24/22)
0.10 – 0.30
(0.004 – 0.012)
5.00 – 5.10
(0.197 – 0.201)
4.80 – 4.90
(0.189 – 0.193)
DID 520 DMA2
112 links
—
35 – 45
(1.4 – 1.8)
5 – 10 (0.2 – 0.4)
SPECIFICATION
37 mm
10H0
8 mm
#162
#45
#100
#75
#40
SERVICING INFORMATION
Unit: mm (in) Except ratio
LIMIT
—
—
—
—
—
—
—
0.50
(0.020)
—
—
—
—
323.8
(12.75)
—
—
E-19, 28
←
←
10H1
←
←
←
#170
NLCT-4th
←
←
←
←
←
←
←
←
19-5