Workshop Manual

8
STRATO CHARGED ENGINE GZ25N
4-2 Carburetor
4-3 Ignition System
4-5 Sealant and Lubricant Specifications
Carburetor WYA-1B
Metering Lever set. mm.(in.) 1.5 (0.059) ±0.16 (±0.006) Vanier
Inlet valve opening pressure. kg/cm
2
(p.s.i) 1.5 (21.3) ±0.5 (±7.1) Leak Tester
Inlet valve reseating pressure. kg/cm
2
(p.s.i) 0.9 (12.8) ±0.5 (±7.1) Leak Tester
Remarks
Maintenance Item
Standards
Limit
Measuring
instrument
4-4 Fastening Specifications
Electric parts
Spark plug air gap. mm.(in.)
0.6 0.7
0.7 (0.028) Vanier
(0.025 0.028)
Ignition coil air gap. mm.(in.) 0.3 (0.012) 0.4 (0.016) Air gap gauge
Ibnition coil resistance
Primary side Ohm
2300 Volt Meter
Reading between primary terminal
and iron core.
Secondary side Ohm 1100 Volt Meter
Reading between high tension
terminal and iron core.
Remarks
Maintenance Item
Standards
Limit
Measuring
instrument
AREA MATERIAL TO BE APPLIED
Recoil spring Grease
Reel center hub Grease
Recoil Starter:
AREA MATERIAL TO BE APPLIED
Sliding portion
Grease
of screw.
Clutch:
AREA MATERIAL TO BE APPLIED
Oil seal lip Grease
Piston sliding area 2-cycle oil
Main bearing 2-cycle oil
Piston pin bearing 2-cycle oil
Crank pin bearing 2-cycle oil
Engine Block:
4. MAINTENANCE SPECIFICATIONS
Standard fix torque
Carburetor Fix Bol M5 (P=0.8) 38(33) 30(26) 45(39)
Insulator Fix Bolt M5 (P=0.8) 45(39) 40(35) 55(48)
Clutch M5 (P=1.0) 65(56) 50(43) 80(69)
Rotor Fix Nut M8 (P=1.0) 130(112) 100(87) 150(130)
Cylinder Fix Bolt M5 (P=0.8) 70(61) 60(52) 80(69)
Crankcase Fix Bolt M5 (P=0.8) 65(56) 50(43) 80(69)
Grass Guard Fix Bolt M5 (P=0.8) 38(33) 30(26) 45(39)
Spark Plug M10 (P=1.0) 110(96) 100(87) 120(104)
Muffler Fix Bolt M5 (P=0.8) 90(78) 70(61) 100(87)
Engine Cover Fix Bolt M5 (P=0.8) 38(33) 30(26) 45(39)
Fan Cover Fix Bolt M5 (P=0.8) 38(33) 30(26) 45(39)
Ignition Coil Fix Bol M4 (P=0.7) 33(29) 25(22) 40(35)
Recoil Starter Fix Bolt M5 (P=0.8) 38(33) 30(26) 45(39)
Recoil Pulley M8 (P=1.25) 90(78) 80(69) 100(87)
Fuel Tank Fix Bolt M5 (P=0.8) 38(33) 30(26) 45(39)
Common fixing torque
Tapping Screw TP4.3 10 (9) 7(6) 15(13)
TP5.4 25(22) 20(17) 30(26)
Screw Lock Agent
Fixing Components
Screw Size
Fixing torque
Target Tolerance
Unit : kg . cm(in.lbs)