RV125K4/K5 (’04, ’05-MODELS) 8-5
DRIVE TRAIN + DRIVE CHAIN
Unit: mm (Except ratio)
PAIR SYSTEM
CARBURETOR
ITEM STANDARD LIMIT
Primary reduction ratio 3.470 (59/17) —
Final reduction ratio 3.400 (51/15) —
Gear ratios Low 3.000 (33/11) —
2nd 1.857 (26/14) —
3rd 1.368 (26/19) —
4th 1.095 (23/21) —
5th 0.923 (24/26) —
Top 0.833 (20/24) —
Shift fork to groove clearance 0.10 – 0.30 0.50
Shift fork groove width No. 1 5.0 – 5.1 —
No. 2 5.5 – 5.6 —
Shift fork thickness No. 1 4.8 – 4.9 —
No. 2 5.3 – 5.4 —
Countershaft length
(Low to 2nd)
—
Drive chain Type DID 428 —
Links 132 —
20-pitch
length
—259.0
Drive chain slack 15 – 25 —
Gearshift lever height 20
(between footrest top and gearshift lever top)
—
ITEM STANDARD LIMIT
Negative pressure range –37.3 – –60.0 kPa (–280 – –450 mmHg) —
ITEM
SPECIFICATION
E-02, 19
Carburetor type MIKUNI BS26
Bore size 26 mm
I.D. No 13GA
Idle r/min 1 500 ± 100 r/min
Float height 17.1 ± 1.0 mm
Main jet (M.J.) # 115
Jet needle (J.N.) 4EJ44-2nd
Needle jet (N.J.) P-0M
Throttle valve (Th.V.) # 105
Pilot jet (P.J.) # 15
Pilot screw (P.S.) PRE-SET (2 turns out)
Throttle cable play 2.0 – 4.0 mm
88.0
+0.1
-0
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