2004 YAMAHA TT600RE fuel

ENGENGINE DISASSEMBLY
5-5
ENGINE DISASSEMBLY
CYLINDER HEAD, CYLINDER, CAMSHAFT
AND PISTON
NOTE:
The cylinder head, cylinder, camshaft and piston
can be examined with the engine installed by
removing the following parts.
•Seat
•Fuel tank
•Rear cowling
•Carburetor
•Exhaust pipe
1. Remove:
•Spark plug (1)
•Tappet cover (2) (intake)
•Tappet covers (3) (exhaust)
•Cylinder head cover (4)
•Cap (5)
•Pins (6)
2. Loosen:
•Bolt (1) (chain tensioner)
3. Remove:
•Chain tensioner (2)
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ENGINE DISASSEMBLY
5-18
ENG
ROCKER ARMS
NOTE:
The rocker arms may be examined with the
engine installed by removing the following parts.
•Seat
•Fuel tank
•Cylinder head cover
1. Remove:
•Cap (1)
2. Remove:
•Bolts (1) (rocker shaft)
3. Remove:
•Rocker shaft
•Rocker arms
NOTE:
Remove the rocker shaft using sliding hammer (1)
and weight (2).
Sliding hammer bolt: P/N. 90890-01083
Weight: P/N. 90890-01084
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ENGENGINE DISASSEMBLY
5-19
VALVES
NOTE:
The valves may be inspected with the engine
installed by removing the following parts.
•Seat
•Fuel tank
•Exhaust pipe
•Carburetor
•Cylinder head cover
•Cylinder head
1. Check:
•Valve seal
Leakage from valve seats’ Inspect the
valve surface, the seat and seat width.
See section “VALVE SEAT INSPECTION
AND REPAIR”.
NOTE:
Check the valve seal before assembling the inter-
nal parts of the cylinder head (valves, valve
springs, spring retainer etc).
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Inspection steps:
•Pour clean solvent (1) into the intake and
exhaust ports.
•Check the valve seal. There must be no blow-
bys from the valve seats (2).
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ENGINE REASSEMBLY
5-78
ENG
9. Install:
•Carburetor Screw (clamp): 2 Nm (0.2 mkg)
Screw (seat): 10 Nm (1.0 mkg)
See section “CARBURETOR-INSTALLA-
TION” in CHAPTER 6.
10. Adjust:
•Throttle cable free play
Free play: 3 ~ 5 mm
Engine idle speed:1.150 ~ 1.450 rpm
See section “THROTTLE CABLE FREE
PLAY ADJUSTMENT” in CHAPTER 3.
11. Install:
•Fuel tank
Do not start the engine until it is filled with oil.
CAUTION:
12. Fill with:
•Engine oil Amount of oil (total): 3.0 litres
13. Check:
•Engine idle speed
See section “IDLE SPEED ADJUST-
MENT” in CHAPTER 3.
14. Install:
•Seat
See section “ENGINE OIL REPLACE-
MENT” in CHAPTER 3.
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CARB
CHAPTER 6
CARBURETOR
CARBURETOR REMOVAL ................................................................................................ 6-1
TECHNICAL SPECIFICATIONS/TIGHTENING TORQUES/EXPLODED VIEW .............. 6-3
SECTION VIEW .......................................................................................................... 6-5
CARBURETOR DISASSEMBLY ........................................................................................ 6-6
CARBURETOR INSPECTION .......................................................................................... 6-9
CARBURETOR ASSEMBLY .............................................................................................. 6-11
FUEL LEVEL ADJUSTMENT (CARBURETOR INSTALLED) .......................................... 6-16
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CARBCARBURETOR REMOVAL
6-1
CARBURETOR
CARBURETOR REMOVAL
Order Job name/Part name Q.ty Remarks Carburetor removal Remove the parts in order.
Seat Refer to “SEAT, FUEL TANK AND REAR
COWLING" section in CHAPTER 3.
Fuel pipe NOTE:
Fuel tank Be sure the cap is properly tightened and the fuel cock is in the “OFF” position before
removing the fuel tank.
1 Lock nut 4 Loosen.
2 Throttle cable adjuster 2 Screw.
3 Throttle cable 2
4 Hose clamp 2 Loosen.
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CARBURETOR
6-4
CARB
(1) Carburetor assembly
(2) Cover gasket
(3) Gasket, nozzle
(4) Float
(5) Float pin
(6) Float chamber gasket
(7) Screw
(8) Float chamber fastening screw
(9) Spring washer
(10) Collar
(11) Screw
(12) Gasket (13) Throttle valve
spring
(14) Spring washer
(15) Nut
(16) Gasket
(17) Screw
(18) Stop screw
(19) Nut
(20) Screw
(21) Hose
(22) Diaphragm
(23) Cover
(24) Bracket
(25) O-ring
(26) Spring washer (27) Spring
(28) Drain valve
(29) Pipe
(30) Pipe
(31) Screw
(32) Screw
(33) Pipe
(34) Clip
(35) Main jet 1
(36) Main nozzle 1
(37) Throttle valve
(38) Pilot jet
(39) Main jet 2
(40) Main nozzle 2
(41) Pilot screw set (42) Needle valve set
(43) Stop screw set
(44) Throttle screw set
(45) Diaphragm
(46) Needle set 1
(47) Needle set 2
(48) Starter set
(49) Way 3
(50) Hose
(51) Hose
(52) Hose
(53) Clip
(54) Breather pipe
(55) O-ring
(56) Pipe
SPECIFICATIONS
Main jet #150 FIRST #145 SEC.
Starter jet #74
Needle jet 5C5A-3/5 ( FIRST) 5Y18-3/5 (SEC.)
Main nozzle ø 2,6
Pilot jet #50
Pilot air screw 2,75 ± 0,5 revs approx.,
open
Float height 27~29 mm
Fuel level 6~8 mm
Engine idle speed 1.150~1.450 r/min
Throttle valve seat ø 2,5 mm
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CARBCARBURETOR
6-5
SECTION VIEW
(1) Needle jet (primary)
(2) Valve seat
(3) Needle valve
(4) Main nozzle (primary)
(5) Main jet (primary)
(6) Pilot air screw
(7) Needle jet (secondary)
(8) Main nozzle (secondary)
(9) Main jet (secondary)
[A] Primary carburetor
[B] Secondary carburetor Air
Fuel
Mixture
AB
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