2006 YAMAHA TTR50 Owners Manual

Page 57 of 390

YAMAHA TTR50 2006  Owners Manual 
SPEC
2 - 2
Oil capacity:
Engine oil Periodic oil change 0.8 L (0.70 Imp qt, 0.85 US qt)
Total amount 1.0 L (0.88 Imp qt, 1.06 US qt)
Air filter: Wet element
Fuel: Type Unleaded gasoline only (USA, AU

Page 58 of 390

YAMAHA TTR50 2006  Owners Manual 
SPEC
2 - 3
Suspension:
Front suspension Telescopic fork
Rear suspension Swingarm (monocross suspension)
Shock absorber:
Front shock absorber Coil spring
Rear shock absorber Coil spring/oil damper
Whe

Page 59 of 390

YAMAHA TTR50 2006  Owners Manual 
SPEC
2 - 4
MAINTENANCE SPECIFICATIONS
ENGINEItem Standard Limit
Cylinder head: Warp limit ---- 0.05 mm  (0.0020 in)
Cylinder: Bore size 35.995 ~ 36.015 mm (1.4171 ~ 1.4179 in)36.05 mm
(1.419 in)
Cams

Page 60 of 390

YAMAHA TTR50 2006  Owners Manual 
SPEC
2 - 5
Rocker arm/rocker arm shaft:
Shaft outside diameter 9.981 ~ 9.991 mm (0.3930 ~ 0.3933 in)9.976 mm
(0.3928 in)
Rocker arm inside diameter 10.000 ~ 10.015 mm (0.3937 ~ 0.3943 in)10.025 mm
(0

Page 61 of 390

YAMAHA TTR50 2006  Owners Manual 
SPEC
2 - 6
Stem runout limit ---- 0.01 mm
(0.0004 in)
Valve seat width IN 0.9 ~ 1.1 mm (0.0354 ~ 0.0433 in)1.6 mm
(0.0630 in)
EX 0.9 ~ 1.1 mm (0.0354 ~ 0.0433 in) 1.6 mm
(0.0630 in)
Valve spring: Fre

Page 62 of 390

YAMAHA TTR50 2006  Owners Manual 
SPEC
2 - 7
Piston:
Piston to cylinder clearance 0.030 ~ 0.040 mm (0.0012 ~ 0.0016 in)0.15 mm
(0.0059 in)
Piston size  “D ” 35.960 ~ 35.980 mm
(1.4157 ~ 1.4165 in) ----
Measuring point  “H ” 5

Page 63 of 390

YAMAHA TTR50 2006  Owners Manual 
SPEC
2 - 8
Oil ring
Dimensions (B  × T) 1.50  × 1.60 mm 
(0.059  × 0.063 in) ----
End gap (installed) 0.20 ~ 0.70 mm  (0.008 ~ 0.028 in)----
Crankshaft: Crank width “A” 42.95 ~ 43.00 mm (1.691

Page 64 of 390

YAMAHA TTR50 2006  Owners Manual 
SPEC
2 - 9
Carburetor:
I. D. mark 1P61 00 ----
Main jet (M.J) #62.5 ----
Main nozzle (N.J) E-2M ----
Main air jet (M.A.J) ø 1.4 ----
Jet needle (J.N) 4DL22-1 ----
Cutaway (C.A) 2.5 ----
Pilot outlet