TOHATSU MFS 8B Service Manual page 40

Part name
Intake valve
Exhaust valve
Valve spring
Cam shaft
Rocker arm
and shaft
Timing belt
Engine block
Carburetor
Oil pump
2-14
Item
Valve clearance
Valve stem outer diameter
Valve guide inner diameter
Clearance between valve
guide and valve stem
Width of area contacting
with valve seat
Free length
Cam height (both IN and EX)
Journal outer diameter
Clearance with holder (journal)
Rocker arm inner diameter
Shaft outer diameter
Shaft clearance
Appearance
Compression pressure (Reference value)
Setting mark
Venturi bore
Throttle bore
Main jet (MJ)
Main air jet (MAJ)
Main nozzle bore (MN)
Slow jet (SJ)
Slow air jet (SAJ)
Throttle opening (at WOT)
Pilot screw (PS)
Fuel level
(from flange face to float bottom)
Choke solenoid conductivity
Idling speed
Trolling speed
Pump body bore
Clearance between outer rotor and body
Height of outer rotor
Side clearance between rotor and body
Clearance between outer and inner rotors
IN : Intake 0.13 – 0.17mm (0.0051 – 0.0067in)
EX : Exhaust 0.18 – 0.22mm (0.0071 – 0.0087in)
IN : Intake 5.48mm (0.2157in)
EX : Exhaust 5.46mm (0.2150in)
IN : Intake 5.51mm (0.2169in)
EX : Exhaust 5.51mm (0.2169in)
IN : Intake 0.008 – 0.040mm (0.00031 – 0.00157in)
EX : Exhaust 0.025 – 0.057mm (0.00098 – 0.00224in)
1.0mm (0.04in)
IN : Intake
EX : Exhaust 1.0mm (0.04in)
38.3mm (1.51in)
23.63mm (0.9303in)
Pulley side
Oil pump side
0.02-0.05mm (0.0008 – 0.0020in)
13.01mm (0.5122in)
12.99mm (0.5114in)
0.006 – 0.035mm (0.00024 – 0.00138in)
0.88MPa (9.0kg/cm
F8 B
MF/EF
3V1FB
12 (0.4724)
mm (in)
mm (in) #76
#150
mm (in) ø2.3 (0.091)
mm (in)
#39
#90
mm (in) 75°
2-3/4
mm (in)
—
r/min
r/min
Standard value
17.98mm (0.7079in)
15.97mm (0.6287in)
2 ) (128psi)/500r/min±10%
F9.8 B
EP MF/EF
3V1PB 3V2FB
17 (0.6693)
23 (0.9055)
#92
#135
ø2.6 (0.102)
#39
#70
75°
2
9.5 – 10.5 (0.374 – 0.1434)
Conductive —
950
900
—
—
—
—
—
EP
3V2PB
Conductive
4st 8/9.8 2016